If you dissolve 47g of NaOH in 600g of water, what is the solution concentration?

Question

If you dissolve 47g of NaOH in 600g of water, what is the solution concentration?

Answer 1

molar mass NaOH = 40 g/mol

47 g NaOH x 1 mol / 40 g = 1.175 moles

Molal concentration = moles NaOH / kg water = 1.175 moles / 0.600 kg = 1.96 m = 2.0 m (2 sig. fig.)