Register
A sample 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 ∆E?
24.8k views
1 vote
A sample 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 ∆E?

User Renie
by
4.6k points

1 Answer

2 votes

Answer:

-2.35 kJ

Step-by-step explanation:

The energy change of the NI3 sample, ΔE = Q + W. where Q = quantity of heat and W = workdone. After decomposing to form nitrogen gas and iodine gas, 3.30 kJ of heat is released, Q = -3.30 kJ and since the sample does work of 950 J, W = +950 J = + 0.950 kJ.

ΔE = Q + W = -3.30 kJ + (+ 0.950 kJ) = -3.30 kJ + 0.950 kJ = -2.35 kJ

User Mvo
by
4.9k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.2m questions

6.7m answers

Other Questions

A space shuttle is approaching the surface of the moon to land. It approaches the moons surface with an initial velocity of 28m/s and is slowing at a rate of -2m/s^2. Show all work and units for problems.
________ is a measure of the internal energy that has been absorbed or transferred from one body to another, often due to a difference in temperature.
5. What happens to the arrangement of water molecules as ice melts? A Molecules gain enough energy to escape as vapor. B Molecules release enough energy to escape as vapor. C Molecules gain enough energy
A projectline is shot from the edge of a cliff 100 m above the ground with intial speed 10 m/s at an angle 30 with the horizontal. 1) determine the time taken by the projectile motion to hit the ground
You’re on a team performing a high-magnetic-field experiment. A conducting bar carrying 4.1 kA will pass through a 1.3-m-long region containing a 12-T magnetic field, making a 60° angle with the field.
Link Copied!