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Monica [59]
3 years ago
13

A 20.0-g sample of sugar is dissolved in 59.8 g of water. What is the concentration of the solution?

Chemistry
2 answers:
Romashka-Z-Leto [24]3 years ago
4 0
The correct answer to the question is 25 percent by mass
Lorico [155]3 years ago
3 0
25 percent by Mass.
Hope this helps.
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Why is sodium more reactive than lithium​
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A 1.42-g sample of a pure compound with formula m2so4 was dissolved in water and treated with an ex- cess of aqueous calcium chl
solong [7]

The reaction between m_{2}SO_{4} with calcium chloride can be shown as-m_{2}SO_{4}+CaCl_{2}→CaSO_{4}↓+2mCl. The molecular weight of CaSO_{4} is 136.14g. The weight of sulfate ion is 96.06g. The molecular weight of m_{2}SO_{4} = (2×m + 96.06). From the reaction we can see that 1 mole of calcium chloride reacts with 1 molesm_{2}SO_{4} to produce 1 mole of calcium sulfate. Now 1.36g of calcium sulfate is equivalent to 1.36/136.14=9.989×10^{-3} moles of calcium sulfate.

Thus, 9.989×10^{-3} moles of m_{2}SO_{4} reacts in this reaction.

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So we may write 9.989×10^{-3}× (2x+96) =1.42

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