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CBSE Class 11-science Answered

a 6.90M SOLUTION OF kOH in water coinains 30% by mass of KOH what is the density of solution
Asked by puneetgarg2555 | 21 May, 2018, 04:29: PM
answered-by-expert Expert Answer
 
     straight A space 6.90 space straight M space solution space contains space 6.90 space mol space of space KOH space in space 1000 space cm 3 space of space the space solution. space
Mass space of space KOH space present space in space 1000 space cm 3 space of space solution space equals space 56 space straight x space 6.90 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 386.4 space straight g
space straight A space 30 percent sign space solution space contains space 30 straight g space of space KOH space present space in space 100 space straight g space of space solution

386.4 space straight g space of space KOH space is space present space in space fraction numerator 100 cross times 386.4 over denominator 30 end fraction

space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 1288 space straight g space of space space solution.
Density space of space KOH space solution space equals space Mass over Volume

space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 1288 over 1000
space space space space space space space space space space
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 1.288 space straight g space cm minus 3.
Answered by Varsha | 21 May, 2018, 06:18: PM
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