Question

Calculate mass of SO2 gas which contains 1.505 x 1025 molecules.

GRADE 11

Answer 1

Answer:

160 gm

Explanation:

1 mole contains 6.023×10^23 molecules

Then, 1.505×10^25 molecules are equal to 2.5 moles

number of moles = weight / molecular weight

weight= number of moles × molecular weight

molecular weight of SO2 = 64 gm

weight = 2.5×64 = 160 gm