What is the mass of oxygen in 250 g of sulfuric acid, H2SO4?

A.

D
1 mole of H2SO4 weighs 2+ 32+ 64 g = 98 g
For that reason 250 grms is the same as 2.55 moles
In 1 moles associated with material you will find 4 moles of air (64 g)
In 2.55 moles associated with acid there’s 2.55 x 64 g = 163.2 g
That is about corresponding to your solution D

moles H2SO4 = 250 g/ 98 g/mol=2.55
moles air = 2.55 x 4 =10
size air = 10 mol x 16 g/mol= 160 g

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