Final answer:
To determine the amount of oxygen in grams that contains 1.5×10²² molecules, we divide the given number of molecules by Avogadro's number to find the number of moles. Then, we multiply the number of moles by the molar mass of oxygen to find the mass in grams. The amount of oxygen is approximately 0.3984 grams.
Step-by-step explanation:
In order to determine the amount of oxygen in grams that contains 1.5×10²² molecules, we need to use the molar mass of oxygen, which is 16.00 g/mol.
The calculation involves dividing the given number of molecules by Avogadro's number to find the number of moles.
Then, multiplying the number of moles by the molar mass of oxygen will give us the mass in grams.
Given: Number of molecules = 1.5×10²²
Step 1: Determine the number of moles
Number of moles = 1.5×10²² / 6.022 × 10²³ = 0.02490 mol
Step 2: Calculate the mass in grams
Mass in grams = Number of moles × Molar mass = 0.02490 mol × 16.00 g/mol = 0.3984 g
Therefore, the amount of oxygen in grams that contains 1.5×10²² molecules is approximately 0.3984 grams.