Final answer:
To find the grams of Oxygen in 4.50 × 10²³ formula units of (NH₄)₂SO₄, we convert formula units to moles, determine the moles of Oxygen, and then use the molar mass of Oxygen to calculate the mass.
Step-by-step explanation:
The student asked how many grams of Oxygen are in 4.50 × 10²³ formula units of (NH₄)₂SO₄. To answer this, we first need to find the number of moles of (NH₄)₂SO₄ this number of formula units represents, using Avogadro's number (6.022 × 10²³). Once we know the moles, we can determine the moles of Oxygen atoms present in the compound based on its chemical formula, in which there are four Oxygen atoms per formula unit. Then, using the molar mass of Oxygen (16 g/mol), we can calculate the grams of Oxygen.
The calculation steps are as follows:
- Convert the given number of formula units to moles using Avogadro's number.
- Multiply the moles of (NH₄)₂SO₄ by four, since there are four Oxygen atoms per formula unit of (NH₄)₂SO₄.
- Multiply the moles of Oxygen by the molar mass of Oxygen to obtain the grams of Oxygen.