Question

The first law of thermodynamics relates the heat transfer into or out of a system to the change of internal and the work done on the system.

How much heat, in joules, is transferred into a system when its internal energy decreases by 155 J while it was performing 29 J of work?

Answer 1

Answer:

184 J

Explanation:

So the first law of thermodynamics relates the heat transfer into or out of a system to the change of internal and the work done on the system. Therefore, the heat transfer into the system when internal energy decreases by 155J while performing 29J of work is the sum of energy, which is

155 + 29 = 184 J

Answer 2

The heat that's transferred into the system will be 184J.

According to the first law of thermodynamics, heat transfer is related to the change of internal and work done on the system. This can be illustrated through the equation:

∆U = Q - W

where,

• ∆U - change in internal energy
• Q - heat transferred into the system
• W - work done by the system.

Therefore, ∆U = Q - W

155 = Q - 29

Q = 155 + 29

Q = 184

Therefore, the heat that's transferred into the system will be 184J.

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