Please help with this physics question!?

In a physics lab experiment, a student immersed 210 one-cent coins (each having a mass of 3.00 g ) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.239 kg of water at 20.0 ∘C in an insulated container of negligible mass. Part A What was the final... show more In a physics lab experiment, a student immersed 210 one-cent coins (each having a mass of 3.00 g ) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.239 kg of water at 20.0 ∘C in an insulated container of negligible mass.

Part A
What was the final temperature of the coins? [One-cent coins are made of a metal alloy - mostly zinc - with a specific heat capacity of 390 J/(kg⋅K).]
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