Find the volume of a gas at STP  (in L) when 2.00 liters is collected at 745.0 mm Hg and 25.0 degrees Celsius.

A balloon contains 7.20 L of He. The pressure is reduced to 2.00 atm and the balloon expands to occupy a volume of 25.2 L. What was the initial pressure exerted on the balloon?

Absolute zero means molecular motion ceases where T = 0K.

Absolute zero means molecular motion ceases where T = 0K.

Acid rain is a mixture of sulfur and nitrogen oxides that results in an acidic solution.

Which gas will be expected to have the second smallest density from the gases listed here (in g/L) at STP?  NOTE: 1 mol at STP = 22.4 L

10.  Which professional disposition is essential for early childhood educators?

Match the following composers and their Title

music 5.mp3

Tchaikovsky is well-known for his Ballet writing, what is the name of the famous tune above?