if atoms are neutral (have no overall charge), what can you infer about the number of protons and electrons in an atom? How should these numbers compare? explain your thinking

Answers

Answer 1

If atoms are neutral, that means that the number of protons and electrons in an atom are equal.

What is an atom?

One or more electrons are attached to the nucleus of every atom, which is made up of a nucleus. Protons and neutrons, in various numbers, make up the nucleus. Neutrons exist only in the most prevalent type of hydrogen.

Atoms that are neutral or ionized are the building blocks of all solids, liquids, gases, and plasma. A normal atom is 100 picometers across, which is incredibly small. Because of quantum effects, they are so small that it is impossible to predict their behavior with sufficient precision using classical physics, as if they were, say, tennis balls.

An atom's nucleus makes up more than 99.94% of its mass. The electric charge of the protons is positive, the charge of the electrons is negative, and there is no electric charge on the neutrons.

If atoms are neutral, that means that the number of protons and electrons in an atom are equal. This is because protons carry a positive charge, while electrons carry a negative charge. In order for an atom to be neutral, the number of protons and electrons must be the same, so that the positive and negative charges balance out. Therefore, the number of protons and electrons in an atom should be the same, and the atom is neutral.

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Related Questions

Determine the freezing point depression of a solution that contains 2 moles of NaCl in 200 g of water. ( Kf = 1.86°C/m and Kb = 0.512°C/m.)

Answers

The freezing point depression of a solution that contains 2 moles of NaCl in 200 g of water (Kf = 1.86 °C/m) is 18.6 °C.

What is the freezing point depression?

It is a decrease in the freezing point of a solution, in comparison with the pure solvent.

Step 1. Determine the molality of the solution.

The solution contains 2 moles of NaCl in 200 g of water.

b = moles NaCl / Kg water = 2 mol/0.200 kg = 10 m

Step 2. Calculate the freezing point depression.

Given the cryoscopic constant (Kf) is 1.86 °C/m for water, the freezing point depression (ΔT) is:

ΔT = Kf × b = 1.86 °C/m × 10 m = 18.6 °C

The freezing point depression of a solution that contains 2 moles of NaCl in 200 g of water (Kf = 1.86 °C/m) is 18.6 °C.

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Predict the products of the double replacement reactions given. Check to see that the equations are
balanced.
AgNO3 + NaCl → ?
O AgNa+CINO3
NaNO3 + AgCl (s)
O 2NaNO3 + 3AgCl (s)
O Ag + NaNO3

Answers

Answer:

Option (2)

Explanation:

The two compounds formed will be AgCl and NaNO₃.

We can see that this will result in a balanced equation, so the answer is Option (2).

Answer:

B) NaNO3 + AgCl (s)

Explanation:

edge 2023

How many grams of Aspirin (acetylsalicylic acid) should we form in this reaction if we started with 2.08g of Salicyclic Acid?

Answers

Taking into account the reaction stoichiometry, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

Reaction stoichiometry

In first place, the balanced reaction is:

C₄H₆O₃ + C₇H₆O₃ (Salicyclic Acid) →C₉H₈O₄ (aspirin) + C₂H₄O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

C₄H₆O₃: 1 moleC₇H₆O₃: 1 moleC₉H₈O₄: 1 moleC₂H₄O₂: 1 mole

The molar mass of the compounds is:

C₄H₆O₃: 102 g/moleC₇H₆O₃: 138 g/moleC₉H₈O₄: 180 g/moleC₂H₄O₂: 60 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

C₄H₆O₃: 1 mole ×102 g/mole= 102 gramsC₇H₆O₃: 1 mole ×138 g/mole= 138 gramsC₉H₈O₄: 1 mole ×180 g/mole= 180 gramsC₂H₄O₂: 1  mole ×60 g/mole= 60 grams

Mass of aspirin formed

The following rule of three can be applied: if by reaction stoichiometry 138 grams of salicyclic acid form 180 grams of aspirin, 2.08 grams of salicyclic acid form how much mass of aspirin?

[tex]mass of aspirin=\frac{2.08 grams of salicyclic acidx 180 grams of aspirin}{138 grams of salicyclic acid}[/tex]

mass of aspirin= 2.713 grams

Then, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

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What color does red cabbage juice make when mixed with a citrus cleaner?

Answers

Answer: PINK

Explanation:

It makes the color pink

What happens when food first touches your tongue?

Answers

Answer:

you will taste the flavour of the food

What is the generic name of this molecule? (Ph stands for phenyl)

Answers

The proper name of the compound is now 1,1 - dihydroxy-3-phenyl propene.

What is the name of the compound?

Firstly we know that the parent chain is based on propane. Now we have three substituents on that parent chain. Two hydroxy moieties and one phenyl moiety.

The proper name of the compound is now 1,1 - dihydroxy-3-phenyl propene.

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Where are these chemical reactions happening?

Answers

Answer:

At Anode: oxidation occurs i.e loss of electrons

At cathode: reduction occurs i.e gain of electrons

OPTION 1 is the correct answer

CH3CH2OH and CH3CHO
Which is more acidic?? ​

Answers

Answer:

CH3CH2OH

Explanation:

CH3CH2OH the ethanol is regarded as neutral since pH is very close to 7 and CH3CHO or acetaldehyde is an extremely weak basic max pH of 8.

(04.03 LC)
Which of the following is a single replacement reaction?
Ba(OH)2 + H₂SO4 → BaSO4 + 2H₂O
O2Mg + O₂2MgO
O H₂O+ CO2 → H₂CO3
O Zn + H₂SO4 → ZnSO4 + H₂

Answers

Answer:

D.) Zn + H₂SO₄ ----> ZnSO₄ + H₂

Explanation:

Single-Replacement Reaction: a reaction in which an element in a compound is swapped with another element

    ex.) Zn + H₂SO₄ ----> ZnSO₄ + H₂

Double-Replacement Reaction: a reaction in which a cation in one compound is swapped with a cation in another

    ex.) Ba(OH)₂ + H₂SO₄ ----> BaSO₄ + 2 H₂O

Synthesis Reaction: a reaction in which two or more elements/compounds combine to form a new molecule

    ex.) 2 Mg + O₂ ----> 2 MgO

    ex.) H₂O + CO₂ ----> H₂CO₃

Calculate the percent yield of a reaction that produced 0.350 mol HCI if the theoretical yield was 15.36 g

Answers

The percent yield of the reaction that produced 0.350 mol HCI is 83.17%

How to determine the actual yield (in grams)Mole of HCl = 0.350 moleMolar mass of HCl = 36.5 g/molActual yield =?

Actual yield = 0.35 × 36.5

Actual yield = 12.775 g

How to determine the percentage yield Actual yield of HCl = 12.775 gTheoretical yield of HCl = 15.36 gPercentage yield =?

Percentage yield = (Actual / Theoretical) × 100

Percentage yield = (12.775 / 15.36) ×100

Percentage yield = 83.17%

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Hydrogen peroxide is oxidized with permanganate solution to produce oxygen gas by the following reaction:

2H + H2O2 + 2MnO4 -> 2MnO2 + 4H2O + 3O2

In the lab a student mixed 30.0 mL of 0.30 M hydrogen peroxide solution with 30.0 mL of 0.30 M potassium permanganate solution. The oxygen that was produced was collected by water displacement at 298 K and 1.00 atm of pressure. The volume of oxygen collected was 178 mL. (Ignore the effect of water vapor in the collection tube here.)

a.) What is the limiting reactant?

b.) What is the theoretical yield of oxygen gas, in milliliters?

c.) What is the percent yield of oxygen gas?

Answers

The percentage yield of the oxygen gas is 60%.

What is the limiting reactant?

The reaction equation is;

2H^+ + H2O2 + 2MnO4 -> 2MnO2 + 4H2O + 3O2

Number of moles of hydrogen peroxide = 30/1000 * 0.30 M = 9 * 10^-3 moles

Number of moles of  potassium permanganate = 30/1000 * 0.30 M = 9 * 10^-3 moles

Now;

1 mole of H2O2 reacts with 2 moles of permanganate

 9 * 10^-3 moles of H2O2 reacts with  9 * 10^-3 moles * 2 moles/1 mole  

= 1.8 * 10^-2 moles

Hence, permanganate is the limiting reactant

b) The theoretical yield of oxygen is;

2 moles of oxygen produced 3 moles of O2

9 * 10^-3 moles oxygen  produced 9 * 10^-3 moles *  3 moles/2 moles

= 0.0135 moles

If 1 mole of O2 occupies 22.4 L

0.0135 moles of O2 occupies 0.0135 moles * 22.4 L/ 1 mole

= 0.302 L or 302 mL

c) Percentage yield of oxygen = 178 mL/ 302 mL * 100/1

= 60%

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How many moles of Chromium is in 4.41 ×10^24 atoms

Answers

7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms.

How to find the number of moles ?

Number of moles = [tex]\frac{\text{Given number of atoms}}{\text{Avogadro's Number}}[/tex]

     

What is Avogadro's Number ?

Avogadro's number is the number of particles in one mole of substance. 6.022 × 10²³ is known as Avogadro's Constant / Avogadro's Number.

Avogadro's Number = 6.022 × 10²³

Now put the values in above formula we get

Number of moles = [tex]\frac{\text{Given number of atoms}}{\text{Avogadro's Number}}[/tex]

                             = [tex]\frac{4.41 \times 10^{24}}{6.022 \times 10^{23}}[/tex]

                             = 7.32 moles

Thus from the above conclusion we can say that 7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms.

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can someone please fill this out for me

Answers

Filling out the table of elements below following the outlined order:

Calcium - symbol = Ca; Group =2; Period = 4; Ar = 134; Am =40.078u; Ph = solid; Density = 1.55; Bp = 1757K; Mp = 1115K.Vanadium - symbol = V; Group =5; Period = 4; Ar = 197; Am =50.9415u; Ph = solid; Density = 6.11; Bp = 3680K; Mp = 2183K.Manganese - symbol = Mn; Group =7; Period = 4; Ar = 127; Am = 54.938044u; Ph = solid; Density = 7.21; Bp = 2334K; Mp = 1519K.Cobalt: - symbol = Co; Group =9; Period = 4; Ar = 125; Am =58.933195 u; Ph = solid; Density = 8.90; Bp = 3200K; Mp = 1768K.Zinc: - symbol = Zn; Group = 12; Period = 4; Ar = 134; Am =65.38 u; Ph = solid; Density = 7.14; Bp = 1180K; Mp = 692.68K.Arsenic: - symbol = As; Group = 15; Period = 4; Ar = 197; Am = 74.9216 u; Ph = solid; Density = 5.75; Bp = 889K; Mp = 889K.Bromine: - symbol = Br; Group =17; Period = 4; Ar = 120; Am = 79.904 u; Ph = Liquid; Density = 3.1028; Bp = 332K; Mp = 265K.

Meaning of Element

An element can be defined as a substance that can not be broken down into simpler substances.

An element serves as a building blocks for compounds and mixtures.

In conclusion, each element and its property as requested in the table are given above.

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If a sample of helium gas at 880 torr and 23°C is allowed to expand from 2.4 L to 5.6 L without changing the temperature, what pressure will the helium gas exert?
275 torr
962 torr
2.01 x 103 torr
377 torr

Answers

Answer: 962 torr

Explanation:

State which substance is undergoing oxidation and which substance is undergoing reduction in the following reaction:

2 K (s) + CuCl2 (aq) ---> 2 KCl (aq) + Cu (s)

Answers

Answer:

Oxidation - K

Reduction - Cu

Explanation:

2K --> 2K^+

Cu^+2 --> Cu

Which substance is not a solid at 20˚C and one atmosphere of pressure?
A. Kr
B. U
C. K
D. Ag

Answers

Choose A, Kr is noble gas

The buffer is prepared by adding 250mL of 0.80M NH3 to 150mL of 0.50M NH4NO3. What is the pH of the final solution (Kb for NH3 = 1.8 x 10^-5)

Answers

The pH of the solution is obtained to be 9.67.

What is a buffer?

A buffer is a solution that serves to militate against changes in acidity or alkalinity. The buffer is often made of a solution of a strong acid and its salt or a weak base and its salt.

Now we have the that;

Number of moles of base = 250 /1000 *  0.80 = 0.2 moles

Number of moles of salt = 150/1000 *  0.50 = 0.075 moles

Total volume of the solution = 250 + 150 = 400 mL or 0.4 L

Molarity of the base = 0.2 moles/0.4 L = 0.5 M

Molarity of the salt =  0.075 moles/ 0.4 L = 0.1875 M

pKb = - log( 1.8 x 10^-5) = 4.74

pOH = pKb + log [salt/base]

pOH =  4.74 + log (0.1875/ 0.5)

pOH = 4.33

pH = 14 - 4.33

pH = 9.67

The pH of the solution is obtained to be 9.67.

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Question 5
Now, provide the following information about your chosen molecule: Percent composition of each element

Answers

The molecule is water. Molecular formula of water is H₂O. Molecular weight of water is 18 g. The percentage composition of hydrogen and oxygen in water is 11.11 % and 88.89 %. Intermolecular force in water is dipole-induced dipole and London dispersion.

Which molecule is Vital to human body ?

Name of the molecule is Water. Molecular formula of the compound is H₂O.

What is the Molecular mass of water ?

Molecular mass of H₂O = 2 × Atomic weight of H + Atomic weight of O

                                       = 2 × 1 + 16

                                       = 2 + 16

                                       = 18

The water molecule is Covalent because hydrogen atoms share electrons with the oxygen atom.

How to find the percentage composition ?

Percentage composition = [tex]\frac{\text{Mass of element}}{\text{Molar Mass}}[/tex]

Now,

Molar mass of Water = 18

Percentage composition of hydrogen = [tex]\frac{2}{18} \times 100[/tex]

                                                               = 11.11 %

Percentage composition of Oxygen = [tex]\frac{16}{18} \times 100[/tex]

                                                            = 88.89 %

In water molecule dipole-induced dipole and London dispersion forces are present because water has H-bonds.

The given molecule is water. Water is important for human body to keep a normal temperature. It carries nutrients. It protects our body organs and tissues. The function of water is to serves a s a lubricant. It helps to prevent constipation. It makes up Saliva.

Thus from the above conclusion we can say that The molecule is water. Molecular formula of water is H₂O. Molecular weight of water is 18 g. The percentage composition of hydrogen and oxygen in water is 11.11 % and 88.89 %. Intermolecular force in water is dipole-induced dipole and London dispersion.

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Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Questions: Choose one molecule that is vital to the human body. Provide the following information: Name of the molecule

Now, provide the following information: Molecular formula

Now, provide the following information about your chosen molecule: Molecular mass

Now, provide the following information about your chosen molecule: The type of molecule (covalent or ionic)

Now, provide the following information about your chosen molecule: Percent composition of each element

Now, provide the following information about your chosen molecule: Intermolecular forces within the molecular

Now, provide the following information about your chosen molecule: Describe why the molecule is important and its function within the human body.

Which part of thr drug discovery life cycle can quantum computung impact the most

Answers

Molecular simulation is the part of the drug discovery life cycle that most likely uses quantum computing.

What is drug discovery?

Drug discovery refers to the process to identify and validate medications in pharmaceutical research.

Drug discovery exploits computational approaches based on quantum modeling to accelerate this process.

In conclusion, molecular simulation is the part of drug discovery associated with quantum computing.

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Put the following energy sublevels in order from least to greatest energy.
A. 1s, 2s, 3s, 4s, 2p, 3p, 4p, 3d, 4d, 4f
B. 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f
C. 1s, 2s, 2p, 3s, 3p, 3d, 4s, 4p, 4d, 4f
D. None of these

Answers

The correct order is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f. The correct option is B.

Order of energy sublevels

The correct order of energy sublevel is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p.

Thus, with the exclusion of 5s, 5p, 6s, 5d, 6p, 7s, 5f, 6d, and 7p, what we have left in order of increasing energy is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f.

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The correct order from least to greatest energy for the energy sublevels is;  1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f (Option B).

What is the Aufbau principle?

The Aufbau principle offers a method in which the energy levels in an atoms are arranged from the least to the greatest. We know that electrons are filled into orbitals in order of increasing energy.

Thus, the correct order from least to greatest energy for the energy sublevels is;  1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f (Option B).

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Perform the following operation
and express the answer in
scientific notation.
6.0×103-2.3×103
[?]x10[?]

Answers

Answer:

6.0 x 10³ - 2.3 x 10³ = 3700

3700 ---------> 3.7 x 10³

A rock displaces 1.65 L of water. The volume of the rock is:

Answers

Answer:

If a rock displaces 1.65L of water, its volume must be 1.65L.
If you want to convert that to cm^3 it's 1000 cm^3 per liter...so 1650 cm^3

Explanation:

The concentration of an HCl acid solution is initially 6mol/L. What would the concentration of a new solution be if 200 mL of the original HCl solution is diluted with 1L of water.

Answers

Taking into account the definition of dilution, the concentration of the new solution is 1 mol/L.

Dilution

When it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.

Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volume

Final volume

In this case, you know:

Ci= 6 mol/LVi= 200 mLCf= ?Vf= 1 L (1000 mL) water + 200 mL of HCL= 1200 mL

Replacing in the definition of dilution:

6 mol/L× 200 mL= Cf× 1200 mL

Solving:

(6 mol/L× 200 mL)÷ 1200 mL= Cf

1 mol/L= Cf

In summary, the concentration of the new solution is 1 mol/L.

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What does a change in the entropy of a system indicate?
A.
That the disorder of the system has changed

B.
That the equilibrium position has changed

C.
That the energy of the system has changed

D.
That the activation energy has changed

Answers

A change in the entropy of a system indicate that the disorder of the system has changed. Option A

What is a change in entropy?

A change in entropy indicates is a measure of the disorder, or randomness, in a system.

An increased value of entropy means more disorder, and a decreased value of entropy means less disorder.

These changes in entropy occur spontaneously

Thus, a change in the entropy of a system indicate that the disorder of the system has changed. Option A

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It takes 50.0 J to raise the temperature of an 10.6 g piece of unknown metal from 13.0°C to 24.9 °C.
What is the specific heat for the metal?
Express your answer with the appropriate units.

Answers

Answer:

0.396 J/g°C (to 3 sf)

Explanation:

50.0 = 10.6(24.9-13.0)(c)

c = 0.396 J/g°C (to 3 sf)

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What makes yogurt a colloid? What kind of a colloid is yogurt?

Answers

Answer:

Explanation:

yogurt is a colloid because of the milk/dairy in it. yogurt is a complex colloid.

As yogurt includes living bacterial cultures, proteins, lipids, and milk solids in addition to water, yoghurt is a colloid.

Yoghurt is a colloid because it contains living bacterial cultures, proteins, lipids, and milk solids in addition to water. A colloid forms a homogenous mixture rather than settling or separating over time because the particles or components are uniformly distributed throughout the medium. A water-in-oil emulsion, specifically yoghurt is regarded as an emulsion colloid. This implies that water droplets are evenly distributed across an ongoing fat or oil matrix. The matrix of yoghurt is made up of milk solids, proteins, and lipids, and the water phase is present as droplets. Lactic acid is produced when bacteria in the bacterial culture, including Lactobacillus bulgaricus and Streptococcus thermophilus, ferment milk's lactose.

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What color does red cabbage juice make when mixed with a citrus cleaner?
What color does red cabbage juice make when mixed with a dishwasher soap?
(WILL MARK BRAINLIEST!!!)

Answers

Answer:

Explanation:

green

I need to know the number of each atom

Answers

The answer is 7 Carbons, 12 Hydrogens, 2 Oxygens and 1 Barium

Given the reaction below, how many liters of oxygen are formed if 77.37 L of water are produced at STP? (4pts)

2C4H10 (g) + 13O2 (g) → 8CO2 (g) + 10H2O (g)

Round your answer to two decimal places.

Answers

1.2 x 10² L of oxygen is formed if 77.37 L of water is produced.

The density of water at STP = 0.99 g/ ml but we will assume 1 g/ml

Determine the mass of water ([tex]H_{2}[/tex]o) = 77.37 L × [tex]\frac{1000 ml}{1l}[/tex] × [tex]\frac{1g}{ml}[/tex]

The mass of water = 77370 g

Convert mass into moles = 77370 [tex]H_{2}[/tex]o × [tex]\frac{1mol}{18.01528} H _{2}O[/tex]

= 4294.6876 mol of [tex]H_{2} O[/tex]

Use stoichiometry to find how many mols of oxygen [tex]o_{2}[/tex] were used:

= 4294.6876 mol of [tex]H_{2} O[/tex] × [tex]\frac{13 mol }{10 mol}[/tex]

= 5583.0939 mol [tex]o_{2}[/tex]

Convert mols to mass = 5583.0939 mol ×[tex]\frac{32 g}{mol }[/tex]

= 178659.0059 g [tex]o_{2}[/tex]

Convert mass into liters

The density of [tex]o_{2}[/tex] at STP = [tex]\frac{1.439}{ml}[/tex]

Density of [tex]o_{2}[/tex] = 1.2 × [tex]10^{2}[/tex]

Hence,1.2 x 10² L of oxygen is formed if 77.37 L of water is produced.

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1.2 x 10² L of oxygen is formed  if 77.37 L of water are produced at STP. The term is derived from the Greek word "oxy genes," which means "forms acid." a periodic table column that is vertical.

What is oxygen ?

The chemical element oxygen has an atomic number of 8. At normal temperatures and pressures, oxygen transforms into the chemical compound (O2) of two atoms, which is a colorless gas.

The density of H₂O at STP = 0.99 g ÷ ml, but we will assume 1 g/ml

The mass of  H₂O = 77370 g

Use stoichiometry to find  moles of oxygen given by

= 4294.6876 mol of X

= 5583.0939 mol

Convert moles into mass = 5583.0939 mol X

= 178659.0059 g

Then convert it into liter. 1.2 x 10² L of oxygen is formed  if 77.37 L of water.

Thus, 1.2 x 10² L of oxygen is formed  if 77.37 L of water are produced at STP.

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an analyst prepared a sucrose solution by weighing 1kg of water and add 1.5kg sucrose. estimate the concentration of the resultant solution in degree brix

Answers

The concentration of the solution is 60 degrees Brix.

What is degree Brix?

Degrees Brix is the sugar content of an aqueous solution. One degree Brix is 1 gram of sucrose in 100 grams of solution and represents the strength of the solution a as percentage by mass.

Mass percent refers to the percentage of solute present in the solution.

The concentration of the substance can be expressed in mass percent.

we have to first calculate mass percent.

So, we can write,

Mass percent = mass of solute / mass of solution x 100.

Mass of solution = mass of solute + solvent.

Here, sucrose is the solute and the water is the solvent.

The mass of the solute is 1.5Kg and the mass of the solvent is 1Kg.

Mass of solution = 1.5 + 1 = 2.5 Kg.

Mass percent = 1.5/2.5x100

Mass percent is 60%.

Here, 1% = 1 degree brix.

So here, 60% = 60 degree brix.

Hence, the concentration of the solution is 60 degree brix.

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how much entropy (in j/k) is created as 3 kg of liquid water at 100 oc is converted into steam? rank the following elements in order of increasing ionization energy for cs be k Factor the following expression completely: 3x}(3x - 4)2 + x^(8)(3x - 4)(3). O 8x?(3x - 4)(6x - 12) O 24x}(3 x - 4)(11x - 12) O 3x3(3x - 4)(11x - 4) Ox}(3x 4)(11x - 4) O 3x3 (3x - 4)(3x + 4) Construct the indicated confidence interval for the population mean using the t-distribution. Assume the population is normally distributed.c=0.90,x=13.1,s=4.0,n=5 Comparing the hiring processes used at Goldman Sachs before and after the changes implemented under Dane Holmes, which process better met the standards of distributive justice? Why? (a) what is the width of a single slit that produces its first minimum at 60.0 for 620 nm light? Assume the following process is used in production of a product. There are 6 workers in this process; each task is done by 1 worker. Assume the process works at full capacity, utilization (%) of the worker performing task D is:Task A: 6min/unitTask B: 5min/unitTask C: 4min/unitTask D: 3min/unitTask E: 2min/unitTask F: 1 min/unit Select one:83.335016.66None of the provided answers58.3310033.3366.6628.57 fraternization refers mainly to______________ Currently, the market projects that HG Inc will have earnings and dividends in the coming year given by EPS1 = $3.00 Div1 = $1.50 Given these projections, the expected return on equity for HG Inc is rE= 7.5% and price per share P0 = $46.15. You advise HG inc to cut its dividend to Div1=$1.00. Assuming the expected return on equity rE and the return on investment rROI remain unchanged under this new policy, the new price per share for HG stock is closest toa. $54.55b. $30.77c. $75.25d. $81.82 Lucky Company borrowed $1,000,000 on December 31, 2017, by issuing $1,000,000, 8% mortgage note payable. The terms call for annual installment payments of $150,000 on December 31. Prepare the journal entries to record the mortgage loan and the first two installment payments. You have a gun that fires teflon bullets, which exit the gun with a negative charge. If you fire the gun to the west, parallel to the ground, and while on the surface of the earth, which way is the bullet pushed by the Earths magnetic field? Up Left Down Right No force Draw lewis structures for the reaction of Ph3P and S8 and assign oxidation numbers to phosphorus and sulfur atoms. what kind of reaction takes place here? The weather is a common conversation for many people each day. The weather can change day-to-day or even from hour-to-hour. On the other hand, the climate in an area usually takes a long time tochange. It is the average temperature and conditions in a specific place over a long period of time, inyears. Climate does not change day-to-day or even month-to-month, but usually takes hundreds,thousands, or millions of years to change. The Earth is about 4. 5 billion years old, and during its life, the climate has changed quite oftenand has experienced an Ice Age, warming, and everything in between. All scientists agree that theclimate changed often during the first 4. 5 billion yoprs. However, it is also a proven fact that the Earth'saverage temperature has increased about 1. 33F over the past 100 years between the 1900s and 2000s. Reviewing the past 200 years it has increased about 1. 8F. It may not sound like a big change, but itwill influence the Earth. The Earth is covered like a greenhouse, which is a "glass-covered' building that absorbs the heatfrom the Sun. Of course, the Earth is not covered with glass, but the greenhouse effect refers to theretention of the Sun's warmth in the Earth's lower atmosphere by greenhouse gases, including mostlycarbon dioxide, methane, and nitrous oxide. They act as a blanket for the Earth, helping to keep theEarth warm enough to support life, an average of about 59F. An increase in the greenhouse gasescauses the Earth to become warmer. O heats from the sunaOglass-covered' buildingsO greenhouse gasesO greenhouse Return on investment (ROI) is often expressed as follows:Income / investment = Income / Revenues Revenues / InvestmentRequirement 1. What advantages are there in the breakdown of the computation into two separate components? Select from the options below. (Complete all input fields.)a. The importance of investment turnover as a key to income is stressed.b. The importance of revenues is explicitly recognized.c. The important components are expressed as ratios or percentages instead of dollar figures.d. The breakdown stresses the possibility of trading off investment turnover for income as a percentage of revenues. Five years ago, William bought a twelve-room apartment complex for $340,000, and he plans to sell it today. The real estate market caused Williams complex to increase in value by 1. 8% every year. William charges $525 per month to rent a room, and pays $36,500 in building upkeep every year. If William has kept all of his apartments continually rented out since he bought the building, to the nearest hundred dollars, how much profit will he realize once he sells it? a. $195,500 b. $227,200 c. $226,100 d. $245,500 Please select the best answer from the choices provided A B C D. A building column transfers a concentrated load of 225 kips to the soil in contact with the footing. Estimate the increase in vertical pressure caused by the footing at a depth 10 ft and 15 ft at the following locations: vertically below column, and at a radial distance of 10 and 20 ft from the center of the column.a) at a depth of 10 feet as function of the distance from the center line of the column.b) at a depth of 15 feet as function of the distance from the center line of the column.c) Sketch the stress distribution at both depths on a single diagram so that you can see how the stress changes with depth and distance.d) Comment on the answers obtained in parts a) through c) A patient is to receive 2.4 fluid ounces of morphine over a 24 hour period. To what number of drops per hour should you set the syringe pump if each drop contains 200.0 microliters? Simple numerical computations help to establish the expected size of device variables. An ideal n-channel MOSFET maintained at T = 300 K is characterized by the following parameters:W= 50m,L= 5m,xo= 0.05m (oxide layer thickness),NA = 1015/cmandn= 800 cm2/V-sec (assumed independent ofVG ). Determine: (a) V Th (b)IDsatifVG = 2V (c)gdifVG= 2V andVD = 0 (d)gmifVG= 2V andVD = 2V Evaluate the definite integral. 1 9 cos(t/2) dt 0 Consider a population with a known standard deviation of 27.5. In order to compute an interval estimate for the population mean, a sample of 69 observations is drawn. [You may find it useful to reference the z table.]a. Is the condition that XX is normally distributed satisfied?YesNob. Compute the margin of error at a 99% confidence level. (Round intermediate calculations to at least 4 decimal places. Round "z" value to 3 decimal places and final answer to 2 decimal places.)c. Compute the margin of error at a 99% confidence level based on a larger sample of 275 observations. (Round intermediate calculations to at least 4 decimal places. Round "z" value to 3 decimal places and final answer to 2 decimal places.)d. Which of the two margins of error will lead to a wider confidence interval?99% confidence with n = 69.99% confidence with n = 275.