Mark these statements as being True or False.
_______(a)The units of mass diffusivity, heat diffusivity, and momentum diffusivity are all the same.
_______(b) If the molar concentration (or molar density) C of a mixture is constant. then its density p must also be constant.
_______(c) If the mass-average velocity of a binary mixture is zero, then the mole-average velocity of the mixture must also be zero.
_______(d) If the mole fractions of A and B of a mixture are both 0.5, then the molar mass of the mixture is simply the arithmetic average of the molar masses of A and B.
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