Answer to Question #164778 in General Chemistry for chae

General Chemistry

Question #164778

How many grams of sodium hydroxide (NaOH) are needed to prepare a 0.700 molal solution using 700.0 grams water?

Expert's answer

Molar mass of NaOH = 40 g

Molality = 0.700 mol/kg

Mass of water = 700.0 g =0.700 kg

Mass of NaOH = 0.700 x 0.700 x 40

= 19.6 g

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