# AS Chemistry Calculations Help sheet.

Stuck with Calculations?

Mass = moles/MR

Moles = Vol * Conc

Vol = Moles * 24

Good luck in your exams next week :)

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• Created by: John
• Created on: 09-01-11 11:48

## Pages in this set

### Page 1

ABG: Moles equations

Relative atomic mass (Ar)

Ar= (mass Nr. isotope 1 X % isotope 1) + (mass Nr. isotope 2 x % isotope 2) +
.......
% isotope 1 + % isotope 2 +.......

Masses and moles

Moles = mass in g Mass = moles x Mr Mr =…

### Page 2

Volume = Moles x 24 Moles of gas = Volume (dm3)
of gas (dm3) 24

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# AS Chemistry Calculations Help sheet.

Stuck with Calculations?

Mass = moles/MR

Moles = Vol * Conc

Vol = Moles * 24

Good luck in your exams next week :)

• Created by: John
• Created on: 09-01-11 11:48

## Pages in this set

### Page 1

ABG: Moles equations

Relative atomic mass (Ar)

Ar= (mass Nr. isotope 1 X % isotope 1) + (mass Nr. isotope 2 x % isotope 2) +
.......
% isotope 1 + % isotope 2 +.......

Masses and moles

Moles = mass in g Mass = moles x Mr Mr =…

### Page 2

Volume = Moles x 24 Moles of gas = Volume (dm3)
of gas (dm3) 24