Question

A rigid cylinder with a movable piston contains a sample of hydrogen gas. At 350.

K, this sample has a pressure of 210. kPa and a volume of 9.50 L. What is the
volume of this sample at STP? (Round your answer to correct number of sig figs)

Answer 1

Answer: The volume of this sample at STP is 15.4 L

Step-by-step explanation:

The combined gas equation is,

`(P_1V_1)/(T_1)=(P_2V_2)/(T_2)`

where,

`P_1` = initial pressure of gas = 210 kPa

`P_2` = final pressure of gas = 101.3 kPa ( at STP)

`V_1` = initial volume of gas = 9.50 L

`V_2` = final volume of gas = ? ( at STP)

`T_1` = initial temperature of gas = 350 K

`T_2` = final temperature of gas = 273 K ( at STP)

Now put all the given values in the above equation, we get:

`(210* 9.50)/(350)=(101.3* V_2)/(273)`

`V_2=15.4`

The volume of this sample at STP is 15.4 L