Determine the mass in grams of one molecule of water, H₂O. A) 2.99 × 10^{− 23} g B) 1.08 × 10²⁵ g C) 10 grams D) 18 grams E) None of these.

Question

Quizplus · Accepted Answer

The molecular mass of water (H2O) is approximately 18 g/mol. Using Avogadro's number (6.022 × 10^23 molecules/mol), the mass of one molecule of water can be calculated as (18 g/mol) / (6.022 × 10^23 molecules/mol) = 2.99 × 10^-23 g.

Determine the Mass in Grams of One Molecule of Water