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Q 1/15
Score 0
A hot object is placed into a beaker of cold water, which of the following is true...
60
heat is transferred from the water to the object until the reach the same temperature
heat is transferred from the object to the water until they reach the same temperature
heat is transferred from the object to the water until their change in temperature is the same
heat is transferred from the water to the object until their change in temperature is the same
Q 2/15
Score 0
In the q = m C delta T equation, the m stands for
30
molarity
moles
mass
volume
15 questions
Q.
A hot object is placed into a beaker of cold water, which of the following is true...
1
60 sec
Q.
In the q = m C delta T equation, the m stands for
2
30 sec
Q.
If you preform a chemical reaction, why/how do you get a q?
3
60 sec
Q.
How is q different than delta H?
4
60 sec
Q.
If a student is doing a reaction in a test tube, and the test tube starts to feel cold, the reaction is...
5
60 sec
Q.
For the reaction: 34kJ + N2 + 3H2 --> 2NH3, the reaction is
6
60 sec
Q.
For the reaction, CH4 + 2O2 ---> CO2 + 2H2O the delta H is -50kJ/mol. If four moles of oxygen react, how much heat would be released?
7
60 sec
Q.
For the reaction, CH4 + 2O2 --> CO2 + 2H2O the delta H is -50kJ/mol. If you want the reaction to produce 200 kJ of heat, how many moles of CH4 should you react with excess O2?
8
60 sec
Q.
If CH4 + 2O2 --> CO2 + 2H2O has a delta H of -50kJ/mol. What would be the delta H for this reaction: 3CO2 + 6 H2O --> 3CH4 + 6 O2
9
60 sec
Q.
For the reaction, N2(g) + 3H2(g) --> 2NH3(g), predict the sign of the delta S.
10
60 sec
Q.
Which of the following values is zero for elements and diatomics
11
60 sec
Q.
Nature favors
12
60 sec
Q.
For a reaction to be spontaneous, you need which sign
13
60 sec
Q.
A reaction has a positive delta H and a negative delta S, when will this reaction be spontaneous?
14
60 sec
Q.
A reaction has a delta H of +50.0 kJ/mol, a delta S of +130J/mol K. At 298 Kelvin, will this reaction be spontaneous?
