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Heating and Cooling Curves

Q. How much energy (kJ) is required to convert a 15.5 g ice cube at -5.00˚C to liquid water at 90.0˚C?

Solved • May 1, 2019

Heating and Cooling Curves

Q. calculate the minimum number of grams of propane, C3H8(g), that must be combusted to provide the energy necessary to convert 4.25 kg of ice at -21.5 ∘C to liquid water at 74.5 ∘C.

Solved • Apr 28, 2019

Heating and Cooling Curves

Q. liquid carbon disulfide reacts with oxygen gas to produce carbon dioxide and sulfur dioxide. how many gram of ice at 0C can be melted by the reaction of 8.44*10^24 molecules of carbon disulfide

Solved • Apr 5, 2019

Heating and Cooling Curves

Q. When 21.0 g of ethanol at –62˚C is heated and completely vaporized at 78˚C, how much energy, in kilojoules, is required?

Solved • Mar 27, 2019

Heating and Cooling Curves

Q. Based on the thermodynamic properties provided for water, determine the energy change when the temperature of 0.350 kg of water decreased from 123 °C to 19.5 °C.

Solved • Mar 5, 2019

Heating and Cooling Curves

Q. How much heat energy, in kilojoules, is required to convert 60.0 g of ice at −18.0 ∘C to water at 25.0 ∘C ?

Solved • Jan 17, 2018

Heating and Cooling Curves

Q. How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0 ∘C, to steam at 115 ∘C. The heat capacity of ice is 2.09 J/(g⋅∘C) and that of steam is 1.84 J/(g⋅∘C).

Solved • Nov 2, 2017