Question

Determine the mass of SO₂ that contains 6.075 × 10^26 S atoms.​

Answer 1

Avogadro's law states that in a mole of any substance, there are
`6.022 * 10^(23)` atoms. This means that in the given sample, there are

`(6.075 * 10^(26))/(6.022 * 10^(23))=1008.8010627 \text{ mol}`

• The atomic mass of sulfur is 32.06 amu.
• The atomic mass of oxygen is 15.9994 amu.

So, the atomic mass of sulfur dioxide is

`32.06+2(15.9994=64.0588 \text{ g/mol}`

Therefore, the mass is:

`(64.0588)(1008.8010627)=\boxed{64620 \text{ g (to 4 sf)}}`