Q.

15 grams of methyl alcohol is dissolved in 35 grams of water. What is the mass percentage of methyl alcohol in solution?

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a

30%

b

50%

c

70%

d

75%

answer is A.

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Detailed Solution

Total mass of solution = (15 + 35) g = 50 grammass percentage of methyl alcohol                                                                       =Mass of methyl alcoholMass of solution×100                                                                   =1550×100=30%
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