A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 mL. What would this gas occupy at 107°C and 0.789 atm

Answer: 3.41 mL

Explanation: Solution:

Use Combine gas law to solve this problem.

P1V1 / T1 = P2V2 / T2

First convert temperature to K

T1 = 47 °C + 273 = 320 K

T2 = 107°C + 273 = 380 K

Derive to find V2:

V2 = P1 V1 T2 / T1 P2

Substitute the values:

V2 = 1.03 atm x 2.20 mL x 380 K /

320 K x 0.789 atm

= 3.41 mL

Cancel out the units of atm and K so the remaining unit is in mL.