The normal boiling point of propane is -42.1 and the normal boiling point of butane is -0.5 calculate the mole fraction of the propane in a liquid mixture that boils at -31.2 at 1 atm.

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API assigns a default value of Hs/D = 0.5 and an assumption of αR = αS , resulting in the  32.7 35.2 42.1 50.6 59.6 67.2 70.3 69.2 62.6 51.1 41.2 34.5.

What is API ?

Communication between two or more computer applications is made possible via application programming interfaces (APIs). It is a kind of software interface that provides a service to other software. An API specification is a document or a standard that outlines how to create or use a connection or interface of this type. The term "implement" or "expose" refers to a computer system that conforms to this standard. A specification or an implementation may both be referred to as an API.

An application programming interface, as opposed to a user interface, links computer systems to people, while a user interface does the opposite.

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