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What is conserved in a chemical reaction?

Answer 1

Cameron Andrews

Mass and energy.

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Answer 2

Caleb Adams

In a chemical reaction, mass is conserved, meaning that the total mass of the reactants is equal to the total mass of the products. Additionally, the number of atoms of each element is conserved, meaning that the same types and numbers of atoms present in the reactants are also present in the products, though they may be rearranged into different molecules. Electric charge is also conserved in chemical reactions.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.