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There are 270 Calories in a Hershey's® Milk Chocolate bar. The following data might be useful:...

There are 270 Calories in a Hershey's® Milk Chocolate bar. The following data might be useful: ΔHvap = 43.9 kJ/mol, ΔHfusion = 6.02 kJ/mol, ΔHsublimation = 49.9 kJ/mol, specific heat of ice = 2.05 J g-1°C-1, specific heat of water = 4.18 J g-1°C-1, and specific heat of steam = 2.08 J g-1°C-1. Assume the specific heat of water does not change with temperature. (Density of ice = 0.920 g/mL).

How much energy is used up at each step of the heating, including heating the solid, melting, heating the liquid, and vaporization?

If all of the energy in the bar were used to heat up 75.0 mL of ice at -25.0 °C, how hot would the water get?

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