C4C5C6 Formulas Flashcards
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%.
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.
3
Q
What is the gram formula mass?
A
The relative formula mass in grams (e.g: H2O is 18g).
4
Q
What is percentage yield?
A
% yield = Actual yield/Theoretical yield * 100.
5
Q
What is the formula for percentage purity?
A
% purity = Actual mass of pure substance / Mass of impure substance * 100.