Calculate the number of mol of helium in a 2.71-L balloon at 31 degrees Celsius and...

Question

Question

Calculate the number of mol of helium in a 2.71-L balloon at 31 degrees Celsius and 2.39 atm of pressure. Be sure to answer all parts.

Answer 1

Answer #1

PV = nRT

n = PV /RT

P = 2.39 atm

V = 2.71 L

R = 0.0821 L.atm / mol K

T = 31⁰C = 304 K

n = 2.39 x 2.71 / 0.0821 x 304

n = 6.4769 / 24.9584

n = 0.259

answer = number of moles = 0.259

Answer 2

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