Which must be the same when comparing 1 mol of oxygen gas, o2, with 1 mol of carbon monoxide gas, co?
a. the mass
b. the volume
c. the number of molecules
d. the number of oxygen atoms

Answer : Option C) The number of molecules.

Explanation : When comparing 1 mol of oxygen gas with 1 mol of carbon monoxide the number of molecules must be same. Each mole should contains in it. Irrespective of the weight or atomic number avogadro's number remains constant for every mole of atom.

It is a number which is usually given for atoms or molecules, that are contained in the amount of substance given by one mole.

It is denoted by .

The units of Avogadro's number can be expressed in terms of electrons, atoms, ions, or molecules, depending on the nature of the substance and the character of the reaction.

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying

a corroding iron, if that's one of your choices