Lab: Measuring pH — Cumulative exam Answers
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According to Hess’s law, if a series of intermediate reactions are combined, the enthalpy change of the overall reaction is
A
the difference between the enthalpies of the intermediate reactions.B
the sum of the enthalpy changes of the intermediate reactions.C
the product of the enthalpy changes of the intermediate reactions.D
the fraction of the individual enthalpies of the intermediate reactions.42
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The equation below shows a reaction that produces calcium carbonate.Ca(OH)2(s) + CO2(g) CaCO3(s) + H2O(l)Which describes a way to speed up the collisions between calcium hydroxide and carbon dioxide molecules to produce calcium carbonate faster?
A
Lower the temperature.B
Use larger pieces of calcium hydroxide.C
Lower the pressure.D
Reduce the volume of the container.43
How many electrons can the n = 4 shell hold?
A
8B
16C
32D
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