Calculate the volume in cm3 of a 265 g block of aluminum

A sample of iron bar has a density of 7.87g/in^3. If the bar measures out to be 17.1mm x 6.6mm x 5.3mm, what is the mass of the iron bar in kg?

A solid occupies a volume of 0.0103 cm3 and has a mass of 16.8 mg. To the proper number of significant figures, what is the density of this object in g/cm3?

Ethanol is a common laboratory solvent and has a density of 0.7890.789 g/mL. What is the mass, in grams, of 121121 mL of ethanol?

Ethanol is a common laboratory solvent and has a density of 0.7890.789 g/mL. What is the mass, in grams, of 147147 mL of ethanol?

If a sample of unknown substance has a mass of 3.50 kg and a volume of 1.30 L, what is the density of the substance when expressed in conventional (but non-SI) units of g/cm3?

Neutron stars form when large stars collapse. They are very dense, having an average density of 4.8x1017 . If we were able to take a piece of a neutron star, what volume in cubic millimeters (mm3) weighs 113,400 kg? Your answer must have the correct number of sig figs.

In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass of our sun, but occupying less space than our moon. Suppose that one of these black holes has a mass of 8×103 suns and a radius equal to one-half the radius of our moon. What is its density in grams per cubic centimeter? The mass of the sun is 2.0×1030kg and the radius of the moon is 2.16×103mi. (Volume of a sphere =43πr3.)

(282.7×105)−(1.100×103)]×2.8990 Express your answer to the appropriate number of significant digits.

In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass of our sun, but occupying less space than our moon. Suppose that one of these black holes has a mass of 1×10^3 suns and a radius equal to one-half the radius of our moon. What is its density in grams per cubic centimeter? The mass of the sun is 2.0×10^30 kg and the radius of the moon is 2.16×10^3 mi (Volume of a sphere =4/3πr^3)