Chemistry gcse question- I don’t understand itWatch
We do 1.204*10to the power of 25 divided by Avogadro constant to get 20 moles which is definitely right
B) given that the atoms have a mean mass of 9.3*10 to the power of -23 grams. What is the element?
So I was wandering if mass/ moles = mass number then surely we have to do 9.3*10 to the power of -23 grams/ by the 20 moles from part a? But the answer isn’t correct. Please try to explain it for me too
One mole is the same number of grams as the molecular mass or atomic mass.
a) You have 1.204*10*25 atoms
Avogadro's constant is 6.022*10^23
1.204*10*25 atoms / 6.022*10^23 avogadro = 20 moles
Section B I don't follow you, is it possible you did a typo and it's ^23 not ^-23?
When it says "the atoms have a mean mass" do you mean "this particular sample of atoms" or "a specific amount [1 mole, 1 unit volume] of atoms"?