2. in an experiment, the efficiency of oxygen exchange across the plasma
membrane is being assessed in four artificial red blood cells. the table
above lists some properties of those artificial cells. other conditions being
equal, which artificial cell is predicted to be the most efficient in exchanging
oxygen with the environment by diffusion?
a. the cuboidal cell
b. the tetrahedral cell
c. the cylindrical cell
d. the spherical cell

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answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.