Question

There are 9.25 x 1020 molecules of nitrobenzene (C6H5NO2) .Report your answer in scientific notation. x 10 • How many moles of C6H5NO2 are present? mol x 10

Answer 1

To calculate the number of moles of nitrobenzene from the given number of molecules, divide the given number of molecules by Avogadro's number. The result is 1.536 x 10^-3 moles of C6H5NO2.

Step-by-step explanation:

The student has 9.25 x 1020 molecules of nitrobenzene (C6H5NO2). To find the number of moles of C6H5NO2, we use Avogadro's number, which is 6.022 x 1023 molecules per mole. We divide the given number of molecules by Avogadro's number to find the moles.

Number of moles = (9.25 x 1020 molecules) / (6.022 x 1023 molecules/mol) = 1.536 x 10-3 moles.

Therefore, there are 1.536 x 10-3 moles of C6H5NO2 present.