What Is the Mole Fraction of Oxygen in a Gas

question 28

Multiple Choice

What is the mole fraction of oxygen in a gas mixture that is 37% oxygen and 63% nitrogen by volume?

• A)0.34
• B)0.37
• C)0.25
• D)0.52

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Definitions:

Structure Pointer Operator

The arrow (->) operator in C and C++, used to access members of a structure through a pointer to the structure.

Equal Precedence

A term used in programming to describe operators that have the same level of priority in the order of evaluation.

Member Operator

This usually refers to operators that access elements or functions within structured data types, like the dot (.) operator in C++ used for object members.

Structure Pointer Operator

An operator used in programming languages like C to access members of a structure through a pointer.