Empirical formula example (Edexcel GCSE Chemistry Combined Science): Quizzes

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Empirical formula example
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What mass of magnesium was used in this empirical formula calculation?

1.921.92 g

What mass of chlorine was used in this example?

5.685.68 g

What is the relative atomic mass (ArAr) of magnesium?

2424

What is the relative atomic mass (ArAr) of chlorine?

35.535.5

How many moles of magnesium are present in this example?

0.080.08 moles

How many moles of chlorine are present in this example?

0.160.16 moles

What number should you divide by to simplify the ratio?

0.080.08

What is the simplified ratio for magnesium in this compound?

11

What is the simplified ratio for chlorine in this compound?

22

What is the empirical formula of this compound?

MgCl2MgCl_2

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The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

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The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

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The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

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The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

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