Enthalpy

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Enthalpy Anonymous Mon Mar 11 22:19:38 2013 No.5602279 [Reply] [Original]

Solve these:
1. The specific heat capacity of silver is 0.235 J/g °C. Its melting point is 962 °C and its enthalpy of fusion is 104.8 J/g. What quantity of energy as heat is required to change 3.00 g of silver from a solid at 25°C to a liquid at 962°C?
2. How much energy would be needed to convert 10g of ice at -5°C to steam at 103°C?

>>	Anonymous Mon Mar 11 22:21:51 2013 No.5602282 Q=MCΔT

>>	Anonymous Mon Mar 11 22:23:21 2013 No.5602285 >>5602282 plus energy required to turn the solid silver to liquid

>>	Anonymous Mon Mar 11 22:23:21 2013 No.5602286 1) use heat capacity to calculate energy to raise temp 2) use enthalpy to calculate energy for phase change 3) Realize that if you still cant do this you're gonna get a D at best in thermo

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