Question

The relative atomic mass of sulfur is 32 and of oxygen it is 16. The compound shown below contains 80g of sulfur and 120g of oxygen. What is the value of x?

Answer 1

Answer: 32g of sulfur, S, is 1 molar mass

1 molar mass contains X particles (in this case, atoms)

32g of oxygen, O2, is 1 molar mass

1 molar mass contains X particles (in this case, molecules)

There are 2 oxygen atoms in each molecule of O2 gas

Therefore, there are 2X atoms of oxygen in 32g of oxygen gas.

Explanation:  bcs yes

Answer 2

The value of x in the compound SOₓ is 3 . The compound is SO₃

The relative atomic mass of sulphur is given as 32

The relative atomic mass of oxygen is given as 16

The compound shown contains 80 g of sulphur and 120 g of oxygen.

The value of x can be calculated as follows:

molecular mass of S0ₓ = 32 + 16x

if 32 g of sulphur is in 32 + 16x of the of S0ₓ

80 g of sulphur is in 200 g of the compound

cross multiply

200(32) = 80(32 + 16x)

6400 = 2560 + 1280x

6400 - 2560 = 1280x

3840 = 1280x

x = 3840 / 1280

x = 3

Therefore, the compound is SO₃

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