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# Determining the Mass of a Substance

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1) What mass of oxgen gas will occupy 450.mL at 145mmHg and 62.5 degrees Celcius?

2) Find the volume in liters of 52.0g of CO2 at 410mmHg and 99.0 degrees Celcius.

##### Solution Summary

The solution employs the theory of ideal gases to find the mass and volume oxygen will occupy in various conditions, using simple step-by-step calculations.

##### Solution Preview

1)
mass m = ?
V = 450 mL = 0.45 L = 0.45*10^(-3) m^3
P = 145 mmHg = 145*10^(-3) mHg 145*10^(-3)*13.6*10^3*9.8 = 19325.60 Pa
(Because, P = h*density*g)
T = 62.5 degree C = ...

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• MSc , Pune University, India
• PhD (IP), Pune University, India
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