The volume of an irregularly shaped solid can be determined by immersing the solid in a liquid and measuring the volume of liquid displaced. Find the volume and density of the following: a. An irregular piece of the mineral quartz is found to weigh 12.4 g. It is then placed into a graduated cylinder that contains some water. The quartz does not float. The water in the cylinder was at a level of 25.2 mL before the quartz was added and at 29.9 mL afterward. The volume of a sample of lead shot is determined using a graduated cylinder, as in part (a). The cylinder readings are 16.3 mL before the shot is added and 21.7 mL after. The sample of shot weighs 61.0 g.

The volume of an irregularly shaped solid can be determined by immersing the solid in a liquid and measuring the volume of liquid displaced. Find the volume and density of the following: a. An irregular piece of the mineral quartz is found to weigh 12.4 g. It is then placed into a graduated cylinder that contains some water. The quartz does not float. The water in the cylinder was at a level of 25.2 mL before the quartz was added and at 29.9 mL afterward. The volume of a sample of lead shot is determined using a graduated cylinder, as in part (a). The cylinder readings are 16.3 mL before the shot is added and 21.7 mL after. The sample of shot weighs 61.0 g.

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter7: Ionic Compounds And Metals

Section: Chapter Questions

Problem 124A

See similar textbooks

Similar questions

5. The volume of an irregularly shaped solid can be determined by immersing the solid in a liquid and measuring the volume of liquid displaced. Find the volume and density of the following: a. An irregular piece of the mineral quartz is found to weigh 12.4 g. It is then placed into a graduated cylinder that contains some water. The quartz does not float. The water in the cylinder was at a level of 25.2 mL before the quartz was added and at 29.9 mL afterward. b. The volume of a sample of lead shot is determined using a graduated cylinder, as in part (a). The cylinder readings are 16.3 mL before the shot is added and 21.7 mL after. The sample of the shot weighs 61.0 g. c. A sample of coarse rock salt is found to have a mass of 11.7 g. The volume of the sample is determined by the graduated cylinder method described in (part a), but kerosene is substituted for water because the salt will not dissolve in kerosene. The cylinder readings are 20.7 mL before adding the salt and 26.1 mL after.
Use the References to access important values if needed for this question. Read the data points from the graph and complete the table below. 25 20 15 10 3 Submit 3. 2.
2. Discussion Questions: a. How would you measure the mass of a solid if it existed as a powder or crystals? What can you use to contain the crystals on the balance? b. Compare the precision of the analytical balance to the top-loading balance. Do more precise instruments give more or less significant figures for measurements? Which would be the better balance to use for experiments?
15. A solid compound has a mass of 52.20 g. You scrape 14.85 g worth of material off the compound for testing. What percentage of compound is left over?
7. How many moles are contained in each of the following? A. 21.0 gg CaCa Express your answer using three significant figures. B. 5.30 gg SS Express your answer using three significant figures. C. 40.0 gg H2OH2O Express your answer using three significant figures.
In another experiment, you determine that a sample of acetic acid consists of 56.8% oxygen. What is your percent error?A. 3.50% D. 12.6%B. 6.57% E. 2.06%C. 1.07%
15. In preparing a certain ointment, a pharmacist used 28.35 grams of zinc oxide instead of the 31.1 grams called for. Calculate the percentage of error on the basis of the desired quantity.
a. b. A student records the following data in the laboratory when determining the percentage of water in an unknown hydrate. Mass of container Mass of container and hydrate Mass of container and contents after: Pirst heating 47.952 % 49.837 % 49.500 % Second heating Third heating What is the percentage of water in this student's unknown? Based on the values obtained in the three heating's above, do you think the student should have confidence in his results? Why? What do you think he should do to be more confident in his result? 48.918 g 48.811 g
1. 0.31 liters of kerosene is added to 1.452 liters of used cooking oil. In how many significant figures should the total volume be expressed? a. 2 b. 3 2. Which can result in a homogneous mixture? carbon is dissolved in iron oil is dissolved in water a. b. 3. Which is true about nitric acid. HNO3? a. It is a covalent compound. 5. a. 0.48 b. 0.59 C. 4 d. 5 b. The hydrogen ion is the anion. 4. Iron reacts with oxygen to form iron oxide (Fe₂O3). of iron oxide? C. d. a. b. isotopes C. salt dissolved in alcohol None of the choices result in a homogenous mixture C. d. The nitrogen atom in the compound has a negative charge. d. Both a and c How many grams of O₂ are needed to produce 2 grams 0.72 Answer is not among the choices has the same number of protons with number of neutrons ions C. acids d. hydrates
chemical tests were used to differentiate between the two substances in the mixture. Which of the following physical properties could also have been used conveniently? a. Density. b. Color c. Hardness Explain your answer.
P. The density of a material can be used to calculate the volume of an object if its mass is known. Likewise, the mass can be calculated if the density and volume are known. A pre-1964 quarter, made predominantly of silver (density = 10.5 g/ml), was determined to have a mass of 6.25 g. What is the volume of the quarter? a) 0.595 mL b) 1.68 mL c) 6.25 mL d) 65.6 F10 FIL gO F3 F8 000 F4 F7 F5 F6 F2 & * $ 4 #3 % 7 8 Y U
Is it nec mass? why? 8 Observe figure 11: calculate: a - The mass of water. b- The volume of oil. -The mass of oil. d- The relative density of oil. 20 50 20 water 40 20 oil Fig. 11.