What is the mass, in grams, of a sample of 6.98 × 1024 atoms of magnesium (Mg)? Show your work or explain the steps that you used to determine your answer.

Question

jfraser · Answer

10^24 atoms is an insanely large number of atoms, but thankfully we have a term that allows us to group insanely large numbers of things into a collective grouping: the mole

1 mole of anything = 6.022x10^23 of those things. Use that as a conversion factor to find moles of Mg atoms, then use the average atomic mass of Mg (found on the periodic table) to find how much that pile weighs