How many moles of oxygen atoms are in a sample of 3.98 x 10^23 atoms?

Explanation:

As per the mole concept, there are present in 1 mole of a substance.

Mathematically,    1 mole = atoms or molecules

Therefore, number of moles of oxygen atoms present in atoms are calculated as follows.

                  = 0.66 mol

Thus, we can conclude that there are 0.66 moles of oxygen atoms are in a sample of .

explanation:

i think option no d is the correct answer

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.