How many atoms are in .1785 mmol magnesium?

1 Answer
Oct 9, 2016

Answer:

There are #1.0749*10^20# atoms in 0.1785 millimoles of magnesium.

Explanation:

First, convert millimoles into moles:

#.1785# mmol = #1.785 * 10^-4# moles

Then multiply by Avogadro's number (6.022x10^23 atoms/mole)

#1.785 * 10^-4# moles x #6.022*10^23# atoms/mole = #1.0749*10^20# atoms.

This method works no matter what the element or compound is.