which elements compose a molecule of water
A. Carbon and oxygen
B. carbon and hydrogen
C. Hydrogen and oxygen
D. hydrogen and nitrogen
A. Carbon and oxygen
B. carbon and hydrogen
C. Hydrogen and oxygen
D. hydrogen and nitrogen
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Answer:
C) Hydrogen and oxygen
Explanation:
Water molecules are made of hydrogen and oxygen atoms, in the definite proportion of two hydrogens for one oxygen. Hence, a molecule is the smallest subunit of a compound while an atom is the smallest subunit of an element.