Answer:- [tex]8.07*10^2^8atoms[/tex]
Solution:- It is a unit conversion where it asks to convert kg of He to atoms. We need to convert kg to grams, grams to moles and finally moles to atoms.
We know that, 1 kg = 1000 g
Molar mass of He is 4.0 grams per mole and 1 mole of an atom equals to Avogadro number of atoms.
The set up would be as given below:
[tex]536kg(\frac{1000g}{1kg})(\frac{1mole}{4g})(\frac{6.02*10^2^3atoms}{1mole})[/tex]
= [tex]8.07*10^2^8atoms[/tex]
So, there are [tex]8.07*10^2^8atoms[/tex] of He in it's 536 kg.
