We already know the molar mass of C is 12.01g/mol, of H is 1.008 g/mol, and of O is 16g/mol.
If the molecular formula were also the empirical formula (which is CH2O), then it would have a molar mass of:
12.01g/mol +2*(1.008g/mol)+ 16g/mol= 30.03g/mol
However, the actual molar mass of the molecular formula is 60.g/mol, which is about twice as large as 30.03g/mol. Therefore, we have to multiply the empirical formula by 2.
The molecular formula of this compound is (2) C2H4O2.
Hope this would help~
Isotopes are variants of an element which have differing number of neutrons. So, yes, because all of them have the same atomic number, meaning they are all Mg, however they all have differing atomic masses meaning different number of neutrons.
Answer:
The answer to your question is: A) temperature at which a material catches on fire.
Explanation:
(A) temperature at which a material catches on fire this is a chemical property, so this is the right answer to your question.
(B) color physical property
(C) conductivity physical property
(D) hardness physical property
<span>When c2h4 molecules polymerize, the name of the polymer formed is (b) Polyethylene. This is because the compound C2H4 is ethylene (common name) or ethene (IUPAC name) and polymerizing it would produce polyethylene. The other names are not applicable for C2H4.
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"-2" is the electric charge of the oxygen ion among the following choices given in the question. It actually needs two electrons to complete the stable outer shell. The correct option among all the options that are given in the question is the third option or option "C". I hope that the answer has helped you.
