C (667) that’s the answer boiii
Answer:
the molar mass is the mass of a given chemical element or chemical compound divided by the amount of substance
Answer:
Chemical reaction
Explanation:
It's creating a whole other substance
Answer:
The third option "A molecule of a compound is composed of at least two types of atoms" is correct
Explanation:
This question isn't about molecules, it's about elements and compounds.
Elements are made of one and only one type of atoms, while compounds are made of more than one type of atoms.
(Molecules are just groups of atoms, it doesn't matter what they're made of)