Calculate molarity of HNO3 please help?

Calculate molarity of HNO3 prepared by dissolving 22.3 grams of HNO3 in water to make 875 ml of solution... Please help I'm stuck

2 answers

Molarity of HNO3=moles/volume (L)

1 mole of HNO3=63.01 g
and
875mL=0.875L

Solve for moles:

22.3g*(1 mole/63.01g)=moles of HNO3

Molarity of HNO3=moles of HNO3/0.875L

***Answer contains no more then 3-significant figures.
0.405 mol/litres