Concentration of aqueous solutions

Exercise 2

    

Calculate the mass of sulfuric acid in $50\;mL$ of a $0.1\; M$ solution

$50\;mL$ $=$ $0.05L$ $c_{H_2SO_4}$ $=$ $0.10M$ $\frac{n_{H_2SO_4}}{V}$ $=$ $0.10M$ $n_{H_2SO_4}$ $=$ $0.10\cdot 0.05$ $=$ $5.0\cdot 10^{-3}mol$ $m_{H_2SO_4}$ $=$ $n_{H_2SO_4}M_{H_2SO_4}$ $=$ $5.0\cdot 10^{-2}\cdot 98$ $=$ $4.9 \cdot 10^{-1}\; g$