Which of the following statements are correct about one mole of oxygen (O2) mole

Question

Which of the following statements are correct about one mole of oxygen (O2) molecules? a. It is equivalent to 16 grams of O2 b. Under appropriate conditions, can combine with 1 mole of carbon to stochiometrically form one mole of carbon dioxide c. It is equivalent to 6.02 x 1023 molecules of O2 d. If segregated into a container all by itself 1 mole of O2 occupies 24.47 liters of space at room temperature (25 degrees C) and 1 atm pressure (PV = nRT, R=.0821 L atm/mol K, K=degrees Celsius +273) e. It will dissolve in 1 mole of water

Explanation / Answer

a. Incorrect.

The molar mass of O2 is 32 g/mol. So, one mole of oxygen molecules is equivalent to 32 grams of O2.

b. Correct.

The stochiometric equation is,

C + O2 --------->   CO2

c. Correct.

One mole of any gas contains Avogadro's number (6.02*10^23) of molecules.

So, one mole of oxygen gas equivalent to 6.02*10^23 molecules of O2.

d. Correct.

Molar volume of any gas at STP ( standard temperature and pressure) is 24.47 L.

e. Incorrect.

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