The quantity called mass density is the mass per unit volume of a substance. express the following mass densities in si units.
a. aluminium, 27 x 10^-3 kg/cm^3
b. alcohol, 0.81 g/cm^3

International units for density correspond to

For the first case we must convert the cubic centimeters to cubic meters and for the second case both the mass and volume units.

Remember that

PART A) Aluminum

PART B) Alcohol

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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i think it would be 5