What is the pressure of 2.0 mol nitrogen (N2) gas in a 0.5 L container at 310 K?
(The universal gas constant is 0.0821 L. atm/mol. K.)

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %