chemistry

1) If 358 g of KNO3 are dissolved in 650 mL of water at 80°C, at what temperature will solid settle out when it is cooled?

2) Give 2 ways, quantitatively, that a solution of 80 g of NaNO3 in 100 mL of water at 70°C can be made saturated.

3) If 100 g of KClO3 is dissolved in 500 g of water at 80°C, how much more salt must be added to make the solution saturated?

4) a. If a solution containing 40.0 g of KNO3 in 100 g of water at 100°C is cooled to 25°C, how much of the solid will settle out?

b. If you poured out half of the solution in (a) at 100°C, how many grams of the solid will the remaining solution contain?

c. If instead of pouring out as in (b), you boil away 50 mL of water and return the to 25°C, how many grams of solid will now remain in the solution?

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  1. And have you given these a try?

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    bobpursley
  2. yes. and the only one I am stuck on is 4

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  3. Can someone help answer those questions pls

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