01-05-2020
Chemistry

contestada

How many grams of NaBr are needed to make 60 g of a 5.0% solution?

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drpelezo drpelezo

01-05-2020

Answer:

3.0 gram NaBr

Explanation:

A 5.0% aqueous solution of NaBr => 5 grams NaBr per 100 grams of solution

=> 0.05 gram NaBr per 1.0 gram of solution

=> grams of NaBr for 60g of 5% solution = 0.05·g·NaBr/g·Soln X 60g·Soln

= 3.0g NaBr

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