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Question

5 g of X reacts with 6 g of Y to form a new product Z.
X+YZ. The mass of the product Z formed is g.

A
13
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B
6
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C
11
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Solution

The correct option is C 11
According to the law of conservation of mass, the mass in a chemical reaction remains conserved.

In other words, the total mass of products formed is equal to the total mass of reactants participated.

Hence, mass of Z = mass of X + mass of Y = 5 + 6 = 11 g.

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