Question

Which of the following contains maximum number of atoms? a. 22.4 L of CO2(g) at STP b. 1 g molecule of CaCO3 c. 1 mole of SO3(g) d. 6*10²³ molecules of NH3

Answer 1

All, save `b.` represent approx. a mole of molecules...........`"Option c"` is the best answer............

Explanation:

And a mole specifies `6.022xx10^23` individual molecules.......and is represented by the `N_A`.

`a.` contains `3xxN_A` atoms.........

`b.` contains `(1*g)/(100.1*g*mol^-1)xx3xxN_A` atoms.........

`c.` contains `4xxN_A` atoms.........i.e. `3N_AxxO` atoms, and `N_AxxS` atoms.....

`d.` contains (almost) `4xxN_A` atoms.........i.e. `N_AxxN` atoms, and `3xxN_AxxH` atoms.....