Question

Calculate the number of mole in 92 gram of ethyl alcohol

Answer 1

Answer:

Well, ethanol has a molar mass of  

46.07

⋅

g

⋅

m

o

l

−

1

....and there are  

6

×

H

+

1

×

O

+

2

×

C

=

9 atoms per EtOH molecule

Explanation:

And thus we have a molar quantity of  

92

⋅

g

46.07

⋅

g

⋅

m

o

l

−

1

≅

2.0

⋅

m

o

l

And it is a fact that one mole of stuff contains  

6.022

×

10

23

individual molecules....and so we have approx...

2

⋅

m

o

l

×

6.022

×

10

23

⋅

m

o

l

−

1

×

9

⋅

atoms

≅

18

⋅

N

A

atoms, where  

N

A

≡

Avocado number....