Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash borosilicate glass, which has a density of 2.162.16 g/mL. A 4.0744.074 g glass fragment was recovered from a suspect's clothing. When the fragment was placed into a graduated cylinder filled with water, 1.341.34 mL of the water was displaced. Calculate the density of the glass fragment.
The density of a cooking oil is 0.92g/cm^3 calculate the mass in grams g for an oil droplet has a volume of 5.34 x 10^-4 cm^3
2. You purchase a rectangular piece of metal that has dimensions 5.0 X 15.0 X 30.0 mm and mass 43.43 g. The seller tells you that the metal is gold. To check this, you compute the average density of the piece. What value do you get? Were you cheated?
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- A 124-g sample of a pure liquid, liquid A, with a density of 3.00 g/mL is mixed with a 40.8-mL sample of a pure liquid, liquid B, with a density of 2.00 g/mL. What is the total volume of the mixture? (Assume there is no reaction upon the mixing of A and B, and volumes are additive.)arrow_forwardIf 16.1 grams of an unknown metal occupy 4.66 cm^3, how many grams of the metal will occupy 11.3 cm^3?arrow_forwardTo identify the substance, a chemist determined its density. By pouring a sample of the liquid into a graduated cylinder, she found that the volume was 35.1 mL. She also found that the sample weighed 30.5 g. What was the density of the liquid? What was the substance?arrow_forward
- Determine the density (in g/cm3) of a metal alloy (a mix of metals) that has a mass of 56.68g and the dimensions of 2.9 in, 2.4 in, and 3.0 inarrow_forwardA student measures the mass of a piece of aluminum, and finds it to be 8.945 g. She finds that the volume of the aluminum sample is 3.3 cm^3. Find the density of the aluminum sample.arrow_forwardA pycnometer is a device used to measure density. It weighs 20.455 g empty and 31.486 g when filled with water (d=1.00 g/cm3). Pieces of an alloy are put into the empty, dry pycnometer. The mass of the alloy and pycnometer is 28.695 g. Water is added to the alloy to exactly fill the pycnometer. The mass of the pycnometer, water, and alloy is 38.689 g. What is the density of the alloy?arrow_forward
- An antacid tablet weighing 0.938 g contained calcium carbonate as the active ingredient, in addition to an inert binder. When an acid solution weighing 56.404 g was added to the tablet, carbon dioxide gas was released, producing a fizz. The resulting solution weighed 57.129 g. How many grams of carbon dioxide were produced?arrow_forwardA cube of an unknown metal measures 0.250 cm on one side. The mass of the cube is 0.095 g. Which of the following is most likely the unknown metal? niobium 8.57g/cm^3 rhodium 12.4g/cm^3 copper 8.96g/cm^3 vanadium 6.11g/cm^3 zirconium 6.51g/cm^3arrow_forwardEthanol has a density of 0.789 g cm‐3. Calculate the volume in mL that must be poured into a measuring cylinder to give 19.8 g of ethanol. Note 1 mL = 1 cm3.arrow_forward
- A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder, the pycnometer weighs 84.60 grams. When the insoluble powder and liquid were combined, the pycnometer weighed 172.8 grams. If the density of the liquid is 0.85 g/cm3, what is the density of the insoluble powder? 2.1 g/cm3 26 g/cm3 3.1 g/cm3 O None of the Above FULIarrow_forwardAn empty vial weighs 59.43 g. If the vial weighs 158.65g when filled with liquid mercury (d=13.53 g/cm^3), what is the volume of mercury?arrow_forwardA sample of metal pellets weighs 13.54 g. When this sample was placed in a 100-mL graduated cylinder, which contained 25.5 mL water, the new volume (of water and pellets combined) was 27.0 mL. If the metal is one of the solids listed in Table 1, what is the identity of the metal? Show your calculations and use the correct rules for determining significant figures in calculations as shown in the background section. Explain your identification.arrow_forward
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