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Stoichiometry - Engineering

Q1:

Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).

A °API = 200(G - 1)

B °API = (141.5/G) - 131.5

C °API = (140/G) - 130

D °API = 145 - (145/G)

ANS:B - °API = (141.5/G) - 131.5

The correct relation for specific gravity (đēG) on the API (American Petroleum Institute) scale is: °API=141.5đē−131.5°API=G141.5​−131.5 This equation is used to convert specific gravity to the API gravity scale, which is commonly used in the petroleum industry to measure the density of petroleum liquids. So, the correct relation is: °API=141.5đē−131.5°API=G141.5​−131.5