Question

2.5g of sugar is dissolved in 47.7g of water. Calculate as percent by mass ​

Answer 1

Answer:

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Explanation:

Amount of sugar=2.5g

Amount of water=47.5g

Total amount=47.5+2.5=50g

Percent by mass of sugar= 2.5÷50×100

=5℅

So the percent by mass of water =100-5=95℅

Percent of sugar=5℅and per. Of water=95℅

Answer 2

Explanation:

Dear Student

Mass of Sugar, C12H22O11 = 2.5 gm

Mass of Water, H2O = 47.5 gm

Concentration of Sugar as percent by mass = ???

Therefore, Mass of Solution = Mass of (Sugar water ) = (2.5 + 47.5) gm = 50 gm

So, the concentration of sugar % by mass = Mass of SugarMass of Solution x 100%

= (2.5 gm50 gm) x 100% = 0.05 x 100% = 5 %

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