Question

A natural gas has the following composition, all figures in volumetric %, CH4 = 83.5;
C2H6 = 12.5; N2 = 4. Calculate a) composition in mole% b) composition in wt% c)
Average molecular weight.​

Answer 1

Answer:

This is a long question, so I will show only the calculations for methane. You can use them as a pattern for the ethane and nitrogen calculations.

The results are in the table below.

l

Item

m

m

CH

4

m

C

2

H

6

m

N

2

m

l

Total

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

Vol. %

m

m

l

83.6

m

l

l

12.5

m

m

l

4

m

m

l

100

Mole %

m

l

l

l

83.6

m

l

l

12.5

m

m

l

4

m

m

l

100

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

Moles

m

m

l

l

83.6

m

l

l

12.5

m

m

l

4

m

m

l

100

Mass/g

m

1341

m

m

375.8

m

110

m

m

1829

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

Mass %

m

l

l

l

73.3

m

l

l

20.6

m

m

l

6

m

m

l

100

Explanation:scientific fact proven