What is the basic principle of stoichiometry that relates to the conservation of mass?
A.
Matter is neither created nor destroyed in a chemical reaction.
B.
The number of molecules in products equals the atoms in reactants.
C.
The product mass is always less than the reactant mass.
D.
Energy is conserved, but matter can be created or destroyed.
Exam No：AP Chemistry Practice Test Year：2024 Question No：APChemistry2024AP0368
Answer:
A
Knowledge points:
1.6 Photoelectron Spectroscopy
Solution:
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