Be careful when reading the question. tricky questions question 1: If a system does 72 kJ...

Question

Question

Be careful when reading the question. tricky questions

question 1: If a system does 72 kJ of work and receives 13 kJ of heat, what is the value of ΔU for this change?

a. +59 kJ

b. -85 kJ

c. -59 kJ

d. +85 kJ

question 2: If a system absorbs 65 kJ of heat and does 32 kJ of work, what is the value of ΔU for this change?

a. -33 kJ

b. +97 kJ

c. +33 kJ

d. -97 kJ

question 3: If a system does 45 J of work and receives 28 J of heat, what is the value of ΔU for this change?

a. +17 J

b. -73 J

c. +73 J

d. -17 J

Answer 1

Answer #1

Answer 2

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