Question

What is the molar concentration of a solution of 63.0g HNO3 in 0.25 L of H2O?

Answer 1

find the n:

$n=\frac{m}{M}=\frac{63}{63.012}=0.99$

 the molar concentration of a solution

$c=\frac{n}{V}=\frac{0.99}{0.25}=3.96$