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What is the API gravity of a substance with specific gravity 1?

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What is the API gravity of a substance with specific gravity 1?

(a) 131.5

(b) 141.5

(c) 10

(d) 50

I have been asked this question in semester exam.

My doubt is from Specific Gravity in portion Moles, Density & Concentration of Basic Chemical Engineering

1 Answer

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Best answer
Right choice is (c) 10

To explain I would say: API = (141.5/sp.gr) – 131.5 = 141.5/1 – 131.5 = 10.

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