How many atoms are contained in the chemical formula #2AgNO_3#?

1 Answer
anor277
Dec 19, 2015

In one silver nitrate formula unit, there are 3 oxygen ATOMS, 1 nitrogen ATOM, and 1 silver atom.

Explanation:

Quite clearly, in 2 formula units of silver nitrate, there are 2 silver atoms, 2 nitrogen atoms, and 6 oxygen atoms.

We can improve this answer by using the mole concept. The mole is simply a VERY large number: #N_A= 6.022xx10^23#.

If we have 2 moles of silver nitrate, there are #N_A# silver atoms, #2xxN_A# nitrogen atoms, and #6xxN_A# oxygen atoms. Using the molar masses of each element, we can therefore predict the MASS of a mole of silver nitrate as #169.87# #g*mol^-1#, where this mass is the sum of the individual molar masses of the constituent elements.

Related questions
See all questions in Everything is Made of Atoms
Impact of this question
18853 views around the world
You can reuse this answer
Creative Commons License