Question

the mass of the gaseous substance formed, if 2,00 g of hydrogen and 35,5 g of chlorine have reacted completely?

Answer 1

$H _ 2 ​ (g) +Cl _ 2 ​ (g) →2HCl (g)$

Moles of hydrogen $=\frac{2.00}{1}=2.00$

Moles of chlorine $=\frac{35.5}{35.5}=1.00moles$

Mass of substance formed = $36.46×2=72.92g$