Question

Upon mixing solution (1) with solution (2) a solid chemical
matter is formed. The mass of this matter is
A-is greater than the mass of (1) and (2)
B-is less Than the mass of (1) and (2)
C-is equal to the mass of (1) and (2)
D-is changing according to the reaction

Answer 1

I think

D-is changing according to the reaction