What type of reaction does this investigation demonstrate, and as time progresses what will happen to the mass reading on the scale?
O A. This is a synthesis reaction and the mass reading will decrease as time progresses.
OB. This is a decomposition reaction and the mass reading will stay the same as time progresses,
C. This is a synthesis reaction and the mass reading will stay the same as time progresses,
D. This is a decomposition reaction and the mass reading will decrease as time progresses,

B. This is a decomposition reaction and the mass reading will stay the same as time progresses,

Explanation:

Decomposition reactions are when one reactant decomposes (breaks down) into two or more products. They follow the general form of:

AB --> A + B

The law of conservation of mass tells us that when a chemical reaction takes place, no mass is created or destroyed but transforms from one form to another. You can see from the diagram that you have the same number and type of atoms on each side of the reaction.

B

Explanation:

the answer is symmetrical : )