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You buy a bottle of water at the neighborhood 7-11 on a hot day when the ambient temperature is 32C (about 90F ). By the
You buy a bottle of water at the neighborhood 7-11 on a hot day when the ambient temperature is 32C (about 90F ). By the time you get home, the water in the unopened bottle has reached the ambient temperature of 32C. You want to cool off the water so you pour 325g of the water at 32C into a large plastic cup with negligible heat capacity. You want to add ice from the freezer and the temperature of the ice in the freezer is 5C. If you want the water in the cup to equilibrate to 4C, how many grams of ice from the freezer should you add to the cup with water? Here is some useful information. Specific heat of liquid water, c=4.184J/Kg Specific heat of ice, c=2.113J/Kg Enthalpy of melting for ice, H^ melting (icc)=6.01kJ/mol
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