Question

Convert 50g of calcium carbonate, CaCO3, into moles

Answer 1

When we convert 50 grams of calcium carbonate,
`CaCO_3`, into moles, the result obtained is 0.5 mole

How to convert 50 grams into moles?

The conversion grams into mole can be obtained by using the following formula:

Mole of substance = mass / molar mass of substance

Now, we shall convert 50 grams of grams of calcium carbonate,
`CaCO_3`, into moles. Details below:

• Mass of calcium carbonate,
  `CaCO_3`, = 50 grams
• Molar mass of calcium carbonate,
  `CaCO_3`, = 100 g/mol
• Mole of calcium carbonate,
  `CaCO_3` =?

Mole of calcium carbonate,
`CaCO_3` = Mass / molar mass

= 50 / 100

= 0.5 mole

Thus, we can conclude that 50 grams of calcium carbonate,
`CaCO_3` is equivalent to 0.5 mole of calcium carbonate,
`CaCO_3`

Answer 2

Answer:
Moles = 0.5 mol

Solution:

Moles is related to mass as follow,

Moles = Mass / M.mass ----- (1)

Where;
Mass = 50 g

M.mass = Ca (40) + C (12) + O₃ (16)₃ = 100 g/mol

Putting values in equation 1,

Moles = 50 g ÷ 100 g.mol⁻¹

Moles = 0.5 mol