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
What is the mass of 1 mole of copper atoms in g?
To find the mass of 1 mole of copper atoms, we need to multiply the mass of one copper atom by Avogadro's number (6.022 x 10^23 atoms/mol).
Mass of 1 mole of copper atoms = (mass of one copper atom) x (Avogadro's number)
= (1.06 x 10^-22 g) x (6.022 x 10^23 atoms/mol)
= 6.38012 x 10^1 g/mol
= 63.8 g/mol
Therefore, the mass of 1 mole of copper atoms is 63.8 g.
To find the mass of 1 mole of copper atoms in grams, we need to use the atomic mass of copper, which is given by the periodic table. The atomic mass of copper is approximately 63.55 g/mol.
Since there are 6.022 × 10^23 copper atoms in 1 mole (Avogadro's number), we can use this information to calculate the mass of 1 mole of copper atoms as follows:
Mass of 1 mole of copper atoms = Atomic mass of copper × Avogadro's number.
Mass of 1 mole of copper atoms = 63.55 g/mol × 6.022 × 10^23 atoms/mol.
Calculating this gives us:
Mass of 1 mole of copper atoms = 3.819 × 10^25 g/mol.
Therefore, the mass of 1 mole of copper atoms is approximately 3.819 × 10^25 grams, with the correct number of significant digits.
To find the mass of 1 mole of copper atoms in grams, we need to calculate the molar mass of copper first.
The molar mass of copper is the mass of one mole of copper atoms. In other words, it is the mass of 6.022 x 10^23 copper atoms (Avogadro's number). We can calculate the molar mass using the information given.
Given:
- Mass of one copper atom = 1.06 x 10^-22 g
- Mass of a penny (assumed to be made of pure copper) = 2.5 g
To find the molar mass of copper, we can use the following conversion:
1 mole of copper atoms = Avogadro's number (6.022 x 10^23) copper atoms
First, we need to calculate the number of copper atoms in 2.5 grams (mass of the penny):
Number of copper atoms = Mass of the penny / Mass of one copper atom
Number of copper atoms = 2.5 g / 1.06 x 10^-22 g
Now, divide the number of copper atoms in the penny by Avogadro's number to find the molar mass:
Molar mass of copper = Number of copper atoms / Avogadro's number
Molar mass of copper = (2.5 g / 1.06 x 10^-22 g) / 6.022 x 10^23
Solving this equation will give us the molar mass of copper, which will be the mass of 1 mole of copper atoms in grams. Ensure that the final answer has the correct number of significant digits.