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Nesterboy [21]
2 years ago
13

Convert 2.5 X 10^24 atoms of copper to grams of copper

Chemistry
1 answer:
viva [34]2 years ago
7 0

2.5 X 10²⁴ atoms of copper is equivalent to 266.7g of Cu.

HOW TO CALCULATE MASS:

  • The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass. That is;

  • mass of substance (g) = no. of moles (mol) × molar mass (g/mol)

  • However, the number of moles of copper must first be calculated by dividing the number of atoms by Avogadro's number as follows:

  • no. of moles of Cu = 2.5 X 10²⁴ ÷ 6.02 × 10²³

  • no. of moles = 2.5/6.02 × 10²⁴-²³

  • no. of moles = 0.42 × 10¹

  • no. of moles = 4.2moles of copper.

  • Molar mass of copper = 63.5g/mol

  • Mass of copper = 4.2mol × 63.5g/mol

  • Mass of copper = 266.7g

Therefore, 2.5 X 10²⁴ atoms of copper is equivalent to 266.7g of Cu.

Learn more at: brainly.com/question/12154684?referrer=searchResults

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