An insulated beaker with negligible mass contains 0.310 kg of water at a temperature of 70.5°C. How many kilograms of ice at a temperature of −20.0°C must be dropped into the water to make the final...

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An insulated beaker with negligible mass contains 0.310 kg of water at a temperature of 70.5°C. How many kilograms of ice at a temperature of −20.0°C must be dropped into the water to make the final...

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