How do you do mass to mass stoichiometry problems?
1 Answer
I'm assuming you mean reacting masses - for example:
"Calculate the amount of
So first you need to write a balanced equation:
Then you need to divide the mass you are given by its molar mass, to find the number of moles that react, so..
Molar mass
Moles of
Then you need to multiply the number of moles of
Molar mass
Mass
If you have different stoichiometric ratios, it is simplest to multiply the molar mass by the coefficient first, so if you had a question, "Calculate the mass of
First write that balanced equation:
Then divide the moles of
Molar mass
Moles = 10 / (32 x 3) = 0.10417
Then multiply this number by the mass of
Molar mass
Mass