Instructions: Choose one answer from each pair of selections. If the air pressure were to increase, the height of the column in a mercury barometer would INCREASE | DECREASE
INCREASE
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What element is behaves as the oxidizing agent in the following equation and what element behaves as the reducing agent? Sn2+ + 2 Ag ? Sn + 2 Ag?
A. The tin ion, Sn2+, is the oxidizing agent, while silver, Ag, is the reducing agent. B. The tin, Sn, is the reducing agent, while silver ion, Ag?, is the oxidizing agent. C. The tin ion, Sn2+, is the reducing agent, while silver, Ag, is the oxidizing agent. D. The tin, Sn, is the oxidizing agent, while silver ion, Ag?, is the reducing agent.
Before the Columbian Exchange, the potato was only available in
) Ireland B) Russia. C) Peru. D) Indonesia. E) Ethiopia.
Which of the following instruments most likely contains alcohol?
A. minimum thermometer B. maximum thermometer C. bimetallic thermometer D. thermograph
The main source of energy in main-sequence stars is ________.
A. fusion of hydrogen to helium B. the triple alpha process C. gravity D. chemical reaction between hydrogen and helium