What is the mass of oxygen in 250 g of sulfuric acid #H_2SO_4#?
This amount of
First, you must determine the number of moles of the compound. This will enable you to find how many moles of the particular element would be present, and you can convert this to mass.
In each molecule of
Since each mol of O atoms has a mass of 16.0 g, the total mass of oxygen would be