calculate number of atoms in 1 gram of copper
Answers
Mass of Cu = 63.5g/mol
no. of moles in 1g = 1/63.5 = 0.01574 moles
No. of atoms = no. of moles × N₀
= 0.01574 × 6.022 × 10²³
= 9.4835 × 10²³ atoms
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REQUIRED TOUGH CALCULATIONS!!!
Number of atoms in Cu = 9.478628 × 10²¹ atoms
About Copper:
The chemical element copper has the atomic number 29 and the symbol Cu. The atomic mass of copper is 63.54 g/mol. It is an extremely high electrical and thermal conductivity metal that is soft, malleable, and ductile.
Pure copper has a pinkish-orange tint when first exposed to the air. Copper is utilized as a construction material, a heat and electricity conductor, and a component of many other metal alloys, including sterling silver, which is used in jewelry.
Note:
No. of atoms = No. of moles × Avogadro's number
Avogadro's number = 6.022 × 10²³
Calculation:
Atomic mass of Cu = 63.5g/mol
Given the mass of Cu = 1 gram
As we know,
No. of moles = Given mass /Atomic mass
No of moles in 1 g Cu = 1/63.5 = 0.01574 moles
No. of atoms = No. of moles × N₀
= 0.01574 × 6.022 × 10²³
= 9.478628 × 10²¹ atoms
Therefore,
Number of atoms in Cu = 9.478628 × 10²¹ atoms
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