What is the molar mass of Na2Cr2O7?

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Ответ:

filzaf9632

18.01.2022

Chemistry

The volume of gas is 48.69L.

Explanation:

To calculate the number of moles of gas, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of water = 36 g

Molar mass of water = 18 g/mol

Putting values in above equation, we get:

$\text{Moles of water}=\frac{36g}{18g/mol}=2mol$

Now, to calculate the volume of gas, we use the equation given by ideal gas, which is:

PV=nRT

where,

P = pressure of the gas = 100 kPa

V = volume of the gas = ? L

n = Number of moles of gas = 2 mol

R = Gas constant = $8.31\text{ L kPa }mol^{-1}K^{-1}$

T = temperature of the gas = 293 K

Putting values in above equation, we get:

$100kPa\times V=2mol\times 8.31\text{ L kPa }\times 293K\\\\V=48.69L$

Hence, the volume of gas is 48.69L.

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