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Amount of substance

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

What is the formula and charge on Sulfate

Back (Answer)

Sulfate SO42-

#2
Front (Question)

What is the formula and charge on Nitrate

Back (Answer)

Nitrate NO3-

#3
Front (Question)

What is the formula and charge on Carbonate

Back (Answer)

Carbonate CO32-

#4
Front (Question)

What is the formula and charge on Hydroxide

Back (Answer)

Hydroxide OH-

#5
Front (Question)

What is the formula and charge on Ammonium

Back (Answer)

Ammonium NH4+

#6
Front (Question)

What is the formula of Water

Back (Answer)

Water H2O

#7
Front (Question)

What is the formula of Methane

Back (Answer)

Methane CH4

#8
Front (Question)

What is the formula of Ammonia

Back (Answer)

Ammonia NH3

#9
Front (Question)

What is the formula of Hydrogen peroxide

Back (Answer)

Hydrogen peroxide H2O2

#10
Front (Question)

What is meant by empirical formula

Back (Answer)

Empirical formula – the simplest whole number ratio of the atoms of each element in a compound.

#11
Front (Question)

What is meant by molecular formula

Back (Answer)

Molecular formula – the actual number of atoms of each element in one molecule of the substance.

#12
Front (Question)

What is meant by ionic equation.

Back (Answer)

Ionic equation – shows only the substances (can be covalent) taking part and being made in the reaction.

#13
Front (Question)

What is meant by spectator ions

Back (Answer)

Spectator ions - Ions which do not take part in the reaction.

#14
Front (Question)

What is meant by the mole

Back (Answer)

The mole – the amount of a substance that contains the number of particles equal to the Avogadro constant.

#15
Front (Question)

What is meant by relative formula mass RFM

Back (Answer)

Relative formula mass RFM– The total of the relative molecular mass (Mr).

#16
Front (Question)

What is meant by molar mass

Back (Answer)

Molar mass – the mass of 1 mole.

#17
Front (Question)

What is meant by avogadro constant

Back (Answer)

Avogadro constant – the number of particles in one mole.

#18
Front (Question)

What is meant by theoretical yield

Back (Answer)

Theoretical yield – The amount in moles or mass you would expect to be produced if the reaction goes to completion.

#19
Front (Question)

What is meant by actual yield

Back (Answer)

Actual yield – The amount in moles or mass you obtain experimentally.

#20
Front (Question)

What is meant by standard solution

Back (Answer)

Standard solution – a solution of a known concentration.

#21
Front (Question)

Why you don’t get 100% yield

Back (Answer)

Loss from transferring between containers

#22
Front (Question)

How do you calculate empirical formula

Back (Answer)

Write out the mass of the elements.

#23
Front (Question)

How do you do a reacting mass calculation?

Back (Answer)

• Calculate the number of moles by dividing the mass by the Mr.

#24
Front (Question)

How do you make a standard solution?

Back (Answer)

Weigh out accurately the mass of your solid.