. A rigid steel tank holds 20.0 grams of helium gas at some temperature. The pressure of
the helium in the container is 10.0 atm. 20.0 grams of neon gas is added to the container.
What is the total pressure in the container after the neon gas is added?
a. Less than 10.0 atm
b. Exactly 10.0 atm
c. Between 10.0 atm and 20.0 atm
d. Exactly 20.0 atm
e. Greater than 20.0 atm

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