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## Homework Statement

Two large reservoirs, H and C, are available: if H is at 900 K and C is at 300 K, what is the

entropy change of the Universe if 100 J of heat are taken from H and added to C?

## Homework Equations

ΔS=∫dQ/T

ΔS_universe = ΔS_surroundings + ΔS_system

## The Attempt at a Solution

so it's just (-100/900)+(100/300) = 9/2 right? Just checking!

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