Question #05d9c

1 Answer
Michael · Ernest Z. · Stefan V.
Apr 14, 2015

There are 0.75 moles.

A_r of phosphorus = 30.97. This means that 1 mole of phosphorus atoms weighs 30.97g

So 1 mole of P_4 molecules weighs 4xx30.97= 123.88"g"

The number of moles n = mass/mass of 1 mole:

n=m/M_r=92.91/123.88=0.75

Related questions
See all questions in The Mole
Impact of this question
2227 views around the world
You can reuse this answer
Creative Commons License