Section 3 - Equations, Calculations, Electrolysis

Question 1

moles for

Answer 1

moles=mass/mr

Question 2

percentage yield for

Answer 2

actual yield (gr)/theoretical yield (gr)

Question 3

empirical formula

Answer 3

1. list all the elements in the compound
2. write their experimental masses
3. find the moles of each element
4. turn numbers into ratio by dividing by smaller number of moles
5. put it in the simplest whole number

Question 4

molecular formula

Answer 4

1. find mass of empirical formula
2. relative atomic mass/total mass = Y
3. molecular formula = empirical formula x Y