Question 1(1 point)
The specific heat of a substance is the amount of energy required by the substance to change phase.Question 1 options:
SaveQuestion 2(2 points)
The energy content of a single serving of rice is 85.0 Cal. What is the energy content in calories?Question 2 options:
SaveQuestion 3(2 points)
A specimen weighing 100.0 g is heated from 30.00C to 63.30C. If the quantity of heat transferred is 5834 cal, determine the specific heat of the specimen.Question 3 options:
|17.25 cal/ gC|
|1.572 cal/ gC|
|12.75 cal/ gC|
|1.752 cal/ gC|
|1.257 cal/ gC|
SaveQuestion 4(1 point)
What is heat of fusion?Question 4 options:
|The heat required to change one gram of a liquid into vapor.|
|The heat released when one gram of a substance melts.|
|The heat released when one gram of vapor condenses to a liquid.|
|The heat required by one gram of a substance while melting.|
|The heat given of by one gram of a substance when it is heated.|
SaveQuestion 5(1 point)
In Charles's law, gas volume is directly related to the Celsius temperature.Question 5 options:
SaveQuestion 6(1 point)
Which of the following is true about solids?Question 6 options:
|They have weak intermolecular interactions.|
|Their particles are not in contact with each other.|
|They have an indefinite volume.|
|They have moderate intermolecular interactions.|
|They have a definite shape.|
SaveQuestion 7(1 point)
Which of the following is true about gases?Question 7 options:
|They have a definite shape.|
|Their particles are in close contact with each other.|
|They have no definite volume.|
|They take the shape of the bottom of the container.|
|They have strong intermolecular interactions.|
SaveQuestion 8(2 points)
If a sample of gas has an initial pressure of 2.36 atm and an initial volume of 10.7 L, what is the final pressure if the volume is reduced to 4.09 L? Assume that the amount and the temperature of the gas remain constant.Question 8 options:
SaveQuestion 9(2 points)
Given the following conditions for a gas:Ti= 27C,Vi= 1,260 cm3,Vf= 12.60 L. What isTf?Question 9 options:
SaveQuestion 10(2 points)
A walrus can draw in about 0.00350 m3of air in a single breath. If the air warms to 47C, the new volume of the air drawn in is 4,390 mL. Determine the initial temperature of the air drawn in. Assume that the pressure and amount of the gas remain constant.Question 10 options:
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Sep 13, 2020EXPERT
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