You have 40g of MgCl2. How many atoms of Cl are in the sample?

1 Answer
Junaid Mirza
Mar 4, 2018

5.07 × 10^23

Explanation:

Molar mass of "MgCl"_2 = "95 g/mol"

Moles of "MgCl"_2 in given sample = "40 g"/"95 g/mol" = "0.421 mol"

Moles of "Cl" atoms in given sample = 2 × "0.421 mol" = "0.842 mol"

Number of "Cl" atoms = 0.842 cancel"mol" × (6.022 × 10^23)/cancel"mol" = 5.07 × 10^23

Related questions
See all questions in The Mole
Impact of this question
17478 views around the world
You can reuse this answer
Creative Commons License