04 HeatCapacity&amp;EnthalpyChanges

# 04 - As a joke your friend puts your gold and silver necklaces in the freezer The gold necklace has a mass of 200 g and the silver necklace has a

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1 As a joke, your friend puts your gold and silver necklaces in the freezer. The gold necklace has a mass of 200 g, and the silver necklace has a mass of 75 g. If both start out at -10 o C when you put them on, and energy is transferred to them at the same rate, which will reach body temperature first? The specific heat capacities are 0.13 J g -1 o C -1 for gold, Au, and 0.24 J g -1 o C -1 for silver, Ag. A. Au because it has the smaller specific heat capacity. B. Ag because it has the larger specific heat capacity. C. Ag because it has the smaller mass. D. Ag because it has the smaller heat capacity. E. Au because it has the larger heat capacity. As a joke, your friend puts your gold and silver necklaces in the freezer. The gold necklace has a mass of 200 g , and the silver necklace has a mass of 75 g . If both start out at -10 o C when you put them on, and energy is transferred to them at the same rate, which will reach body temperature first? The specific heat capacities are 0.13 J g -1 o C -1 for gold and 0.24 J g -1 o C -1 for silver. time. q = m c s T Heat capacity Au = 26 J/ o C Heat capacity Ag = 18 J/ o C

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3 Hints to help with the online quiz! Changes of state problems : How much energy does it take to begin with 50 g of ice at -10 o C and end up with steam at 110 o C?
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## This note was uploaded on 02/13/2011 for the course CHE 132 taught by Professor Hanson during the Spring '08 term at SUNY Stony Brook.

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04 - As a joke your friend puts your gold and silver necklaces in the freezer The gold necklace has a mass of 200 g and the silver necklace has a

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