Question

problem 1. a gas has a measured volume of 100. ml under a pressure of 740. mm hg. what would the volume be under a pressure of 780. mm hg at constant temperature?

Answer 1

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P1 * V1) / T1 = (P2 * V2) / T2

where P1 and V1 are the initial pressure and volume, respectively, T1 is the initial temperature, P2 and V2 are the final pressure and volume, respectively, and T2 is the final temperature.

Since the temperature is constant, we can simplify the equation to:

(P1 * V1) / P2 = V2

Substituting the given values, we get:

(740 mmHg * 100 mL) / 780 mmHg = V2

Simplifying this expression, we get:

V2 = 94.87 mL

Therefore, the volume of the gas under a pressure of 780 mmHg would be 94.87 mL, assuming constant temperature.