Module 1 - 1.1.2 Moles and Equations Flashcards
1
Q
What is a mole?
A
One mole of a substance is the amount of the substance that has the same number of particles as 12.0000g of Carbon- 12.
2
Q
How many particles are in a mole?
A
6.02 x 10^23 - Avogadro’s Constant
3
Q
Number of moles =
A
Number of particles you have DIVIDED BY Number of particles in a mole (6.02 x 10^23)
4
Q
Molar mass x Number of moles =
A
Mass of substance.
5
Q
How do you find the volume (dm^3) of a gas at room temperature and pressure?
A
Number of moles x 24
6
Q
What is an empirical formula?
A
The simplest whole number ratio of atoms in a compound.
7
Q
What is the molecular formula?
A
This formula shows the actual amount of atom in a molecule e.g Decadane = C(10)H(22)
8
Q
Name all four state symbols.
A
(s) - solid
(l) - liquid
(g) - gas
(aq) - aqueous (a solution in water).
