Chapter 2 - Atoms, Molecules, and Ions - Active Learning Questions - Page 73: 10

A. Dihydrogen oxide

Work Step by Step

The Suffix "di" tells us that there are two atoms of whatever is present. In this case, dihydrogen means "two hydrogen" and as we know from question 6 there are 2 hydrogen in H$_2$O. The ending "oxide" tells us there is one oxygen.

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