What does the ideal gas law allow a scientist to calculate that the other gas laws do not?

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Answer 1 · 2015-05-26T18:41:52

Quick answer: nothing.

There are four gas laws.

Volume is inversely proportional to pressure, or #PV = k#.

Volume is directly proportional to temperature, or #V/T = k#

Gay-Lussac's or Amonton's Law

Pressure is directly proportional to temperature, or #P/T = k#

Volume is directly proportional to the number of moles, or #V/n = k#

Put them all together, and you get

#(PV)/(nT) = k# or #PV = nkT#

We usually replace the constant #k# with the universal gas constant #R# and write the equation as

#PV = nRT#

antranik.org

The Ideal Gas Law is simply a combination of the other four gas laws.