#5 5. A sample of helium gas has a volume of 6.50 L at a pressure...

Question

Question

#5

Answer 1

Answer #1

5)

Given:

P = 845 mm Hg

= (845/760) atm

= 1.1118 atm

V = 6.5 L

T = 25.0 oC

= (25.0+273) K

= 298 K

find number of moles using:

P * V = n*R*T

1.1118 atm * 6.5 L = n * 0.08206 atm.L/mol.K * 298 K

n = 0.2955 mol

Answer: 0.296 mol

Only 1 question at a time please

Answer 2

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