Why is a balanced symbol equation consistent with conservation of mass?

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Question

Why is a balanced symbol equation consistent with conservation of mass?

Accepted Answer

The same number of each type of atom appears on both sides — Balancing ensures the same number of atoms of each element on both sides, so no atoms — and therefore no mass — are gained or lost.

Answer

The products are simpler

Answer

The same number of each type of atom appears on both sides

Answer

It has equal numbers of molecules

Answer

The reactants weigh less

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