Chemistry Equations

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10 Terms

1
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Relative abundance mass

Relative abundance mass = total mass of 100 atoms/100

2
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number of moles

number of moles = mass (g)/ relative formula mass (mr)

3
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equation involving; mass, mr and moles

mass = moles x mr

4
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number of particals

number of particals = moles x 6.02 × 10²³ mol^-1

5
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concentration (g/dm³)

concentration(g/dm³)= mass(g)/volume (dm³)

6
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PERCENTAGE YIELD

percentage yield= (mass of product actually made/ max theoretical mass of product) x 100

7
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gas volume

gas volume= moles x 24dm³

8
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ATOM ECONOMY

atom economy=(mr of desired product/ £mr of all reactants) x100

9
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cm³ → dm³

divide by 1,000

10
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dm³ → cm³

x 1,000