GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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number of moles and the volumes.
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number of molecules and the volumes.
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mass and the number of atoms.
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mass and moles.
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Detailed explanation-1: -Chemical reactions are strict followers of this law. For this reason, chemical reactions should always be balanced where the total mass of and the number of atoms of the reactants is equal to the total mass and number of atoms of all the products.
Detailed explanation-2: -The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.
Detailed explanation-3: -The number of atoms is conserved during the reaction. However, you will also see that the number of molecules in the reactants and products are not the same. The number of molecules is not conserved during the reaction.
Detailed explanation-4: -Chemical Reactions Even in a chemical reaction when atoms interact and create new products, mass is conserved. This is because the new substances created are composed of atoms that were present in the reactants.