The moles Flashcards
1
Q
What is a mole?
A
amount of substance.
2
Q
Define entities.
A
particles that make a substance eg atoms, ions or molecules.
3
Q
What is Avogadro’s constant?
A
6.02x10^23
4
Q
Formula to calculate a number of entities are…
A
Number of enteties=amount(mol)xavegardos constant
5
Q
Define molar mass.
A
The mass of 1 mole of a substance in grams.
6
Q
what is the molar mass of a substance?
A
Its relative atomic mass or relative formula mass.
7
Q
How do you measure the molar mass of a substance?
A
Find each element relative atomic mass and multiply it by the number of each element’s atoms and add them all up to get the relative formula mass which is the molar mass.
