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Verbal·Standard English Conventions·Boundaries
hard
In a chemical equation, the value known as molar mass is useful for converting between the mass of the reactants and the mass of the product. The gaseous        have molar masses of 48.00 and 56.11 g/mol, respectively.
Which choice completes the text so that it conforms to the conventions of Standard English?
A
compounds ozone (O3) and isobutylene (C4H8),
B
compounds, ozone (O3) and isobutylene (C4H8)
C
compounds ozone (O3) and isobutylene (C4H8)
D
compounds, ozone (O3) and isobutylene (C4H8),