Amount Of Substance And The Mole Flashcards
1
Q
Define Avagadro’s Constant
A
This is the number of particles in a mole.
2
Q
What is the Avagadro’s Constant (number)
A
6.02X10^23
3
Q
How do you find the mass of one mole of an element?
A
It is the relative atomic mass in grams.
4
Q
What is the unit for amount of substance?
A
It is measured in moles, mol.
5
Q
What is molar mass?
A
This is the mass in grams of each mole of the substance.
6
Q
How do you find the molar mass?
A
Add up the relative atomic masses of the elements in the compound.
7
Q
What are the units of molar mass?
A
g mol^-1
8
Q
What is the equation for moles, Mr and mass?
A
Moles =mass/Mr
