A gas cylinder can hold $1 k g$ of hydrogen at room temperature and pressure:
What weight of $C O_{2}$ can the cylinder hold under similar conditions of temperature and pressure? $(H = 1, C = 12, O = 16)$ .

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Solution

A gas cylinder can hold 1 kg
The mass of hydrogen $= 1 k g \times 1000 g / k g = 1000 g$ .
The molar mass of hydrogen is 2 g/mol.
The number of moles of hydrogen present $= \frac{mass}{molar mass} = \frac{1000 g}{2 g / m o l} = 500 m o l$ .
The number of moles of $C O_{2} =$ the number of moles of $H_{2} = 500$ moles.
The molar mass of $C O_{2} = 12 + 2 (16) = 44$ g/mol. The mass of $C O_{2} = 500 m o l \times 44 g / m o l = 22000 g$
Convert the unit from g to kg.
$\frac{22000 g}{1000 g / k g} = 22 k g$ .

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A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure:What weight of CO2 can the cylinder hold under similar conditions of temperature and pressure? (H=1,C=12,O=16).

A gas cylinder can hold $1 k g$ of hydrogen at room temperature and pressure:
What weight of $C O_{2}$ can the cylinder hold under similar conditions of temperature and pressure? $(H = 1, C = 12, O = 16)$ .