Chemistry Molarity

Question

What mass of NaOH is required to make 500 mL of 1 M NaOH solution?

Answer 1

Molar mass NaOH = 40.0 g/mole

1 M NaOH = 1 mole/liter

500 ml = 0.5 L

Thus, 1 mole/L x 0.5 L x 40 g/mole = 20 g of NaOH needed