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28 March, 01:51

What masses of kbr and water are needed to produce 300. g of a solution that is 3.00 % by mass?

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  1. 28 March, 03:07
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    In a solution of KBr and water; KBr is the solute and water is the solvent;

    Therefore; to achieve 3% by mass; it means we are going to have 3% of the mass being the solute and the other 97 % being the solvent.

    Thus; KBr (solute) = 3/100 * 300 (total mass) = 9 g

    Hence; the appropriate masses will be; 9.00 g of KBr and 291 g of water.
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