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Paraphin [41]
3 years ago
13

A cylinder and piston assembly (defined as the system) is warmed by an external flame. The contents of the cylinder expand, doin

g work on the surroundings by pushing the piston outward against the external pressure. If the system absorbs 533 J of heat and does 488 J of work during the expansion, what is the value of ΔE? Express the energy change as an integer and include the appropriate units.
Chemistry
1 answer:
LiRa [457]3 years ago
4 0

Answer:

The energy change for the given system: <u>ΔE  = 45 J</u>

Explanation:

According to the<u> First Law of thermodynamics</u>, the energy can't be created or destroyed and can only be converted into other forms.

ΔE = Q - W                                 ......equation 1

Given: ΔE is the change in the internal energy

Q is the heat absorbed by the system

W is the work done by the system

<u>Given</u>: Q = = 533 J, W = 488 J, ΔE = ?

Using equation 1, to calculate the change is the internal energy (ΔE),

ΔE = Q - W = 533 J - 488 J = 45 J

<u>Therefore, the energy change for the given system: ΔE  = 45 J</u>

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