How many moles in 1.5*10^23 molecules of NH3?

Explanation:1 mole of stuff

specifies

6.022

*

10

23

individual items of stuff. So you have approx.

2 moles.

Explanation:

You have

1.51

*

10

24

individual ammonia molecules.

Moles of ammonia

=

1.51

*

10

24

⋅

ammonia molecules

6.022

*

10

23

⋅

ammonia molecles mol

-

1

=

approx. 2 moles of ammonia molecules

, but don't trust my arithmetic!

How many moles of nitrogen, of hydrogen, do you have in the specified quantity?

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