Answer: The correct answer is option C.
Explanation:
Burning of paper produces three products which are ash, smoke and dust. The equation follows:
[tex]\text{Paper}\xrightarrow[]{Heat}\text{Ash + Smoke + Dust}[/tex]
Every equation follows Law of Conservation of Mass. This law states that mass can neither be created nor be destroyed but it can only be transformed from one form to another. In a chemical reaction total mass on the reactant side is always equal to the total mass on the product side.
On the reactant side:
Mass of paper = 4.8 grams
On product side:
Mass of ash = 0.1 g
Mass of smoke = 2.2 g
Total mass = 4.8 g
Mass of Dust = 4.8 - ( 2.2 + 0.1) = 2.5 g
Hence, the correct answer is option C.
