"A student mixed two clear liquids together in a beaker. A solid and new liquid formed. The student forgot to write down the mass of one of the reactants. The rest of the data is shown in the table below."

Question

"A student mixed two clear liquids together in a beaker. A solid and new liquid formed. The student forgot to write down the mass of one of the reactants. The rest of the data is shown in the table below."
The data (mass, in grams):
Liquid reactant A: unknown
Liquid reactant B: 9.0 
Liquid product: 8.0
Solid product: 12.0

I don't want to know if it's A, B, C, or D because I already know the answer. If someone could please explain how to find liquid reactant A's mass I would appreciate that greatly, because I need to know how to do this on my own. Thank you in advance

Parakeenta · Accepted Answer

NEVERMIND! I'm dumb! I just had to add the liquid and solid product and subtract them from 9 to get 11.

Writeacher · Answer

Good job to figure it out on your own! Congrats!!

Damon · Answer

Yes, mass is conserved :)