There are 55.72 grams in 1.2 x 10²⁴ molecules of CO.
HOW TO CALCULATE MASS:
- The mass of a substance can be calculated by multiplying the number of moles by its molar mass.
- However, the number of moles in 1.2 x 10²⁴ molecules of CO needs to be calculated by dividing by Avogadro's number as follows:
- no. of moles = 1.2 x 10²⁴ ÷ 6.02 × 10²³
- no. of moles = 0.199 × 10¹
no. of moles = 1.99 moles
- Molar mass of CO = 12 + 16 = 28g/mol
- mass of CO = 1.99moles × 28g/mol
- Therefore, there are 55.72 grams in 1.2 x 10²⁴ molecules of CO.
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