Slides in this set
What is a mole (description)?
· What is the value for a mole?
· If we had a mole of bananas, how many
bananas would we have?
· If we had a mole of carbon atoms, how many
atoms would we have?
· What is the mass of a mole of carbon atoms?…read more
To calculate the number of moles we need to
know the mass and the Mr (RAM):
Moles = Mass
Calculate the number of moles (to 2dp) in...
a. 13g of Na 0.57 moles
b. 26g of Mg 1.08 moles
c. 46g of Ca 2.3 moles…read more
Empirical formula is just the simplest whole
number ratio of atoms in a compound eg:
Benzene, C6H6 has the empirical formula CH.
If we know the percentages of each element
present then we can calculate the empirical