Question

Which one of them contains more number of molecules 6.6g of carbon dioxide or 3.2 g of sulfuric dioxide?

Answer 1

co2 .........................

Answer 2

moles of CO2 =
$6.6 \div 44 = \frac{3}{20}$

moles of sulphur dioxide =

$3.2 \div 64 = \frac{1}{20}$
3/20 > 1/20
therefore 6.6g of CO2 contains more no. of molecules