To find the number of moles of copper atoms with a mass equal to the mass of a penny, we divide the mass of the penny by the mass of a copper atom.
Mass of a penny = 2.5 g
Mass of a copper atom = 1.06 × 10^(-22) g
Number of moles = (Mass of the penny) / (Mass of a copper atom)
= 2.5 g / (1.06 × 10^(-22) g)
Using a scientific calculator, we find:
Number of moles = 2.36 × 10^22 mol
Therefore, the number of moles of copper atoms with a mass equal to the mass of a penny is 2.36 × 10^22 mol.
A copper atom has a mass of 1.06*10 to power of -22g and a penny has a mass of 2.5g
Use this information to answer the question below be sure your answer has the correct number of significant digits
How many moles of copper atoms have a mass equal to the mass of a penny
1 answer