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GCSE OCR Chemistry > C4C5C6 Formulas > Flashcards

C4C5C6 Formulas Flashcards

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1
Q

What is the formula for calculating the percentage of metal in a mineral?

A

Percentage of metal in mineral = Total mass of metal atoms/Gram formula mass * 100%.

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2
Q

How do you calculate the mass of a metal that can be extracted from a mineral?

A

Work out the mass of the metal in grams that can be extracted from 1 gram formula mass.

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3
Q

What is the gram formula mass?

A

The relative formula mass in grams (e.g: H2O is 18g).

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4
Q

What is percentage yield?

A

% yield = Actual yield/Theoretical yield * 100.

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5
Q

What is the formula for percentage purity?

A

% purity = Actual mass of pure substance / Mass of impure substance * 100.

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GCSE OCR Chemistry (11 decks)

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