Question

Which quantity of O2 contains exactly 3.01 × 1023 molecules?  a)0.500 mol   b)0.250 mol   c)16.0 mol   d)32.0 mol

Answer 1

The quantity of O2 containing exactly 3.01 × 10²³ molecules is 0.250 mol, as it is half of Avogadro's number of molecules.(Option b)

Step-by-step explanation:

The quantity of O2 that contains exactly 3.01 × 1023 molecules is 0.250 mol. This is because Avogadro's number (6.022 × 1023 molecules/mol) states that one mole of a substance contains that many molecules. Therefore, if you have half of Avogadro's number of molecules, you have half a mole, which is 0.5 mol, but since we have exactly half of that number (3.01 × 1023 molecules), it corresponds to 0.250 mol.

Additionally, this correlation between the number of molecules and the amount of substance is fundamental to the concept of molar quantity in chemistry, providing a precise and quantitative link between molecular entities and their macroscopic measurements.

Answer 2

I would think it would be b