In a battery, the following two oxidation-reduction reactions are taking place: rxn A: Zn ? Zn+2 + 2e- rxn B: 2 NH4+ + 2e- ? 2 NH3 + H2 Which reaction is taking place at the anode?
A) rxn A
B) rxn B
C) Both reactions are happening at both the anode and cathode.
D) Both reactions are happening at the electrode.
E) The reaction takes place at the electrode, not the anode.
A
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To human geographers, which of the following statements is NOT true? Culture
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Which of the following is true about how waves form and break upon the shore?
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Describe the factors influencing the weathering process
What will be an ideal response?
A parcel of air at the surface is heated which expands the air and increases the parcel's volume. If the same number of air molecules occupy the greater volume, density decreases. The increase in volume results in lower pressure. What will happen to the air surrounding this parcel?
A. Less dense air flows in to replace the rising air. B. Denser air flows in to replace the rising air. C. More dense air rises at the surface. D. Less dense air sinks at the surface.