June 2019Chemistry Regents #55-57
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Other Regents Exams
Base your answers to questions 55-57
At 23oC, 85.0 grams of NaNO3(s) are dissolved in
100. grams of H2O (l).|
55. Convert the temperature of the
NaNO3(s) to kelvins.
56. Based on Table G, determine the additional
mass of NaNO3(s) that must be dissolved to saturate the
solution at 23oC.
|Answer--> 5 g
(anything between 4 and 6 was ok)|
57. State what happens to the boiling point and
freezing point of the solution when the solution is diluted with an
addition of 100. grams of H2O(l).
|Answer-->***This is the trap
boiling point deceases, freezing point increases
adding the water has the opposite effect of adding the solute
e F halides
see Table F halides