How many moles are in 34.51 L of C*O_{2} assuming the gas is at STP

Explanation:

Atomic number = 12

Block = s-block

Period = 3rd

Group = 2nd

Answer:

Explanation:

It is odd to describe the presence of a given substance and its dissolved species as a competition but the state is called an equilibrium in solubility.

Answer:

Solubility

Explanation:

Mark that

The amount of given substance and dissolved species is constant at equilibrium .

As per le ch atler's principle

If you change the concentration it would affect the Equilibrium n

Answer:

17.1 mol

Explanation:

(8.68g/mL * 125 mL) = 1085 g

1085 g/ (63.55 g/mol) = 17.1 mol

The properly balanced chemical equation for this chemical reaction is written as follows:

                   [tex]FeCl_{3}(aq)+3Na0H(aq) \rightleftharpoons Fe(OH)_3(s)+3NaCl(aq)[/tex]

A chemical reaction can be defined as a chemical process that involves the continuous transformation (rearrangement) of the ionic, atomic or molecular structure of a chemical element by breaking down and forming chemical bonds, in order to produce a new chemical compound while new bonds are formed.

The chemical reaction of aqueous ferric hydroxide that is dissolved in aqueous sodium hydroxide produces ferric hydroxide and aqueous sodium chloride. Thus, the properly balanced chemical equation for this chemical reaction is written as follows:

                   [tex]FeCl_{3}(aq)+3Na0H(aq) \rightleftharpoons Fe(OH)_3(s)+3NaCl(aq)[/tex]

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The molar concentration of benzene is 0.05mol/L

Data;

molar mass of benzene = 78g/mol

molar mass of ethanol = 46g/mol

mole fraction of benzene is

[tex]mole fraction = \frac{moles of benzene}{total mole}[/tex]

Let's substitute the values and find the mole fraction of benzene

[tex]_yC_6H_6 = \frac{\frac{0.005}{78} }{(\frac{0.005}{78})+ (\frac{1-0.005}{46}) }\\ _yC_6H_6 = 0.00295[/tex]

The density of benzene given is 789 kg/m^3

Molar concentration of the solution is

[tex]M = \frac{789}{0.046} = 17.15Kmol/m^3[/tex]

The concentration of benzene is the product of mole fraction and the molar concentration of the solution

[tex]M = 0.00295 * 17.152 = 0.05Kmol/m^3= 0.05mol/L[/tex]

The molar concentration of benzene is 0.05mol/L

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Answer:

This question requires use of Avogrado’s constant that states there are 6.02 x10^23 constituent particles contained in the amount of a substance given by one mole. Constituent particles are usually molecules, ions or atoms. Therefore there are 18.06x10^23 total atoms, 12.04x10^23 oxygen atoms, 6.02x10^23 carbon atoms and 6.02x10^23 carbon dioxide molecules.

Answer:

Option D. Electron clouds with a total of 7 electrons.

Explanation:

For an atom to be neutral (i.e having a charge of zero), the number of protons and electrons must be equal.

Thus, to know which option is correct, we shall determine the number of protons and electrons in the nitrogen atom as given in the question above.

From the question given above, we obtained the following:

Atomic number = 7

Mass number = 14

Number of protons =?

Number of electrons =.?

Next, we shall determine the number of protons in the nitrogen atom as follow:

Atomic number of an element is simply defined as the number of protons in the atom of the element. Mathematically,

Atomic number = proton number

Atomic number = 7

Therefore,

Number of protons = 7

Next, we shall determine the number of electrons in nitrogen atom as follow:

Since the atom is neutral (i.e having a charge of zero), the number of protons and electrons are equal i.e

Number of protons = number of electrons

Number of protons = 7

Therefore,

Number of electrons = 7

Thus, the nitrogen atom must have 7 electrons in order for it to be neutral.

**** Check ****

Charge of atom = Proton – Electron

Charge = 0

Proton = 7

Electron = 7

Charge of atom = Proton – Electron

0 = 7 – 7

0 = 0

Answer:

A and D

Explanation:

Took test.

The molarity of the solution in a large beaker that has 6.75 L of a solution containing 5.25 moles of copper (II) sulfate in water is 0.78M.

The molarity of a solution can be calculated using the following formula:

M = n/V

Molarity = 5.25/6.75

Molarity = 0.78M

Therefore, the molarity of the solution in a large beaker that has 6.75 L of a solution containing 5.25 moles of copper (II) sulfate in water is 0.78M.

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Answer:

The FIRST option, give me brainliest answer pls

Explanation:

The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen

Answer:

(a)

carbon dioxide+ glucose+ sunlight * water + oxygen

Explanation:

I Took This Test Before, I Hope You Get A Good Grade On The Rest Of The Questions

The part that is missing from the product side = 6 oxygen atoms.

Photosynthesis is the process by which green plants traps in energy from the sun, through their chlorophyll, which they use in the manufacture of sugar with oxygen as a by-product.

The balanced equation of photosynthesis;

6CO2 + 6H2O + (energy) → C6H12O6 + 6O2

From the equation given,

6CO2 + 6H20 - CH1206+?

The missing part of the product = 6O2 (-6 oxygen atoms)

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Answer: Heat energy is another name for thermal energy.

Explanation:

As thermal energy comes from moving particles, it is a form of kinetic energy. Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature.

Answer:

When a substance heats up, the rise in temperature makes these particles move faster and bump into each other. Thermal energy is the energy that comes from the heated up substance. The hotter the substance, the more its particles move, and the higher its thermal energy.

Explanation:

Given

Weight of Water (H2O) = 6.4 gms

To find

Number of moles of water = ?

Solution

we know that molar mass of H2O = 18 g

Now,

[tex]Number \: of \: moles =\frac{Given \: weight \: of \: substance}{molar \: mass \: of \: substance} [/tex]

Number of moles = 6.4/18 = 0.355~ 0.36 moles

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Answer:

Explanation:

h2o   =  18 gmol-1

             1mol =18 g

             18 g  =1mol

             6.4g =1/18*6.4

                      = 0.355

                      =0.36mol

✅

IamSugarBee

One mole of or 392 g of chromium sulphate gives 3 moles of sulphate ions. Thus 30 g of chromium gives 0.15 moles of sulphate ions or 9.39 ×10²² ions.

Ions are charged substances formed by electron lose or gain by an atom. If an atom gain an electron it acquire one unit of  negative charge and if it lose an electron it acquires a positive charge.

The ionization of chromium sulphate is written as follows:

[tex]Cr_{2}(SO_{4})_{3} \rightarrow 2Cr^{3+} + 3SO_{4}^{2-}[/tex]

Hence, one moles of chromium sulphate forms 3 moles of sulphate ions. One mole of chromium sulphate is 392.18 g/mol. Thus number of moles 20.4 g of the compounds is 20.4 / 392.18 = 0.052 moles.

The number of moles of sulphate ions produced by 0.052 moles of chromium sulphate is calculated as follows:

0.052 × 3 = 0.15 moles.

One mole of sulphate ion contains 6.022 × 10 ²³ions. Thus number of ions in 0.15 moles is 0.15 ×6.022 × 10 ²³ =  9.39 ×10²² ions.

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#SPJ2

Answer:

Hear is the transfer of thermal energy between system.

Work is the transfer of mechanical energy between two systems.

Answer:

The molar mass of N

2

is 28 g/mol.

56 grams of N

2

=

28g/mol

56g

=2moles

At STP, 1 mole of any gas occupies a volume of 22.4 L.

2 moles of N

2

at STP will occupy a volume of 2×22.4=44.8L

Answer:

Air is considered as a mixture because it is composed of various separate components. The air has no characteristic properties of its own. ur welcome :)

Explanation:

Answer:

3. B

4. B

5. C

6. A

7. D

8. C

Explanation:

3. A material or substance is said to be BRITTLE If it can be broken easily when there is an application of force e.g glass

4. A material that cannot conduct heat and electricity is called an INSULATOR. Among the given options, WOOD is a poor conductor of heat i.e. it cannot withstand hear. Iron, gold and copper are all metals, hence, very good conductors.

5. Matter which constitutes all substances tend to react with one another, however, when the observed trait or characteristic is called a CHEMICAL PROPERTY.

6. Physical property of matter can either be intensive or extensive. INTENSIVE PHYSICAL PROPERTY is that characteristic or trait of matter that does not depend on the amount. Example is temperature, density etc

7. PHYSICAL PROPERTY is the property of matter that can be observed or perceived with our senses easily without changing its chemical composition or nature. Example of physical property is melting.

8. Matter exists in three states; solid, gas and liquid. In the GASEOUS state of matter, particles are relatively far apart or scattered and practically independent of each other. This allows gas to be able to diffuse.

Answer:

Hydrogen peroxide can function as an oxidizing agent as well as reducing agent. 

H2O2 act as oxidizing agent in acidic medium.

Explanation:

Example : 2FeSO4 +H2SO4 +H2O2 —>

(ferrous sulphate)

Fe2(SO4)3 +2H2O

(ferric sulphate)

Answer:

1 grams Cl2 is equal to 0.014103178856514 mole.

Explanation:

Hope This Helps

Have A Great Day

Answer:

once hydrogen ions are outside the membrane they are allowed to flow back in. this flow is changed to energy that is stored in the bonds of new molecules.

Explanation:

Answer:

A red shirt appears red to our eyes because the shirt absorbs the red wavelengths of visible light. The shorter the wavelength of light, the more energy it has.

Explanation:

Please mark as brainliest

Answer:

c

Explanation:

resources are distributed unevenly and often must be moved for human use

Answer:c

Explanation: correct on edg 2020

This problem is providing the mass of gummy bears which are assumed to contain 13 g of sucrose, which undergoes combustion and produces -214.3kJ of heat according to the following:

In chemistry, when a fuel undergoes combustion, a reaction with oxygen, it produces carbon dioxide and water in a complete combustion. In such a way, with the given reaction, we can write the heat of reaction as -11,286 kJ per mole of reaction:

[tex]\Delta H=-11,286\frac{kJ}{mol\ rxn}[/tex]

Which means that if we need the total heat released by 13 g of sucrose, one must apply the following dimensional analysis including this fuel's molar mass (342.3 g/mol):

[tex]Q=-11,286\frac{kJ}{mol\ rxn}*\frac{1mol\ rxn}{2molC_1_2H_2_2O_1_1}*13gC_1_2H_2_2O_1_1 *\frac{1molC_1_2H_2_2O_1_1}{342.3gC_1_2H_2_2O_1_1} \\\\Q=-214.3kJ[/tex]

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Answer:

O3 => CLO + O2

Explanation:

ozone gas yields one Chlorine Monoxide gas, and two Oxygen gas. i forgot how to explain it well, but I know how to do it and will help in the future if needed :)

Answer:

7.2 × 10^7 is the correct answers.

Thank you ☺️☺️

Answer:

d.-379 cal/mol

Explanation:

ΔG = ΔG⁰ + RT ln K

for equilibrium ΔG = 0

ΔG⁰ + RT ln K =0

ΔG⁰   =  -  RT ln K

PG ⇒ PEP

K = [ PEP ] / [ PG ]

= .68 / .32

= 2.125

ΔG⁰   =   - 1.987 x 273 x  ln 2.125

= - 409 Cal / mole

Option d is the nearest answer .