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ozzi
3 years ago
11

Gas chromatography can be useful in determining what about paint?

Chemistry
2 answers:
dexar [7]3 years ago
4 0
Gas chromatography is a type of <span>chromatography that is usually used in analytic chemistry in order to analyze and separate the compounds that can be vaporized without decomposition.

Based on this:
</span><span>Gas chromatography can be useful in determining the chemical composition of paint.</span>
kumpel [21]3 years ago
4 0

Answer:

Gas chromatography can be useful in determining what about paint?

Its color

 

Its pigment

 

Its age

 

<u>Its chemical composition</u>

<u></u>

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vova2212 [387]

Answer:

Q = -18118.5KJ

W = -18118.5KJ

∆U = 0

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∆S = -60.80KJ/KgK

Explanation:

W = RTln(P1/P2)

P1 = 1bar = 100KN/m^2, P2 = 1500bar = 1500×100 = 150000KN/m^2, T = 23°C = 23 + 273K = 298K

W = 8.314×298ln(100/150000) = 8.314×298×-7.313 = -18118.5KJ ( work is negative because the isothermal process involves compression)

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∆S = Q/T

Mass of water = 1kg

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∆S = (-18118.5KJ/Kg)/298K = -60.80KJ/KgK

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Carbon dioxide reacts with lithium hydroxide in a 1 : 2 mole ratio. Set up a proportion:

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Then, find x: <span>12=40x

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