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59.    Which of the following is inapplicable to the homework on P3s involving the SR-91 project? 

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

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.   15.0 mL of 3.0M HCl is used and sufficient water was added for the new total volume of the resulted dilution solution is 250.0 mL. What volume of water is needed to perform this dilution?  What is the new molarity of this diluted solution? In the textbox provided, provide the new molarity and volume of water needed.   Dilution EQUATION: M1V1 = M2V2 

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.

Read each statement and determine which statement(s) are correct.  NOTE: There may be more than 1 right answer.   Each statement is related to 1.0M NaCl aqueous solution.  

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?

Heavier gases diffuse slower and effuses faster.

A sample of a gas has an initial volume of 34.8 L and an initial temperature of −67°C. What must be the temperature (in Celsius( of the gas for its volume to be 25.0 L?

Place the following substances in order of increasing boiling point.  Consider polarity, chain length and intermolecular forces as part of your placement. CCl4 (carbon tetrachloride), H2O (water), CH2Cl2 (methylene chloride), CH4  methane), HOCH2CH2OH (ethylene glycol)

Which gas will mix/diffuse with air the fastest?