A material that allows an electric current to flow through it is an electrical conductor. A material through which an electric current cannot flow easily is called an insulator. Which claim best describes the difference between an insulator and a conductor?

Explanation:

Assume 100 g of acid. Breaking it down into its components, there are

26.68

⋅

g

12.01

⋅

g

⋅

m

o

l

−

1

⋅

C

;

2.24

⋅

g

1.00794

⋅

g

⋅

m

o

l

−

1

⋅

H

;

71.08

⋅

g

16.00

⋅

g

⋅

m

o

l

−

1

⋅

O

=

C

:

H

:

O

=

2.22

:

2.22

:

4.44

=

1

:

1

:

2

.

Therefore, empirical formula of oxalic acid is

C

H

O

2

. If its molecular mass is

90.03

⋅

g

⋅

m

o

l

−

1

, what is its molecular formula?