A rigid tank contains 1.80 moles of helium, which can be treated as an ideal gas, at a pressure of 27.3 atm. While the tank and gas maintain a constant volume and temperature, a number of moles are removed from the tank, reducing the pressure to 5.20 atm. How many moles are removed?

Question

Physics

Duncan

21 February, 01:08

A rigid tank contains 1.80 moles of helium, which can be treated as an ideal gas, at a pressure of 27.3 atm. While the tank and gas maintain a constant volume and temperature, a number of moles are removed from the tank, reducing the pressure to 5.20 atm. How many moles are removed?

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Answers (1)

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Louis Bautista · Answer 1

Has been removed 1.458 moles.

Explanation:

n1 = 1.8 mol

p1 = 27.3 atm

p2 = 5.2 atm

n2=?

n2 = n1 * p2/p1

n2 = 0.342 moles

Δn = n1-n2

Δn = 1.458 moles