#1: which of the following is the abbreviation for a unit of energy? a. k / b. °c/ c. w / d. #2: a 200 g block of a substance requires 1.84 kj of heat to raise its temperature from 25°c to 45°c. use the table attached to identify the substance. a. iron/ b. aluminum/ c. gold/ d. #3: in a calorimeter, the temperature of 100 g of water decreased by 10°c when 10 g of ice melted. how much heat was absorbed by the ice? a. 418 kj / b. 100 kj / c. 10 j / d. 4.18 kj #4: the amount of heat needed to raise the temperature of 50 g of a substance by 15°c is 1.83 kj. what is the specific heat of the substance? a. 2.44 j/g-°c / b. 2.22 j/g-°c / c. 2.13 j/g-°c / d. 2.05 j/g-°c #5: in a calorimeter, 3.34 kj of heat was absorbed when 10 g of ice melted. what is the enthalpy of fusion of the ice? a. 6.68 j/g / b. 334 j/g / c. 6.68 kj/g/ d. 334 kj/g
Answers: 2
Chemistry, 22.06.2019 22:20
Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?
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Chemistry, 22.06.2019 23:00
How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.
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Chemistry, 23.06.2019 01:00
Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released
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Chemistry, 23.06.2019 04:31
How many grams of iron can be made from 16.5 grams of fe2o3
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#1: which of the following is the abbreviation for a unit of energy? a. k / b. °c/ c. w / d. #2:...
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