SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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show conservation of energy
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show conservation of mass
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to make equation attractive
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All of the above
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Detailed explanation-1: -A balanced chemical equation always obeys law of conservation of mass. According to this law the mass of products must be equal to the mass of reactants. A reaction is said to be balanced when the total mass of atoms on both sides of the chemical reaction is equal.
Detailed explanation-2: -All chemical equations must be balanced because matter cannot be created or destroyed in chemical reactions. Antoine Lavoisier did careful experiments to discover the law of conservation of mass in chemical reactions.
Detailed explanation-3: -CH4 + 2O2 → 2H2O + CO2 Besides balanced equations, Law of Conservation of Mass also means that the products of a chemical reaction should always have the same mass as the reactants. If the reaction begins with 150.0g of reactants, the products should add up to 150g at the end of the reaction.