Answer & Explanation:
To determine the mass of oxygen in a 4.5 g sample of the compound, we can follow these steps:
Find the mass percentage of oxygen in the compound.
Calculate the mass of oxygen in the 4.5 g sample using the mass percentage.
According to the provided information, the mass percentage of oxygen is 61.5%.
Now, let's calculate the mass of oxygen in the 4.5 g sample:
Math
"Mass of oxygen in 4.5 g sample = (Mass percentage of oxygen / 100) × Total mass of the sample"
Plugging in the values:
Math
"Mass of oxygen in 4.5 g sample = (61.5 / 100) × 4.5 g"
Now, calculate the result:
Math
"Mass of oxygen in 4.5 g sample = 0.615 × 4.5 g = 2.7675 g"
Thus, the mass of oxygen in a 4.5 g sample of the compound is approximately 2.7675 g.