Chemistry, asked by yashsharma2003, 1 year ago

find the average molar mass of a gaseous mixture in g/mole , which contain 1.2046×10^23 atoms of an unknown gas and 0.2 mole of h2 gas. the weight of mixture is 22g.​

Answers

Answered by gadakhsanket
10

Hey Dear,

● Answer -

Average molar mass = 55 g/mol

◆ Explanation -

Mass of hydrogen is given by -

W1 = n1 × M1

W1 = 0.2 × 2

W1 = 0.4 g

Weight of other gas is calculated by -

W2 = W - W1

W2 = 22 - 0.4

W2 = 21.6 g

No of moles of other gas is calculated by -

n2 = N / NA

n2 = 1.2046×10^23 / 6.022×10^23

n2 = 0.2 mol

Molar mass of other gas is calculated by -

M2 = W2 / n2

M2 = 21.6 / 0.2

M2 = 108 g/mol

Average molar mass of gaseous mixture is calculated by -

M = (W1 + W2) / (n1 + n2)

M = 22 / (0.2 + 0.2)

M = 55 g/mol

Therefore, average molar mass of gaseous mixture is 55 g/mol.

Hope this helped you. Keep asking..

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