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I agree with Michelle, since we are supplying heat to a copper kettle, we are adding heat to our system, not to our surroundings. I don't think it counts as a system, but rather the boundary of the outer boundary of the system.
The kettle should be part of the system, which is why the kettle is included when calculating the heat that must be supplied. I guess if you think about it, the kettle must be heated first before the water can be heated.
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