A general chemistry student found a chunk of metal in the basement of a friend's house. To figure out what it was, she used the ideas just developed in class about density. She measured the mass of the metal to be 340.3 grams. Then she dropped the metal into a measuring cup and found that it displaced 15.7 mL of water. Calculate the density of the metal. Density g/ml. Densities of Some Common Substances Substance Density (g/mL) Water 1.00 Aluminum 2.72 Chromium 7.25 Nickel 8.91 Copper 8.94 Silver 10.50 Lead 11.34 Mercury 13.60 Gold 19.28 Tungsten 19.38 Platinum 21.46 This metal is most likely

A general chemistry student found a chunk of metal in the basement of a friend's house. To figure out what it was, she used the ideas just developed in class about density. She measured the mass of the metal to be 340.3 grams. Then she dropped the metal into a measuring cup and found that it displaced 15.7 mL of water. Calculate the density of the metal. Density g/ml. Densities of Some Common Substances Substance Density (g/mL) Water 1.00 Aluminum 2.72 Chromium 7.25 Nickel 8.91 Copper 8.94 Silver 10.50 Lead 11.34 Mercury 13.60 Gold 19.28 Tungsten 19.38 Platinum 21.46 This metal is most likely

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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.
Macmillan Learning At a resting pulse rate of 79 beats per minute, the human heart typically pumps about 69 mL of blood per beat. Blood has a density of 1060 kg/m . Circulating all of the blood in the body through the heart takes about 1 min for a person at rest. Approximately how much blood is in the body? volume of blood in body: On average, what mass of blood does the heart pump with each heart beat? mass per heart beat: m³ 3 kg
The density of a substance can change with temperature. The graph displays the density of water from -150 °C to 100 °C. Examine the graph and answer the questions. A 1.00-L. sample of water is heated from 1 °C to 100 °C. What is the volume of the water after it is heated? The Density of Water as a Function of Temperature 1,010- 1,000 990 980 970 960 950- 940 - 930 920 910 -150 -100 -50 50 100 Density (kg/m³)
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from the chart to see what the normal person can see from 100 feet away. In Britain, eye doctors use 37) In the United States, vision is tested by having the person attempt to read letters at a certain distance person's vision who scored 20/100 vision on the United States scale(1 inch32.54 cm)? a sìmilar test, however, the distance is measured in meters. For example, poor vision is 20/100, meaning that this person must be 20 feet away measured in feet. person's vision who scored 20/100 vision on the Und tates scale(1 inch32.54 cm)? How would a British doctor record a a) 5.3/28 b) 6.1/31 c) 7.4/38 ) 8.5/42
Set up the problem and calculate the mass of 16.6 mL of gold. See the table below for the density of gold. Densities of Some Common Substances Substance Water 1.00 Aluminum 2.72 Chromium 7.25 8.91 8.94 10.50 11.34 13.60 19.28 19.38 21.46 Nickel Copper Silver Lead Mercury Gold Density (g/mL) Tungsten Platinum
The density of iron is 7.9 g/mL. a) What is the mass of a sample of iron that has a volume of 7.1 mL? b) what is the volume of a sample of aluminum that has a mass of 34.305 g? Fill in blanks.
A dosage descibes the amount of medication administered over a specified period of time with a certain frequency of dosing. A dose descibes the amount of medication administered at one time. Most drugs are prescribed to pediatric patients at a dosage based on the patient's weight. For pediatric patients, the dosage of the antibiotic cephalexin is 24.5 mg/kg/day administered in 4 doses throughout the day. How many milligrams of cephalexin would a 61.0 lb child receive at each dose? (2.2 lb = 1 kg) A total of 679 mg cephalexin should be administered to the 61.0 lb patient each day. Calculate the amount of cephalexin in milligrams that should be administered at each of the four doses throughout the day. amount of cephalexin per dose: mg/dose
Using an automatic delivery pipet, a student in the lab dispenses 356 µL of their unknown liquid into a 10 mL Erlenmeyer flask. The mass of the empty flask was 8.471 g. After the liquid was added, the flask and contents weighed 8.785 g. What is the density (in g/mL) of the liquid?
00 G. You have two objects made of the same substance. Object 1 is a cube with a mass of 246.5 g. You measure the side of the cube using a ruler and find it to be 3.17 cm. Object 2 is a sphere with a mass of 123.3 g. You find the volume of the sphere using water displacement. The volume of the water in a graduated cylinder initially is 120.0 mL, and when the sphere is added the new volume is 135.8 mL. Which one of the following is the best reason for the difference between the two calculated densities? A) Different numbers of significant figures were used in each measurement. B) Uncertainty in measurement associated with the equipment. C) Errors in how the density was calculated. D) The units used to measure the densities are not the same. o search a 77°F delete 114 144 5. 6. D.
1. A cup of gold-colored metal beads was measured to have a mass of 425 grams. By water displacement, the volume of the beads was calculated to be 48.0 cm³. Given the following densities, identify the metal. Gold: 19.3 g/mL; Copper=8.86g/mL; Bronze= 9.87 g/mL
The speed limit on many U.S. highways is 65 mi/hr. Convert this speed into each alternative unit. km/day Express your answer using two significant figures. ft/s Express your answer using two significant figures. m/s Express your answer using two significant figures. yd/min Express your answer using two significant figures.