Chemistry, 20.06.2020 21:57 JoeAnthony3293
A student wishes to determine the heat capacity of a coffee-cup calorimeter. After she mixes 105.5 g of water at 65.8°C with 105.5 g of water, already in the calorimeter, at 22.0°C, the final temperature of the water is 35.0°C. Calculate the heat capacity of the calorimeter in J/K. Use 4.184 J/g°C as the specific heat of water. Enter your answer to three significant figures in unit of J/K.
Answers: 3
Chemistry, 22.06.2019 13:00
The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?
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Chemistry, 22.06.2019 18:10
Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
A student wishes to determine the heat capacity of a coffee-cup calorimeter. After she mixes 105.5 g...
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