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Calculate the change internal energy (?E) for a system that is giving off 45.0 kJ of heat and is performing 855 J of work on the surroundings.
A. 9.00 x 102 kJ
B. -9.00 x 102 kJ
C. -44.1 kJ
D. -45.9 kJ
E. 44.1 kJ
Select a suitable substance to be sealed within the vial. (b) Within less than 10% error, what magnitude of pressures must the vial withstand?
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portion of that solution is diluted by adding 165 mL of water. What is the final concentration? Assume the volumes are additive.
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