Answer;
= 1.495 moles
Explanation;
-One mole contains 6.02 ×10^23 particles
Therefore;
1 mole = 6.02 ×10^23 atoms
Thus; 9.00 ×10^23 atoms will have;
= 9.00 ×10^23 atoms / 6.02 ×10^23 atoms
= 1.495 moles
Answer:
2.49
⋅
10
−
12
moles Pb
Explanation:
Before doing any calculations, it's worth noting that atoms do not contain moles, it's the other way around.
A mole is simply a collection of atoms. More specifically, you need to have exactly
6.022
⋅
10
23
atoms of an element in order to have one mole of that element - this is known as Avogadro's number.
In your case, you must determine how many moles of lead would contain
1.50
⋅
10
12
atoms of lead.
Well, if you know that one mole of lead must contain
6.022
⋅
10
23
atoms of lead, it follows that you get
1.50
⋅
10
12
atoms of lead in
1.50
⋅
10
12
atoms of Pb
⋅
1 mole Pb
6.022
⋅
10
23
atoms of Pb
=
2.49
⋅
10
−
12
moles Pb
