Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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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.
(1) A rectangular block of wood has the following dimensions: 10.0 cm x 5.00 cm x 4.00 cm. The block weight 100 g. What is the density of the block of wood?
(2) What is the mass of a 400-mL sample of ethyl alcohol if its density is 0.8 g/mL?
A piece of metal that is a cube with sides of 1.66 cm has a mass of 69.000 g. Calculate the density (in g/cm^3) of the object.
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- Bromine is a red-brown liquid with a density of 3.10 g/mL. A sample of bromine weighing 88.5 g occupies what volume?arrow_forwardAlthough the preferred SI unit of area is the square meter, land is often measured in the metric system in hectares (ha). One hectare is equal to 10,000 m2. In the English system, land is often measured in acres (1 acre = 160 rod2). Use the exact conversions and those given in Exercise 47 to calculate the following. a. 1 ha = __________ km2 b. The area of a 5.5-acre plot of land in hectares, square meters, and square kilometers c. A lot with dimensions 120 ft by 75 ft is to be sold for 6500. What is the price per acre? What is the price per hectare?arrow_forwardYou have two identical boxes with interior dimensions of 8.0 cm 8.0 cm 8.0 cm. You completely fill one of the boxes with wooden spheres that are 1.6 cm in diameter. The other box gets filled with wooden cubes that are 1.6 cm on each edge. After putting the lid on the filled boxes, you then measure the density of each. Which one is more dense?arrow_forward
- The longest river in the world is the Nile River with a length of 4145 mi. How long is the Nile in cable lengths, meters, and nautical miles? Use these exact conversions to help solve the problem: 6 ft = 1 fathom 100 fathoms = 1 cable length 10 cable lengths = 1 nautical mile 3 nautical miles = 1 leaguearrow_forwardThe active ingredient of aspirin tablets is acetylsalicylic acid, which, has a density of 1.4 g/cm3. In a lab class, a student used paper chromatography to isolate another common ingredient of headache remedies. The isolated sample had a mass of 0.384 g and a volume of 0.32 cm3. Given the data in the following table, what was the other ingredient in the headache remedy? Density Values for Potential Headache Remedies Compound Density (g/cm3) White table sugar 0.70 Caffeine 1.2 Acetylsalicylic acid 1.4 Sodium chloride 2.2arrow_forwardThe density of liquid chloroform is 1.48 g/mL. What is its density in units of lb/in3? (2.54 cm = 1 in., 2.205 lb = 1kg)arrow_forward
- 36) An empty beaker weighs 30.51 g.30.51 g. When completely filled with water, the beaker and its contents have a total mass of 301.25 g.301.25 g. What volume does the beaker hold? Use ?=1.00 g/mLd=1.00 g/mL as the density of water. volume: mL How much would the beaker and its contents weigh if it was completely filled with mercury? The density of mercury is ?=13.5 g/mL.d=13.5 g/mL. total mass: garrow_forwardA rectangular solid measures 10.0 cm by 4.1 cm by 2.0 cm. The mass of this solid is 98.4 g. Calculate the density of the solid in g/mL.arrow_forwardOne cubic centimeter (1.0 cm3) of water has a mass of 1.0 x 10 -3 kg. Determine the mass of 1.0 m3 of water.arrow_forward
- A.Measurement of the density of water.Weigh a small beaker (degree of precision?). Place about 25 mL of water in a 50 mL graduated cylinder and record its volume (degree of precision?). Pour the water into the beaker and weigh the beaker and water together. From these data, calculate the density of the water, giving your answer with the proper number of significant figures.Volume of water in cylinder23.5 mLMass of empty beaker75.360 gMass of beaker with water 99.030 gMass of water in beaker ______gDensity of water g/mLarrow_forwardA block of wood weighs 64.02 g and has the following dimensions: length of 15.0 cm, width of 11.0 cm, and thickness of 5.50 cm.arrow_forwardIn determining the density of olive oil (0.918 g/mL of 20°C), one student took exactly 25.00 mL and found the mass to be 22.95 g. A second student took exactly 50.00 mL and found the mass to be 45.90 g. Will each student arrive at the same value for the density? Do each calculation and explain the result.arrow_forward
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