A scientist needs to collect a 0.050 mole sample of helium, but needs to know how large his helium container should be. What vol

Question

4 years ago

13

ume is needed to store the sample of helium gas at 202.6kPa and 400K? A. 657 milliliters B. 760 milliliters C. 820 milliliters D. 1,025 milliliters

1 answer:

Mumz [18] · Answer 1 · 2021-12-02T23:22:52+03:00

We can use the ideal gas equation:

PV = nRT

P = 202.6kPa = 202600 Pa (You have to multiply by 1000)

n = 0.050 mole

R = 0.082 atm*l/(K*mol)

T = 400K

We will have to convert from Pa to atm or viceversa.

101325 Pa________1 atm

202600 Pa________x = 2.00 atm

2atm*V = 0.050 mole*0.082 atm*l/(K*mol)* 400K

V = 0.050 mole*0.082 atm*l/(K*mol)* 400K/2atm = 0.82 liters = 820 mililiters