She noticed a particular landform reaching from Florida all the way up to Massachusetts. What type of landform is this? A. plateau
B. sand dunes
C. coastal plain
D. delta

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?