Asample of ni3 is contained in a piston and cylinder. the samples rapidly decomposes to form nitrogen gas and iodine gas, and releases 3.30 kj of heat and does
950 j of work. what is δe?

ΔE is -4250 J

Explanation:

Step1: Data given

3.30 kJ of heat is released

There is 950 J of work done

Step 2: Calculate ΔE

ΔE = q + w  

 ⇒ with q = heat of energy released = 3.3 kJ = 3300 J ( negative because the heat is released)

⇒ work done = 950 J ( also negative )

ΔE = -3300J-950J= -4250 J

ΔE is -4250 J

answer seismograph;