Question

Which of the following is true about the products formed during photosynthesis?

A. They have the same mass as the mass of reactants.
B. They are the same set of compounds as the reactants.
C. They have more mass than the mass of reactants.
D. They are chemically the same as the reactants.

Answer 1

Based from conservation of mass, the products form after the photosynthesis reaction, products formed have the same mass as the mass of reactants

Answer 2

Answer: Option (A) is the correct answer.

Step-by-step explanation:

According to law of conservation of mass, like energy, mass can neither be created nor it can be destroyed.

It can only be transformed from one form to another.

For example, reaction equation for photosynthesis process is
`6CO_(2) + 6H_(2)O \rightarrow C_(6)H_(12)O_(6) + 6O_(2)`

Mass of 6
`CO_(2)` = 6 (12 + 32) g/mol = 264 g/mol

Mass of 6
`H_(2)O` = 6(2 + 16) g/mol = 108 g/mol

Mass of
`C_(6)H_(12)O_(6)` = 180 g/mol

Mass of 6
`O_(2)` = 192 g/mol

Therefore, total mass of the reactants is 372 g/mol and the mass of products is 372 g/mol.

Thus, we can conclude that the statement, they have the same mass as the mass of reactants, is true about the products formed during photosynthesis.