I think is the Third one tbh sorry if that’s not right
5702.4 feet per sec
might want to cross check though
14) im not typing the whole thing but its C
15) magma that is low in silica
16) I honestly don't know this one my best guess would be B
Elements in the same group in the periodic table have similar chemical properties. This is because their atoms have the same number of electrons in the highest occupied energy level. Group 1 elements are reactive metals called the alkali metals. Group 0 elements are unreactive non-metals called the noble gases. Hope this helps you