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Chemistry

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Brielle Cruickshank

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2y ago
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Cards in this guide (14)
How does a gas do work

By changing volume

Alyssa R. =]

Solid metals undergo greater thermal expansion than liquids do

false

What is the efficiency of a car's engine when the heat input is 100000 joules and the waste heat is 75000 joules

25 percent

Is Thermodynamics the study of the relationships among heat work and other forms of energy

Yes this is correct.

"Thermodynamics is the study of the relationships among heat, work and other forms of energy."

If 800 joules of heat are added to a gas in an isochoric process what is the change in its internal energy

800j

What is the balance chemical equation for the first law of thermodynamics

There is no chemical equation for the first law of thermodynamics, which is that energy can be neither created nor destroyed. This is a more general principle than any chemical equation.

How do you get warm after exercise

After you exercise, your body will already be warm, but you may be perspiring and your skin may become cold. Wrap yourself with loose towels or clothing to keep warmer air next to your skin. Becoming chilled after exercise is not healthy.

It isn't possible to transfer heat from an object at a lower temperature to another object at a higher temperature unless

It isn't possible to transfer heat from an object at a lower temperature to another object at higher temperature unless work is done to the system. An example of this is a refrigerator.

How does water pressure affect a submarine

When a submarine goes farther down in the water, the water pressure becomes greater. If the submarine goes to far, pipes can explode and let in water, or it can implode the submarine

Which of the following is not a valid equation for describing the behavior for gases

The question is incomplete.

No options (for which of the following) are given to answer the question.

Which temperature would it take the longest for someone is wearing cologne to reach you

-30c

What is the equation of the change in thermal energy

Integral from initial to final of the internal energy or integral from initial to final of the enthalpy.

The change that takes place when two or more substances what to form new substances is called a chemical reaction

(Apex) interact

Is the molar mass of gas dependant on the type of gas

Yes as is the molar mass of anything else.

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