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102 solutions

Density

Q. A cubic piece of metal measures 5.00 cm on each edge. If the metal is nickel, whose density is 8.90 g/cm3, what is the mass of the cube?

Solved • Feb 5, 2020

Density

Q. Suppose now that you wanted to determine the density of a small crystal to confirm that it is phosphorus. From the literature, you know that phosphorus has a density of 1.82 g/cm3. How would you prepare 20.0 mL of the liquid mixture having that density from pure samples of CHCl3 (d = 1.492 g/mL) and CHBr3 (d = 2.890 g/mL)? (note: 1 mL = 1 cm3).

Solved • Feb 3, 2020

Density

Q. Consider the following: you mix 6.50 mL CHCl3 (d=1.492 g/ml) and 6.90 mL of CHBr3 (d=2.890g/mL) giving 13.4 mL solution. What is the density of the mixture g/ml?

Solved • Feb 2, 2020

Density

Q. The density of silver is 10.5 g/cm^3. What is the mass (in kilograms) of a cube of silver that measures 0.72 m on each side?

Solved • Jan 31, 2020

Density

Q. What is the density of lead (in g/cm3) if a rectangular bar measuring 0.50 cm in height, 1.55 cm in width, and 25.00 cm in length has a mass of 219.6 g? Express your answer using two significant figures.

Solved • Jan 31, 2020

Density

Q. Aspirin has a density of 1.40 g/cm^3. What is the volume (in cubic centimeters) of an aspirin tablet weighing 2.1x10^2 mg? Express your answer using two significant figures. Of a tablet weighing 343 lb? Express your answer using three significant figures.

Solved • Jan 31, 2020

Density

Q. Three liquids of different densities are mixed. Because they are not miscible (do not form a homogeneous solution with one another), they form discrete layers, one on top of the other. If the three liquids are placed in the test tube, in what order, from bottom to top, will they arrange themselves?

Solved • Jan 29, 2020