MediumChemistryHigh School (9–10)GeneralMixtures and Solutions › Mixtures, Solutions and ColloidsNumerical

A jar holds 380 g of brine that is 9 % salt by mass.

Try it on paper first. A hint, the key idea and the worked solution are here when you need them.

A jar holds $380\ \text{g}$ of brine that is $9\ \%$ salt by mass. How many grams of salt and how many grams of water does it hold?

Need a reminder? The key ideaShow

Mass by mass $\% = \dfrac{\text{mass of solute}}{\text{mass of solution}} \times 100$ , where the solution is solute plus solvent. Volume by volume $\% = \dfrac{\text{volume of solute}}{\text{volume of solution}} \times 100$ .

The worked solution

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Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.

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