the SI unit of measurement for the amount of substance
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What is one mole defined as?
One mole is defined as the amount of substance that contains as many elementary entities as there are atoms in 12g of Carbon-12., known as Avegadro's constant.
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Avegadro's Constant
6.02x10^23
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What is the molar mass?
The molar mass of a substance is the mass of one mole of all of the substances.
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What is the Kinetic Theory of Matter?
The kinetic theory of matter is a model used to describe the behaviour of the atoms or molecules in an ideal gas.
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What is the assumption for an ideal gas relating to its size?
The gas contains a very large number of atoms or molecules moving in random directions with random speeds.
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What is the assumption for an ideal gas relating to its volume?
The atoms or molecules of the gas occupy a negligible volume compared to the volume of the gas.
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What is the assumption for an ideal gas relating to its collisions
The collisions of atoms or molecules with each other and the container walls are perfectly elastic - hence no KE is lost.
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What is the assumption for an ideal gas relating to the time of it's collisions?
The time of collisions between the atoms or molecules is negligible compared to the time between the collisions.
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What is the assumption for an ideal gas relating to forces?
Electrostatic forces between atoms or molecules are negligible, except during collisions.
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What is the change in momentum when a single atom collides with a container wall elastically?
-2mu
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Card 2
Front
What is one mole defined as?
Back
One mole is defined as the amount of substance that contains as many elementary entities as there are atoms in 12g of Carbon-12., known as Avegadro's constant.
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