Answer:
9.45x10^24 molecules
Explanation:
From Avogadro's hypothesis, we understood that 1mole of any substance contains 6.02x10^23 molecules. This suggest that 1mole of CO2 also contains 6.02x10^23 molecules.
Now, if 1mole of CO2 contains 6.02x10^23 molecules, then 15.7moles of CO2 will contain =
15.7 x 6.02x10^23 = 9.45x10^24 molecules
Therefore, 15.7moles of CO2 contains 9.45x10^24 molecules
