Question

not getting any help in the Chemistry or Biology sections and I really have no idea how to do this calculation

How many moles of silver (Ag) are present in a sample of 3.8 × 1024 atoms Ag?

1.6 mol Ag
2.3 mol Ag
6.3 mol Ag
22.8 mol Ag

Answer 1

An advice would be that a mole of any element contains \[N_a=6.02\times10^{23}mol\]
where \(N_a\) signifies the number of atoms.

Answer 2

This means that in 1 mole of any sustance there is \(6,02\times10^{23} \) atoms.

Answer 3

see, I have this equation of 3.87 * (10^24) over 6.02 * (10^23) but I'm not sure on solving it. I'm not great with the conversions because I think the first part of this is atoms and they want moles?

Answer 4

*3.8 sorry not 3.87

Answer 5

How about a rule of three?
"if there is \(6,02\times10^{23}\) atoms in 1 mole, how many moles does \(3.8\times10^{24}\) molecules represent?"

Then, by cross multiplying:
\[x=\frac{ (1)(6,02\times10^{23}) }{ 3,8\times10^{24} }mol\]
so, try plotting that to your calculator, see what it gives as a result.