Chemistry

What is the moles equation for moles of a solid?

Moles=mass/Mr

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What is the moles equation for moles in a liquid?

Moles = conc. x vol(dm^3)

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How many particles are there in a mole?

6.02x10^23 aka Avogadro's constant

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How many cm^3 are there in a dm^3

1000

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What is the ideal gas equation?

pV=nRT where n=number of moles

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What is a standard solution?

Any solution you know the exact concentration of

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What piece of equipment would you use to measure a set volume of an acid/alkali for a titration?

Pipette

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What is the end point of a titration?

The point where the indicator changes colour, enough acid to neutralise the alkali

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What does the empirical formula represent?

Smallest whole number ratio of atoms in a moecule

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What does the molecular formula represent?

Actual number of atoms in a molecule

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What is the theoretical yield?

The mass of product that should e formed in a chemical reation

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What is the formula for percentage yield?

actual yield/theoretical yield x100

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What is meant by atom economy?

A measure of the proportion of reactant atoms that become a part of the desired product

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What are the advantages from a process with high atom economy?

Better for environment, less expensive,

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What is the formula for calculating atom economy?

molecular mass of desired product/sum of molecular masses of all reactant x 100

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