Answer:
P₁ = 0.18 atm
Explanation:
Given data:
Mass of neon = 40 g
Mass of helium = 40 g
Total pressure = 0.90 atm
Partial pressure of neon = ?
Solution:
Number of moles of helium
Number of moles of helium = mass/ molar mass
Number of moles of helium = 40 g/ 4 g/mol
Number of moles of helium = 10 mol
Number of moles of neon:
Number of moles of neon = mass/ molar mass
Number of moles of neon = 40 g/ 20g/mol
Number of moles of neon = 2 mol
Partial Pressure of neon:
P₁ = [ n₁ / nt ] × Pt
P₁ = partial pressure of neon
n₁ = 2 mol
nt = 10 mol + 2 mol = 12 mol
P₁ = [ 2 mol / 12 mol ]× 0.900 atm
P₁ = 0.2× 0.900 atm
P₁ = 0.18 atm
