A sample of gas has a volume of 5.0 L when at a temperature of 320K and a pressure of 2 ATM. How many moles are there of this gas?

Agas in a balloon at constant pressure has a volume of 160 ml at -125*c. what is its volume at 29.0*c?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6