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Question
In a chemical reaction, reactant A gets converted to B and C as shown below.
A → B + C
If the masses of A and C are 40 g and 10 g respectively, the mass of B will be ______.
In a chemical reaction, reactant A gets converted to B and C as shown below.
A → B + C
If the masses of A and C are 40 g and 10 g respectively, the mass of B will be ______.
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Solution
The correct option is C 30 g
According to law of conservation of mass, the total mass of products is equal to total mass of reactants.
Mass of A = Mass of B + Mass of C
The mass of the reactant, A = 40 g.
Thus, total mass of products, i.e. mass of B + mass of C = 40 g.
∴ Mass of B = (mass of A) - (mass of C)
= 40 - 10 = 30 g.
According to law of conservation of mass, the total mass of products is equal to total mass of reactants.
Mass of A = Mass of B + Mass of C
The mass of the reactant, A = 40 g.
Thus, total mass of products, i.e. mass of B + mass of C = 40 g.
∴ Mass of B = (mass of A) - (mass of C)
= 40 - 10 = 30 g.
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