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

1 Answer
anor277
Jul 8, 2017

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.....

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