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Chemistry > Relative Molecular mass and Empirical Formulae > Flashcards

Relative Molecular mass and Empirical Formulae Flashcards

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1
Q

How do you calculate the Mr (relative molecular mass) of a compound?

A

Add the relative atomic mass of both elements together

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2
Q

How do you find the Empirical formula of a

compound?

A

Simplify the whole number ratio of the atoms

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3
Q

What is the Empirical formula of C6H1206 AND P4O6

A

CH2O, P2O3

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4
Q

How do you calculate the empirical formula

A
  1. divide each mass/percentage by the relative atomic mass for that element
  2. divide the values by the smallest
  3. round to the whole number and use it to find the formula
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5
Q

What is the empirical formula: 23.3% magnesium, 30.7% sulphur, 46.0% oxygen?

A

MgSO3

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Chemistry (13 decks)

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