How many moles of sodium will have same number of atoms as 5 g of copper?
mols Cu in 5 g Cu = 5.00/63.55 = ??
# atoms in that many mols Cu will be the same for ANY monatomic element.
If you want the grams of Na in this amount, then mols = g/atomic mass OR
g = mols x atomic mass = ??mols x 23 (Look up the atomic mass of Na to make sure that is right).
question is confusing. Is the answer 2.1789 mol of Na?
No. Re-read my response. It clearly says
mols Cu = 5.00/63.55 = ?? and that will be the mols Na or any other monatomic element of your choosing. Punch in 5.00 and divide by 63.55 and I don't get 2.17
To find out how many moles of sodium have the same number of atoms as 5 g of copper, we need to use the concept of moles and the molar mass of each element.
First, we need to determine the molar mass of copper. The molar mass of copper (Cu) is approximately 63.55 g/mol.
Next, we need to determine the number of moles of copper in 5 g of copper. We can use the formula:
Number of moles = Mass (g) / Molar mass (g/mol)
Number of moles of copper = 5 g / 63.55 g/mol
Now, let's calculate the number of moles of copper:
Number of moles of copper = 0.0787 mol (rounded to four decimal places)
Since the number of atoms in a substance is directly proportional to the number of moles, we can now determine the number of moles of sodium that will have the same number of atoms as 5 g of copper.
However, to do this, we need to know the molar mass of sodium (Na), which is approximately 22.99 g/mol.
Now, we can calculate the number of moles of sodium:
Number of moles of sodium = Number of moles of copper = 0.0787 mol
Therefore, approximately 0.0787 moles of sodium will have the same number of atoms as 5 g of copper.