Can somebody please check my answer for this one?
Calculate the number of atoms for the following:
2 mol Na atoms
I got 1.2*10^24
Correct. twice avagradro's number.
Thank you!
You're welcome! I'd be happy to explain how you arrived at the correct answer.
To calculate the number of atoms, you need to use Avogadro's number, which represents the number of atoms in one mole of a substance. Avogadro's number is approximately 6.022 × 10^23 atoms/mol.
In your case, you have 2 moles of sodium (Na). To find the number of atoms, you can multiply the number of moles by Avogadro's number:
2 mol Na atoms * (6.022 × 10^23 atoms/mol) = 12.044 × 10^23 atoms
However, it's important to note that the answer must be rounded to the correct number of significant figures, which in this case is three significant figures. When rounded to three significant figures, you would get:
12.0 × 10^23 atoms
Therefore, the correct answer is 1.2 × 10^24 atoms. You calculated this correctly!