how many moles of zinc atoms are need to supply the same number of atoms as 56.0g of argon?
#mol Zn=56.0gAr x 1mol/40g = 1.40mol Zn?
since it has the same amount of atoms I don't have to multiply anything else?
That looks ok to me but I would have used 39.9 for Ar. Ar is 39.948 which rounds to 39.9 instead of 40.
Alright, thanks!
To determine the number of moles of zinc atoms needed to supply the same number of atoms as 56.0g of argon, you should use the molar mass of each element and Avogadro's number.
First, calculate the number of moles of argon:
moles of argon = mass of argon / molar mass of argon
The molar mass of argon (Ar) is approximately 39.95 g/mol.
moles of argon = 56.0g / 39.95 g/mol ≈ 1.40 mol
Now, to determine the number of moles of zinc atoms, you need to consider the molar mass of zinc (Zn). The molar mass of zinc is approximately 65.38 g/mol.
moles of zinc = moles of argon x (molar mass of zinc / molar mass of argon)
moles of zinc = 1.40 mol x (65.38 g/mol / 39.95 g/mol)
moles of zinc ≈ 2.289 mol
Therefore, you would need approximately 2.289 moles of zinc atoms to supply the same number of atoms as 56.0g of argon.