What volume would 5 moles of Helium occupy at 278°C and 765 mmHg?

1 Answer
May 31, 2016

Answer:

Approx. #220*L#.

Explanation:

We use the ideal gas equation with the appropriate constant. We know that #1*atm# #-=# #760*mm*Hg# (or more correctly, #1*atm# will support a column of mercury #760*mm# high).

#V=(nRT)/P# #=# #(5*molxx0.0821*L*atm*K^-1*mol^-1xx546*K)xx((765*mm*Hg)/(760*mm*Hg*atm^-1))^-1#

#=# #??L#