1. Calculate the molar mass of H₂O:
* H₂O has 2 hydrogen atoms (1 g/mol each) and 1 oxygen atom (16 g/mol).
* Molar mass of H₂O = (2 * 1 g/mol) + (1 * 16 g/mol) = 18 g/mol
2. Calculate the moles of H₂O:
* Moles = Mass / Molar mass
* Moles = 44 g / 18 g/mol = 2.44 moles of H₂O
3. Calculate the number of molecules of H₂O:
* Number of molecules = Moles * Avogadro's number
* Number of molecules = 2.44 moles * 6.022 x 10²³ molecules/mol ≈ 1.47 x 10²⁴ molecules
4. Calculate the number of atoms in 44 grams of H₂O:
* Each molecule of H₂O contains 3 atoms (2 hydrogen + 1 oxygen).
* Total number of atoms = Number of molecules * Number of atoms per molecule
* Total number of atoms = 1.47 x 10²⁴ molecules * 3 atoms/molecule ≈ 4.41 x 10²⁴ atoms
Therefore:
* There are 2.44 moles of H₂O in 44 grams.
* There are approximately 1.47 x 10²⁴ molecules of H₂O in 44 grams.
* There are approximately 4.41 x 10²⁴ atoms in 44 grams of H₂O.
