Asample of liquefied natural, lng, from alaska has the following molar composition: 3.9% c2h6, 1.1% c3h8, 1.1% co2, and the rest ch4. determine (a) the average molecular weight of the lng mixture. (b) the weight fraction of ch4 in the mixture. (c) the lng is heated to 422 k and 148 kpa, and vaporizes completely. estimate the density of the gas mixture under these conditions.

a) 17,20

b) 87,57%

c) 0,7259

Explanation:

a) With molar composition of LNG the average molecular weight is:

3,9%×30,07 + 1,1%×44,1 +1,1%×44,01 + 93,9%×16,04 = 17,20

b) The weight fraction of CH₄ is:

×100 = 87,57%

c) It is possible to use ideal gas law thus:

= δ

Where:

P is pressure: 148 kPa

MW is molecular weight: 17,20

R is gas constant: 8,31

T is temperature: 422K.

And δ is density. Replacing you will obtain:

δ = 0,7258

I hope it helps!

lol idk man i guess u gotta ask bill nye the science guy

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.