chemistry question :)

Question

If you want to make a 0.705 M solution using 3.11 grams of sodium hydroxide, how many milliliters does the solution need to occupy?

Answer 1

0.705 M NaOH = 0.705 moles/liter

Molar mass NaOH = 39.99 g/mol

3.11 g NaOH x 1 mol NaOH / 40 g = 0.07777 moles of NaOH

0.07777 moles / x L = 0.705 moles / 1 L

x = 0.0777 / 0.705

x = 0.110 L = 110 mls