3 years ago

Flowing water eroding a limestone riverbed a Chemical Change b Physical Change

Chemistry

1 answer:

Galina-37 [17]3 years ago

7 0

Answer:

physical change

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18. What is the percent by mass sugar of a solution made by dissolving 12.45 grams of sugar in 100 grams of water?

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<h3>Further explanation</h3>

Given

mass of sugar = 12.45 g

mass of water = 100 g

Required

The percent by mass

Solution

Mass of solution :

$\tt mass~sugar+mass~water=12.45+100=112.45~g$

Percent mass of sugar :

$\tt \%mass=\dfrac{mass~sugar}{mass~solution}\times 100\%\\\\\%mass=\dfrac{12.45}{112.45}\times 100\%=11.07\%$

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