Topic C3 Quantitative Chemistry Flashcards
1
Q
What is relative atomic mass ?
A
The average mass of an atom eg Cu 63.5
2
Q
What is relative formula mass ?
A
The sum of relative formula mass eg Li20
3
Q
What is a mole ?
A
A unit which represents a large fixed number of atoms
4
Q
What is the equation for number of moles ?
A
Number of moles = Mass / mass of 1 mole
5
Q
What is the equation for percentage yield ?
A
Percentage yield = Actual yield / predicted yield
6
Q
What is percentage yield ?
A
It is a way of comparing the amount of product to the amount expected
7
Q
What is the unit for concentration ?
A
Mol dm-3
8
Q
What is the equation for number of moles in terms of concentration ?
A
Number of moles = volume x concentration
9
Q
What is the equation for volume ?
A
Volume = Number of moles x 24
