A substance Y undergoes a chemical reaction in which the combined mass of products formed is exactly equal to the mass of Y taken for the reaction. what kind of substance y is?

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Solution

Answer:
This given Substance Y is a compound. Which is going under decomposition chemical reaction.
When an compound undergoes in a reaction decomposition chemical reaction, it will breaks into several products.
The total mass of products formed is exactly equal to the mass of Y taken for the reaction.
For Example:
The decomposition of calcium carbonate:
${CaCO}_{3} (s) \overset{Heat}{\to} CaO (s) + {CO}_{2} (g) Calcium Calcium oxide Carbon dioxide carbonate Mass of Calcium carbonate = 100 amu Sum of masses of products (CaO & {CO}_{2}) = 56 + 44 = 100 amu .$
Therefore, The given Substance Y is a compound.

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