How many atoms of hydrogen are present in Ammonium Nitride (NH4)3N?

Answer: 1413.39 inches

Explanation:

Formula for converting meters to inches

Meters x 39.37 (roughly) = Value in inches

Applying formula

35.9 meters x 39.37 = 1413.39 inches (roughly)

9.82 mL is the volume of 32% HCl required to make about 1 N HCl in 100ml volumetric flask.

N₁V₁ = N₂V₂

where,

N₁ = Normality of solution with known concentration

V₁ = Volume of solution with known concentration

N₂ = Normality of solution with unknown concentration

V₂ = Volume of solution with unknown concentration

Now find the mass of solution

Mass = Density × Volume

         = 1.16 × 0.32 × 1000

         = 371.52 g

Normality = [tex]\frac{\text{Weight}}{\text{Equivalent weight}}[/tex]

                = [tex]\frac{371.52\ g}{36.5}[/tex]

                = 10.18 equivalents

Now put the values in above formula we get  

N₁V₁ = N₂V₂

1 × 100 = 10.18 × V₂

100 = 10.18 × V₂

[tex]V_{2} = \frac{100}{10.18}[/tex]

    = 9.82 mL

Thus from the above conclusion we can say that 9.82 mL is the volume of 32% HCl required to make about 1 N HCl in 100ml volumetric flask.

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Answer:

I'm thinking you should go for the option C.

Answer:

Radiation

Explanation:

Answer:

The uncertainty principle says this view is only a guess, a snapshot of what the electrons around the nucleus could possibly look like. Specifically, the uncertainty principle says that we cannot know the exact location and speed of the electrons. Therefore, the planetary-like arrangement of the electrons around the nucleus is rarely ever assumed.

The correct answer to the problem is 0.193 which is three significant figures.

The term significant figures has to do with the figures that have a mathematical meaning. We know that the result has to correspond to the highest number of significant figures.

Hence, If we multiply 0.34 x 0.568 the result ought to be recorded as 0.193 which is three significant figures.

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In the case the relative strength of the two forces C and D is that D represents a ion-dipole forces, which are known to be very much stronger than the force that is said to be represented by C.

A concept map is known to be a kind of a special type of a web diagram that is often used in the exploration of knowledge and gathering and also in sharing of information.

Note that Concept mapping is a strategy used in creating the idea of a map as it is made up of  a visual depiction of ideas, theories, and others.

Note that Intermolecular forces are known to be those forces that are said to be attractive and also a kind of a repulsive forces that is seen between the molecules of a substance.

Looking at the image attached, In regards to the relative strength of the two forces C and D. The fact is that D stands for ion-dipole forces, which are known to be very much stronger than the force that is said to be represented by C.

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The reaction H₂SO₄ + Ca ⇒ CaSO₄ + H₂ is a Single Replacement reaction because Ca replaces H in H₂SO₄.

It is a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

Let's consider the following reaction.

H₂SO₄ + Ca ⇒ CaSO₄ + H₂

What kind of reaction is this?

The reaction H₂SO₄ + Ca ⇒ CaSO₄ + H₂ is a Single Replacement reaction because Ca replaces H in H₂SO₄.

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The mass of NaHCO₃ required to produce 1.76 g of CO₂ is 3.36 g

NaHCO₃ + HA --> NaA + CO₂ + H₂O

Molar mass of NaHCO₃ = 84 g/mol

Mass of NaHCO₃ from the balanced equation = 1 × 84 = 84 g

Molar mass of CO₂ = 44 g/mol

Mass of CO₂ from the balanced equation = 1 × 44 = 44 g

SUMMARY

From the balanced equation above,

44 g of CO₂ were produced from 84 g of NaHCO₃

From the balanced equation above,

44 g of CO₂ were produced from 84 g of NaHCO₃

Therefore,

1.76 g of CO₂ will be produced from = (1.76 × 84) / 44 = 3.36 g of NaHCO₃

Thus, 3.36 g of NaHCO₃ is needed for the reaction

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The equation for carbon-14 emission by Radium-223 nuclei is given below:

[tex]^{223}_{88}Ra \rightarrow\: ^{209}_{82}Pb + \:^{14}_{6}C[/tex]

Radioactivity is the spontaneous decay of a substance with emission of radiation.

The equation for carbon-14 emission by Radium-223 nuclei is given below:

[tex]^{223}_{88}Ra \rightarrow\: ^{209}_{82}Pb + \:^{14}_{6}C[/tex]

In conclusion, the emission of carbon-14 by Radium-223 nuclei produces Lead-209 nuclei.

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Answer:

979 atm

Explanation:

To calculate the osmotic pressure, you need to use the following equation:

π = i MRT

In this equation,

-----> π = osmotic pressure (atm)

-----> i = van't Hoff's factor (number of dissolved ions)

-----> M = Molarity (M)

-----> R = Ideal Gas constant (0.08206 L*atm/mol*K)

-----> T = temperature (K)

When LiCl dissolves, it dissociates into two ions (Li⁺ and Cl⁻). Therefore, van't Hoff's factor is 2. Before plugging the given values into the equation, you need to convert Celsius to Kelvin.

i = 2                             R = 0.08206 L*atm/mol*K

M = 20 M                    T = 25°C + 273.15 = 298.15 K

π = i MRT

π = (2)(20 M)(0.08206 L*atm/mol*K)(298.15 K)

π = 979 atm

Answer:

4.69 x 10²⁴ molecules CH₄

Explanation:

To find the amount of molecules, you need to (1) convert grams to moles (via molar mass) and then (2) convert moles to molecules (via Avogadro's Number). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value (125 g).

Molar Mass (CH₄): 16.05 g/mol

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

125 g CH₄         1 mole            6.022 x 10²³ molecules
----------------  x  ---------------  x  -------------------------------------  =  
                          16.05 g                       1 mole

=  4.69 x 10²⁴ molecules CH₄

Answer:

Options

*A) 60 cm3 = Correct.* This is the answer

B) 10 cm3

C) 40 cm3

D) 30 cm3

E) 70 cm3

Explanation:

The volume of the CO₂ produced at STP, given the data is 141 mL

P₁V₁ / T₁ = P₂V₂ / T₂

Where

P₁V₁ / T₁ = P₂V₂ / T₂

(99.81 × 156) / 298 = (101.325 × V₂) / 273

Cross multiply

298 × 101.325 × V₂ = 99.81 × 156 × 273

Divide both sides by 298 × 101.325

V₂ = (99.81 × 156 × 273) / (298 × 101.325)

V₂ = 141 mL

Thus, the volume of the CO₂ produced at STP is 141 mL

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Answer:

3.88kg

Explanation:

weight=mass_of_body(m) x acceleration_due_to_gravity(g)

The weight is given and acceleration is also give

For mass divide the weight by acceleration.

The thermodynamics of leaching of ilmenite in hydrochloric acid for titania pigment production is an industrial production of nano-sized titanium dioxide (TiO2).

Thermodynamics is defined as the change in the energy of system that brings about work in that system.

The leaching of ilmenite which is a titanium-iron oxide mineral with HCl can lead to the production of titanium dioxide (TiO2).

The use of thermodynamics in this process controls the heat and energy of the leaching system leading to a better yield of final products.

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Answer: 962 torr

Explanation:

The equation of the neutralization reaction is:

HOC(CO₂H)(CH₂CO₂H)₂ + Na₂CO₃ ----> HOC(CO₂Na)(CH₂CO₂Na)₂ + H₂O

The main acid in lemon juice is citric acid.

Citric acid is a tricarboxylic acid and will react with baking soda to form a salt and water.

The equation of the neutralization reaction is shown below:

HOC(CO₂H)(CH₂CO₂H)₂ + Na₂CO₃ ----> HOC(CO₂Na)(CH₂CO₂Na)₂ + H₂O

In conclusion, the neutralization of citric acid in lemon juice produces a salt and water.

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The volume of 0.555M KNO3 solution would contain 12.5 g of solute iss 223 mL.

The mass of solute in a given volume of solution is related by the formula below:

Therefore, volume of solution is given by:

Volume = Mass /molarity * molar mass

Molar mass of KNO₃ = 101 g/mol

Volume = 12.5/(0.555 * 101)

Volume = 0.223 L or 223 mL

In conclusion, the volume of the solution is obtained from the molarity of solution as well as mass and molar mass of solute.

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The molality of the lithium ions is calculated as 0.906 m

Given that the compound is written as Li₃PO₄, the dissociation of the compound is given by the  equation;

Li₃PO₄ -----> 3Li^+ + PO₄^3-

Since there are three mole of lithium ions in the compound, it the follows that the molality of the lithium ions is;

3 * 0.302 m = 0.906 m

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The volume of 2.0 mol/L cobalt(II) chloride solution required for the reaction is 187.5 mL

Mole = molarity × volume

Mole of Na₂CO₃ = 1.5 × 0.25

Mole of Na₂CO₃ = 0.375 mole

Balanced equation

CoCl₂ + Na₂CO₃ -> CoCO₃ + 2NaCl

From the balanced equation above,

1 mole of Na₂CO₃ reacted with 1 mole of CoCl₂.

Therefore,

0.375 mole of Na₂CO₃ will also react with 0.375 mole of CoCl₂.

Volume = mole / molarity

Volume of CoCl₂ = 0.375 / 2

Volume of CoCl₂ = 0.1875 L

Multiply by 1000 to express in mL

Volume of CoCl₂ = 0.1875 × 1000

Volume of CoCl₂ = 187.5 mL

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C10H22 is a compound which is the most soluble in CC14 because both are non-polar in nature.

We know that like dissolve like which means that polar solutes only  dissolve in polar solvent while on the other hand, non-polar solutes only dissolve in non-polar solvent.

So we can conclude that C10H22 is a compound which is the most soluble in CC14 because both are non-polar in nature.

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Answer:

Mg₂P₂O₇ · 3 H₂O

Explanation:

(Step 1)

First, you need to convert each mass to moles via the molar masses of each element/compound.

Molar Mass (Mg): 24.305 g/mol

4.86 grams Mg              1 mole
------------------------  x  ------------------------  = 0.200 moles Mg
                                   24.305 grams

Molar Mass (P): 30.974 g/mol

6.20 grams P              1 mole
---------------------  x  ------------------------  =  0.200 moles P
                                30.974 grams

Molar Mass (O): 15.998 g/mol

11.20 grams O               1 mole
-----------------------  x  -----------------------  =  0.700 moles O
                                  15.998 grams

Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol

Molar Mass (H₂O): 18.014 g/mol

5.40 grams H₂O               1 mole
--------------------------  x  -----------------------  =  0.300 moles H₂O
                                     18.014 grams

(Step 2)

To find the amount of each element/compound in the formula, you need to divide each molar value by the smallest molar value. This allows you to determine the accurate molar ratio the hydrated salt should have. In this case, 0.200 moles is the smallest value.

0.200 moles Mg / 0.200  =  1 mole Mg

0.200 moles P / 0.200  =  1 mole P

0.700 moles O / 0.200  =  3.5 moles O

0.300 moles H₂O / 0.200  =  1.5 moles H₂O

There can only be whole number amounts of each element/compound in the formula. Therefore, you need to multiply each amount by 2.

1 mole Mg x 2 = 2 moles Mg

1 mole P x 2 = 2 moles P

3.5 moles O x 2 = 7 moles O

1.5 moles H₂O x 2 = 3 moles H₂O

(Step 3)

Now that we know the amount of each element/compound, we can build the formula. The amount of each element is represented by subscripts and the amount of each compound (H₂O) is represented by coefficients.

Mg₂P₂O₇ · 3 H₂O

According to the research, a hazard is the real possibility that we will suffer some harm. An example of a hazard is free toxic gases.

It is associated with situations that have potentially harmful effects on the body, the environment or property.

In chemistry, it is understood as those conditions of potential health damage caused by uncontrolled exposure to chemical agents of various kinds, such as the release of toxic and flammable gases such as ethanol.

Therefore, we can conclude that according to the research, a hazard is the real possibility that we will suffer some harm. An example of a hazard is free toxic gases.

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Earth's rotation, gravity, and mantle dynamics play greater role in reshaping the land of continents and Islands.

Earth's rotation, gravity, and mantle dynamics are the forces that play a significant role in influencing the size, shape, and positioning of the different landmasses of our continents and islands. These forces are responsible for the change in shape of land masses with the passage of time.

So we can conclude that Earth's rotation, gravity, and mantle dynamics play greater role in reshaping the land of continents and Islands.

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Describes the movement of the plates across the Earth's lithosphere?

Answer:

424 °C

Explanation:

If all other variables are held constant, the missing temperature can be found using the Charles' Law equation:

V₁ / T₁ = V₂ / T₂

In this equation, "V₁" and "T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature. You can plug the given values into the equation and simplify to find the final temperature.

V₁ = 435 mL                    V₂ = 842 mL

T₁ = 219 °C                       T₂ = ? °C

V₁ / T₁ = V₂ / T₂                                          <----- Charles' Law

435 mL / 219 °C = 842 mL / T₂                <----- Insert values

1.9863 = 842 mL / T₂                               <----- Simplify left side

(1.9863) x T₂ = 842 mL                             <----- Multiply both sides by T₂

T₂ = 424 °C                                              <----- Divide both sides by 1.9863

Answer:

Nuclear fuel has a higher energy density than fossil fuel

From the first law of thermodynamics, the work done is -36 J.

We are told that the gas is expanding hence it does work while heat is absorbed from the surroundings. This implies that q is positive while w is negative.

Hence;

U = q - w

w = q - U

w =  89J - 125J

w = -36 J

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If C3H8O is dissolved in water, it would be expected to be a strong electrolyte.

A strong electrolyte is a solute or solution (already an electrolyte) that can completely dissociates in solution.

C3H8O is one of those compounds expected to be a strong electrolyte.

Thus, if C3H8O is dissolved in water, it would be expected to be a strong electrolyte.

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