a bottle of rubbing alcohol is labeled 70%(v/v) how many milliliters of isopropyl alcohol are in a 400ml bottle of this solution?

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ixKevn ixKevn

15-02-2018
Chemistry

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a bottle of rubbing alcohol is labeled 70%(v/v) how many milliliters of isopropyl alcohol are in a 400ml bottle of this solution?

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kenmyna kenmyna · Answer 1 · 2018-07-03T16:19:41+02:00

The number of milliliters of isopropyl alcohol that are in a 400 ml bottle of this solution is 280 Ml

calculation

% V/V = volume of solute/ volume of solution x 100
Let the volume of solute be = y ml
the volume of solution = 400 ml
convert 70% to fraction = 70/100

by substituting the value in the equation

= y ml/ 400 ml = 70/100

by cross multiplication

100y =400 x70
100y= 28000
y= 280 ml