Unit Test Answers

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2SO3(g) 2SO2(g) + O2(g)

Grind a metal into a fine powder.

The diagram to the right shows energy for two reactions, A and B.Which reaction has the higher Grxn?

Based on your experience, which reactions are likely to be self-sustaining? Check all that apply.

The diagram shows three Maxwell-Boltzmann frequency graphs.Which graph represents the system with the highest temperature?

Which graph represents the system with the lowest temperature?

Which condition will cause a reaction to occur? Check all that apply.

Based on this information, what is the most likely reason that refrigerating most foods reduces the rate at which they spoil?

Due to lower atmospheric pressure at high altitudes, water boils at 92°C instead of 100°C. How will this difference affect cooking times? How will it affect the time needed to boil spaghetti noodles as compared to the amount of time needed at sea level?

What concentration of hydrogen peroxide would cause this reaction to proceed most quickly?

Which action would most likely increase the reaction rate for this step?

N2(g) + 3H2(g) 2NH3(g)

Magnesium reacts with hydrochloric acid to form hydrogen gas and magnesium chloride:Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g)Which actions would increase the rate of reaction? Check all that apply.

Refrigerate food to keep it from spoiling.

Which reaction has the higher activation energy?

SnO2(s) + 2H2(g) Sn(s) + 2H2O(g)

Add inert water to a reaction solution.