Calculate the mass of oxygen required to form 80 g of sulfur oxide (VI).

1. Let’s compose the equation of sulfur combustion:

S + O2 = SO2

According to the equation, all substances are taken in an amount of 1 mol.

Let’s find the mass of O2 by the formula:

m (O2) = n * M = 1 mol * (16 * 2) = 32 g

Let’s find the mass of SO2 by the formula:

m (SO2) = n * M = 1 mol * 32 g / mol = 32 g

2. Let’s calculate the mass of oxygen, making up the proportion:

x g O2 – 80 g SO2

32 g O2 – 32 g SO2

Hence, x = 32 * 80/32 = 80 g

Answer: m (O2) = 80 g.