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n g of substance X reacts with m g of su...

`n g` of substance `X` reacts with `m g` of substance `Y` to from `p g` of substance `R` and p g of substance S. This reaction can be represented as, `X+Y=R+S`. The relation which can be established in the amounts of the reactants and the products will be

A

x - y = m - n

B

x + y = m + n

C

x = y

D

p = q

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The correct Answer is:
B
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