Converting Moles to Grams (Leaving Cert Chemistry): Flashcards

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Converting Moles to Grams
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Mass of 1 mole of an element in grams

Equals its relative atomic mass

Formula: moles to grams for elements

Mass=Relative atomic mass×moles\text{Mass} = \text{Relative atomic mass} \times \text{moles}

Formula: moles to grams for compounds

Mass=Relative molecular mass×moles\text{Mass} = \text{Relative molecular mass} \times \text{moles}

Molar mass definition

Mass of one mole of a substance, expressed in g mol⁻¹

Number of particles in 1 mole

6.02×10236.02 \times 10^{23}

Mass of 1 mole of carbon (g)

12.01 g

First step for compound mole-to-gram conversion

Calculate relative molecular mass

Molar mass of an element equals

Its relative atomic mass

Molar mass of a compound equals

Its relative molecular mass

What to include in hydrated compound mass calculations

Mass of water molecules

Relative molecular mass of H₂O

18.016

Units of molar mass

g mol⁻¹

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