Which of the following statements best compares nuclear power and hydropower based on their rates of renewal?
A. Hydropower has a faster rate because water is continuously being recycled through the hydrogeological cycle.
B. Nuclear power has a faster rate because all elements are spontaneously radioactive and are a source of nuclear energy.
C. Hydropower has a slower rate because a large volume of water vapor that evaporates takes several years to return to water cycle.
D. Nuclear power has a slower rate because the nuclear waste produced is not radioactive and thus cannot be used further as a fuel.
*** I know the answer is not D***
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Ответ:
C
Explanation:
Ответ:
1. b
2. c
3. a
Explanation: A chemical reaction in equilibrium is actually in a dynamic euqilibrium, which means that changing a condition will make the equilibrium move to counteract the action and reestate the equilibrium.
For example, in the reaction:
N2(g) + 3H2(g) ⇄ 2NH3(g)
1. Adding H2: if you add the reagent, to reestate the equilibrium, the reaction will produce more products so, it will move to the right;
2. A catalyst doesn't interfere in the equilibrium, because it moves to the right and to the left at the same extent. Therefore, there is no effect.
3. Decrease the pressure: when you decrease the pressure of a reaction, the equilibrium will make the pressure increase again by moving towards the side of the reaction which has more molecules, so, it shifts to the left;