What element has a molar mass of 30.974 g/mol

Question

Isaias Gomez

Chemistry

20 May, 19:47

What element has a molar mass of 30.974 g/mol

+1

Answers (1)

Know the Answer?

Brock · Answer 1

X4O10Let molar mass of X be ymolar mass = 4y + 10 x 16 = 4y+160

so, moles = 85.2 / (4y+160)

Moles of oxygen = 10 x [85.2 / (4y+160) ]Mass of oxygen = 16 x 10 x [85.2 / (4y+160) ]which is 48.0

so, 48 = 16 x 10 x [85.2 / (4y+160) ]

Solve the equation to get y.

y = 31