What is the mass in grams of #5.56 X 10^22# lead atoms?

1 Answer
anor277
Jan 25, 2017

Well, #6.0221xx10^23# individual lead atoms have a mass of #207.2*g#.

Explanation:

So we take the quotient,

#(5.56xx10^22" atoms")/(6.022xx10^23*"atoms"*mol^-1)# #xx207.2*g*mol^-1# #=#

#"How many grams?"#

This idea of mass equivalence, of a mass representing a GIVEN number of atoms or molecules, is central to chemistry, and it is worth getting right. Using this concept, for a given reactant, we can predict the mass of products likely to be observed. Over your studies in chemistry, you will do many such problems.

Related questions
See all questions in Atomic Mass
Impact of this question
3617 views around the world
You can reuse this answer
Creative Commons License