Question

How many moles of N are there in 0.273 g of N? Round your answer to the fourth decimal place

Answer 1

0.0195 moles of N

Step-by-step explanation:

The molar mass of N is 14 g. I mole of an element is it's molar mass expressed in g.

so,

14 g N has 1 mole

0.273 g N will have

0.273 ÷ 14 = 0.0195 moles

or

n=
`(w)/(M)` , where n= no of moles, w is mass of the atom or molecule and M is the molar mass of the atom or molecule.

here, w=0.273g and M=14g

Substituting,

n=
`(0.273)/(14)` =).0195 moles