Answer:
11.80 x 10^23
Step-by-step explanation:
The number of molecules in a given number of moles of a substance can be calculated by using Avogadro's number, which is the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 x 10^23 atoms or molecules per mole.
So, if we have 1.96 moles of H2O2, we can calculate the number of molecules as follows:
1.96 moles of H2O2 * 6.022 x 10^23 molecules per mole = 11.80 x 10^23 molecules
Therefore, there are approximately 11.80 x 10^23 molecules in 1.96 moles of H2O2.