What does the expression “75 meters per second southeast” best describe?

Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Which position represents spring in the southern hemisphere? a) b) c) d)