Please help me What is the mass of 3 L of water vapor at 126 degrees Celsius and 381 torr?

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

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?

Which of the following molecules is polar? c3h7oh c2h5cooh