This problem does involves calculations and you have to enter the required answers in the text box.  Email to steven.han@chaffey.edu ONLY 6 hours after submitting your exam the supporting work including calculations of how you arrived at your answer.  If no work is provided within the time frame, you will earn no more than 10% the value of the question.  No exceptions.   A 6.25 mol sample of Kr has a pressure of 1.21 atm and a temperature of 34°C. What is its volume? Ideal Gas Law = PV = nRT and R = 0.08206 L atm/mol K In the textbox, provide the final answer in Liters and submit work to the email above.

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