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→Concentration by Mass
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| style="height:20px; width:200px300px; text-align:center;" |117g of [[NaCl]] is [[dissolve]]d in 0.5dm<sup>3</sup> of [[water]]. Calculate the [[concentration]] in g/dm<sup>3</sup>.| style="height:20px; width:200px300px; text-align:center;" |28g of [[KOH]] is [[dissolve]]d in 100ml of [[water]]. Calculate the [[concentration]] in g/dm<sup>3</sup>.| style="height:20px; width:200px300px; text-align:center;" |73g of [[HCl]] is [[dissolve]]d in 400ml of [[water]]. Calculate the [[concentration]] in g/dm<sup>3</sup>.
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[[mass]] = 117g
'' '''concentration''' '' = 234g/dm<sup>3</sup>
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[[mass]] = 28g
'' '''concentration (g/dm<sup>3</sup>)''' '' = 280g/dm<sup>3</sup>
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[[mass]] = 73g