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steposvetlana [31]
3 years ago
12

The densities of crystalline co2 and nh3 at 160 k are 1.56 and 0.84 g/cm3, respectively. calculate their molar volumes.

Chemistry
2 answers:
lions [1.4K]3 years ago
8 0

<u>Answer:</u> The molar volume of carbon dioxide is 28.21cm^3 and that of ammonia is 20.275cm^3

<u>Explanation:</u>

To calculate the molar volume for the given densities, we use the mass to be molar mass.

To calculate volume of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}      ......(1)

  • <u>For carbon dioxide:</u>

Density of carbon dioxide = 1.56g/cm^3

Molar mass of carbon dioxide = 44.01 g

Putting values in equation 1, we get:

1.56g/cm^3=\frac{44.01g}{\text{Volume of carbon dioxide}}\\\\\text{Volume of carbon dioxide}=28.21cm^3

Hence, the molar volume of carbon dioxide is 28.21cm^3

  • <u>For ammonia:</u>

Density of ammonia = 0.84g/cm^3

Molar mass of ammonia = 17.031 g

Putting values in equation 1, we get:

0.84g/cm^3=\frac{17.031g}{\text{Volume of ammonia}}\\\\\text{Volume of ammonia}=20.275cm^3

Hence, the molar volume of ammonia is 20.275cm^3

Neporo4naja [7]3 years ago
7 0
The molar volume, symbol Vm<span>, is the </span>volume occupied by one mole of a substance at a given temperature and pressure. <span>It is equal to the </span>molar<span> mass divided by the mass density. Therefore, we calculate as follows:

Vm(CO2) = 44.01 / 1.56 = 28.21 cm^3 / mol
</span>Vm(NH3) = 17.03 / 0.84 = 20.27 cm^3 / mol
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