A system that does no work but which receives heat

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A system that does no work but which receives heat from the surroundings hasSelect one:a. q < 0, ΔU > 0.b. q > 0, ΔU < 0.c. q= ΔU.d. q= –ΔU.e. w= ΔU.The correct answer is: q= ΔU.
Graded Exam 28 of 154/20/2018, 7:30 AM
QuestionCorrect4.60 points outof 4.60Suppose a 0.500-g sample of an organic compound is analyzed via bomb calorimetry. Thetemperature of the calorimeter is measured over time. At t= 5 min, the combustion reaction isinitiated. Below is a plot of the data that are obtained.Suppose the experiment is repeated under identical conditions, but with a 1.000-g sample ofthe organic compound. What might a plot of the resulting data look like?Select one:
Graded Exam 29 of 154/20/2018, 7:30 AM
c. d. e. Graded Exam 210 of 154/20/2018, 7:30 AM
QuestionWhat is ΔH°for the following reaction?Correct4.60 points outof 4.60The correct answer is:
Select one:a. –1856.2 kJ/molb. –1372.6 kJ/molc. –47.0 kJ/mold. 82.1 kJ/mole. 530.6 kJ/molThe correct answer is: 82.1 kJ/molrxn242f242Graded Exam 211 of 154/20/2018, 7:30 AM
QuestionCorrect4.60 points outof 4.60Questionstate?Incorrect0.00 points outof 4.60The size of an atomic orbital is associated withSelect one:a. the principal quantum number (n).b. the angular momentum quantum number (l).c. the magnetic quantum number (m).d. the spin quantum number (m).e. the angular momentum and magnetic quantum numbers, together.The correct answer is: the principal quantum number (n).
Which of the following elements has the largest number of unpaired electrons in the groundstate?

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