For a binary mixture of species A and B, the mass average velocity is

1.	For a binary mixture of species A and B, the mass average velocity is defined as
A.	2 p<sub>a</sub> V<sub>a</sub> + p<sub>b</sub> V<sub>b</sub>/ p
B.	p<sub>a</sub> V<sub>a</sub> + p<sub>b</sub> V<sub>b</sub>/ p
C.	p<sub>a</sub> V<sub>a</sub> + 2 p<sub>b</sub> V<sub>b</sub>/ p
D.	p<sub>a</sub> V<sub>a</sub> + p<sub>b</sub> V<sub>b</sub>/ 2 p
Answer» C. p<sub>a</sub> V<sub>a</sub> + 2 p<sub>b</sub> V<sub>b</sub>/ p

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