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olga2289 [7]
3 years ago
9

Gas molecules are constantly in motion. True or False?

Chemistry
1 answer:
SpyIntel [72]3 years ago
4 0
True gas moves throughout the atmosphere
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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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The percent by mass sugar of a solution : 11.07%

<h3>Further explanation</h3>

Given

mass of sugar = 12.45 g

mass of water = 100 g

Required

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\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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3 years ago
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