Chapter 1, Problem 1.94E

A sample of a bright blue mineral was weighed in air, then weighed again while suspended in water. An object is buoyed up by the mass of the fluid displaced by the object. In air, the mineral weighed 7.35 g; in water, it weighed 5.40 g. The densities of air and water are 1.205 g/L and 0.9982 g/cm3, respectively. What is the density of the mineral?

An aluminum alloy used in the construction of aircraft wings has a density of 2.70 g/cm3. Express this density in SI units (kg/m3).

1.87 A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. what information would you need to look up and how would you determine the percentage of ethanol in this solution?

What is the mass of a 43.8-mL sample of gasoline, which has a density of 0.70 g/cm3?

Which occupies a larger volume, 600 g of water (with a density of 0.995 g/cm3) or 600 g of lead (with a density of 11.35 g/cm3)?

An irregular-shaped solid was placed into a graduated cylinder containing 50.2 mL of water.The volume rose to 55.4 mL. a.  Calculate the volume of the solid. mL b.  If the solid weighed 39.52 g, calculate its density. g/mL   The following dimensions were measured for a cube: L=2.05 cm, W=2.00 cm, H=1.95 cm. a.  Calculate the volume of the cube using correct significant figures   cm3 b.  The mass of the cube was measured to be 71.16 g.Determine the density of the cube.  g/cm3   Ice floats on water. What can be said about the density of ice compared to that of liquid water?         A. The melting ice pushes the denser than water ice to the surface.   B. Since ice and water are made up of the same compound, they have the same density.   C. Since water is warmer and heat rises, it lifts up the denser ice.   D. The water must be denser than the ice.   E. Ice is more dense than water.

44. Convert the following. Express your answers in scientific notation. a. 7.5 x 10' J to kilojoules b. 3.9 × 10° mg to decigrams c. 2.21 X 10 ª dL to microliters 45. Light travels at a speed of 3.00 × 1010 cm/s. What is the speed of light in kilometers/hour?

4. What volume of silver metal will weigh exactly 25.0 kg? The density of silver is 10.5 g/cm

one box of iron nails contains 85 nails and weighs 0.260lbs lbs total. The density of iron is 7.86g/cm^3 . if 35 nails are added to a graduated cylinder containing 17.65mL of water what is the new level of water in mL in the cylinder.