# Amount of Substance

Theory of Ideal Gas
Particles move in continous random motion, no reactions take place when they collide. The collisions are completely elastic becuase there are no intermolecular forces.
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Ideal gas equation
pV=nRT
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R=
Ideal gas constant: 8.31 J/K/mol
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Boyle's Law
At a constant temperature and moles as pressure increases, volume decreases.
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Charles' Law
At a constant pressure, the volume of a fixed mass of gas is proportional to its temperature.
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Room temperature in K
298
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Atmospheric pressure in Pa
100,000
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Number of particles
Numbers of moles x Avogadro's constant
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6.02 x 10
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moles=
mass/mr
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moles=
concentration x volume
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Matter is neither created or destroyed
The ratios in which species react correspond to moles, not mass.
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percentage yield
actual yield/theoretical yield x 100
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atom economy
mass of useful product/ mass of all reactants ( x 100)
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A solution is a (1) mixture of two or more substances in which the (2) of the substances are (3) throughout the mixture.
1. homogenous 2. proportions 3. identical
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Molarity (M) is...
the number of moles of solute in 1dm of solvent (mol dm )
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Solutions containing a (1) mass of solute in a (2) volume of solutions are called (3).
1.2. precise 3. standard solutionns
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An empirical formula is...
the simplest ratios of atoms of each element in a compound
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A molecular formula is...
the actual number of atoms found in each element in a compound.
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The molar mass is...
the mass of one mole of a substance.
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## Other cards in this set

### Card 2

#### Front

Ideal gas equation

pV=nRT

R=

Boyle's Law

Charles' Law