if 21cm3 of alcohol is present in 70cm3 of its aqueous solution the percentage by volume of alcohol will be?
Answers
Answered by
0
Answer:
21/(21+70)
Explanation:
volune of alcohol/ total volume of the solution
it gives you the percentage by volume of alcohol.
Answered by
0
Answer:
30 %
Explanation:
here we take volume by volume percentage
volume of solute (alcohol) = 21cm3
volume of solution = 70cm3
% concentration of alcohol = volume of solute /volume of solution × 100
= 21/70 ×100
= 30%
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