Answer to Question #87087 in Chemistry for Christy Collins

Question

What Volume Is Occupied By 0.860 Mol Of Co2 At 253.5 K And 685 Mmhg

Answer 1

According to the ideal gas law:

$$V = nRT/p$$

where V is a volume, n is a number of moles, R is a gas constant (0.0821 L∙atm/K∙mol), T is a temperature, p is a pressure.

As 685 mmHg = 0.9 atm:

V = 0.86 mol × 0.0821 L∙atm/K∙mol × 253.5 K / 0.9 atm = 19.9 L

Answer: 19.9 L