240 g of water at 20c are mixed with a sample of iron at


84g of water at 22'C are mixed with 150 g of ethanol at 88'C. Find the final temperature

24 g of sodium chloride at 25'C are mixed with 272 g of mercury at 50'C. Find the final temperature of the system.

240 g of water at 20'C are mixed with a sample of iron at 500'C. The final temperature of the system is 42'C. Find the mass of the iron sample.

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Chemistry: 240 g of water at 20c are mixed with a sample of iron at
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