In the equation 2 H2 + O2 → 2 H2O,
A. H2, O2, and H2O are all compounds.
B. H2, O2, and H2O are all elements.
C. only H2O is a compound.
D. only H2 and O2 are compounds.
Answer:C
In the equation 2 H2 + O2 → 2 H2O,
A. H2, O2, and H2O are all compounds. B. H2, O2, and H2O are all elements. C. only H2O is a compound. D. only H2 and O2 are compounds.