What are the half-reactions for a galvanic cell with Zn and Mg electrodes?
A. Zn(s) → Zn2+(aq) + 2e and Mg(s) → Mg2+(aq) + 2e
B. Zn(s) → Zn2+(aq) + 2e and Mg2+(aq) + 2e Mg(s)
O C. Zn2+(aq) + 2e → Zn(s) and Mg2+(aq) + 2e → Mg(s)
D. Zn2+ (aq) + 2e → Zn(s) and Mg(s) → Mg2+(aq) + 2e

Can someone me with these questions plz.

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains