Question

How many molecules are there in 10.96x10-22 grams SO3 ?

Answer 1

To find the number of molecules in 10.96x10-22 grams of SO3, convert the mass to moles using the molar mass of SO3. Then use Avogadro's number to convert moles to molecules.

Step-by-step explanation:

To find the number of molecules in 10.96x10-22 grams of SO3, we need to convert the mass of SO3 to moles using the molar mass of SO3. The molar mass of SO3 is 80.06 g/mol, so we can use the conversion factor:

1 mol SO3 = 80.06 g SO3

Now we can calculate the number of moles:

10.96x10-22 g SO3 x (1 mol SO3 / 80.06 g SO3) = 1.369x10-24 mol SO3

Finally, we use Avogadro's number to convert moles to molecules:

1.369x10-24 mol SO3 x (6.022x1023 molecules/mol) = 8.24x10-2 molecules