Moles calculations

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Last updated 11:18 AM on 9/19/26
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15 Terms

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Concentration formula

Number of moles/ volume dm3

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How to convert dm3 to cm3

Multiply by 1000

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Number of moles of gas formula

Volume of gas (dm3) / 24dm3

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End point

When acid and alkali have fully reacted

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Titration

Used to measure exact volumes of acid and alkali needed to neutralise each other

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Concordant results

Results that are close together

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Molecular mass (Mr)

The sum of all the relative atomic masses of the atoms in a molecule

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Mole number

6.022 • 10²³

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Avogadro constant

The number of entities in one mole

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How to calculate mass

Number of moles • mass of 1 mole

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How to calculate number of moles

Mass/mass of 1 mole

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How to calculate mass of 1 mole

Mass/number of moles

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How to find emperical formula

Find number of moles of each element. Make elements a ratio by dividing my the smallest number

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Relative atomic mass

The average mass of an atom considering the amount of each isotope relative to 1/12 of C12

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How to find molecular formula

Real mass of an element/mass of empirical formula of an element