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Chemistry

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Sierra Flatley

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Cards in this guide (12)
You can smell a burning scented candle across a room because

the gas molecules move about the room

At 25oC three moles of a gas occupy a volume of 4.0 L at 1.9 kPa If the volume decreases to 2.0 L what will the new pressure be

3.8 kPa

A device that absorbs and draws heat from a hot object dispersing it into the surroundings is which one of the following

Heat sink

Entropy is the measure of the amount of disorder in a system

true

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."

With which below would Ronald Reagan most likey have agreed

radda

Molecular mass equals 2vapour density

vapor density =density of gas/density of hydrogen gas

=mass of a certain vol. of gas/mass of same vol. of hydrogen gas

=mass of n molecules of gas/mass of n molecules of hydrogen gas

=mass of 1 molecule of gas/mass of 1 molecule of hydrogen gas

=molecular mass of gas/molecular mass of hydrogen gas

=molecular mass/2

2 x vapor density=molecular mass
According to Charles s law if the temperature of a gas decreases the volume

decreases

Apex

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.

What is true about an isochoric process

Its a constant volume

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

-30c

What is a 6.022 x 10 23 objects

mole is the correct answer (apex)

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