Question #28128

a sample of phosphorous has 0.5 moles of p4 atoms.calculate:-

(a)how many p atoms are there?

(b)how many moles of p atoms are there?

(a)how many p atoms are there?

(b)how many moles of p atoms are there?

Expert's answer

a) Each mole contains 6.022 x 10 SQR (23) of molecules. Each P_{4} molecule contains 4 atoms.

0.5 moles of p4 contain: 0.5 x 6.022 x 10 SQR (23) x 4 = 12.044 x 10 SQR (23) p atoms.

b) As we can see from formula P_{4}, each mole of it contains 4 moles of atoms P.

So, 0.5 moles of P_{4} contain: 0.5 x 4 = 2 moles of P atoms.

0.5 moles of p4 contain: 0.5 x 6.022 x 10 SQR (23) x 4 = 12.044 x 10 SQR (23) p atoms.

b) As we can see from formula P

So, 0.5 moles of P

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