How many liters of oxygen would be needed to produce 45.0 liters of carbon dioxide if the temperature and pressure for both are 22.0° C and 75.0 psi?

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How many liters of oxygen would be needed to produce 45.0 liters of carbon dioxide if the temperature and pressure for both are 22.0° C and 75.0 psi?

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Answer 1 · 2016-02-23T07:06:50

A precise volume of $45$ $45$ $L$ $L$ .

Explanation:

At constant pressure, and constant temperature, equal volumes of gases contain an equal number of molecules; this is [Avogadro's law of combining volumes.](http://www.chemistry.co.nz/avogadro.htm)

Given that reaction has $1 : 1$ $1:1$ stoichiometry, i.e.

$C (s) + O_{2} (g) \to C O_{2} (g)$ $C(s) + O_2(g) rarr CO_2(g)$

If $45$ $45$ $L$ $L$ of oxygen were used, stoichiometry insists that $45$ $45$ $L$ $L$ of carbon dioxide were produced. This is a good thing, because using mixed units in questions like this (i.e. $litres$ $"litres"$ and $pounds per square inch$ $"pounds per square inch"$ ) is simply asking for trouble.

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How many liters of oxygen would be needed to produce 45.0 liters of carbon dioxide if the temperature and pressure for both are 22.0° C and 75.0 psi?

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