Question

The ratio between the number of molecules in 2g of hydrogen and 32 g of oxygen is
[Given that H=1,O=16]

Options

• 1:2

• 1:0:01

• 1:1

• 0.01:1

Answer 1

Mole in 2g of hydrogen = `"Given mass"/"Molar mass"`
=`2/2` = 1 mol
Mole in 32g of Oxygen = `"Given mass"/"Molar mass"`
= `32/[16 xx 2]` = 1 mol.
Hence the ratio = `"1 mol" /"1 mol"` = 1 : 1