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Chemistry
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​answer question no. 2 :- (a) and (b) please tomorrow is my chemistry exam... ​

answers: 1
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Answer:

Ans is 5% and 4.4%

In part (a)

Concentration= Mass of solute/Mass of solution x 100

Concentration= 15/285+15(Mass of water + solute)×100

=15/300 ×100

=5%

In part (b)

Concentration= Volume of solute/Volume of solution x 100

=4/90×100

=0.044444... x 100

=4.444... %

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Alexandra
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