Question

I am seriously stuck...The sample containing the greatest number of atoms is;
a) 1.00 mol H2
b) 11.2 L Ne (at STP)
c) 6.94 g Li
d) 9.03x10^23 atoms Na

Answer 1

so you need to convert all of them to one unit (preferably moles or atoms)

use the following relations

\(\sf moles=\dfrac{mass}{Molar mass}\)

\(\sf moles=\dfrac{atoms~(or~molecules)}{avogadro's~number}\)

at STP, 1 mole of any gas is equal 22.414 L