Homework 1

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SUNY Canton *

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107

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Chemistry

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Feb 20, 2024

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1220 Coffeen St. Student Information Watertown, NY 13601 I wviy]CC - Student I Learning Online Courses I Community 2022 Spring ONLIB_CHE_107_1 (CHE_107_E1) - Intro to Chemistry 1 Homework Review Test Submission: Homework#1 Review Test Submission: Homework#1 User Julia Michelle Narrigan Course 2022_Spring_ONLIB_CHE_107_1 (CHE_107_E1) - Intro to Chemistry 1 Test Homework#1 Started 2/4/22 10:34 PM Submitted 2/4/22 10:44 PM Due Date 2/4/22 11:59 PM Status Completed Attempt Score 9.25 out of 10 points Time Elapsed 9 minutes Results Displayed All Answers, Submitted Answers, Correct Answers, Incorrectly Answered Questions Question 1 - Which of the following is true of ice, water, and steam? —n Selected Answer: @ cC They are the same substance in different physical states. Answers: a. They are three different chemical substances. b. They are the same substance in different chemical states. @ cC. They are the same substance in different physical states. d. They are the same substance in different chemical and physical states. I(‘MI s e B I D 0 N N % 1 e’ A N N N 0.25 out of 0.25 points Question 2 Given the calculation 5.63 + 2.302 3.1 = ?, what 1s the answer reported to the correct number of significant figures? Selected Answer: @ d. 4.8 0.25 out of 0.25 points
Answers: a.4.83 b, 4.832 c. 49 @ d. 4.8 Question 3 0.25 out of 0.25 points j Iron has a density of 7.874 g/cm 3 What is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm? Selected Answer: &, ¢, 4724 g Answers: a. 7629 g b, 60.00 g c.9448¢g o d.4724¢ Question 4 Which of the following represents a physical change? Selected Answer: &, 5, boiling of water Answers: @ a. boiling of water b. decomposition of a dead organism c. both boiling of water and decomposition of a dead organism d. neither boiling of water or decomposition of a dead organism Question 5 The standard metric unit of volume, the liter, is equal to which of the following? Selected Answer: 3 Q b. 10° ym Answers: 3 a. 1l um 0.25 out of 0.25 points 0 out of 0.25 points
Question 6 0.25 out of 0.25 points _. Given the calculation: (2.33 x 10 7 ) x (6.7 x 10 5 ) = ?, what is the answer reported to the correct number of significant figures? Selected Answer: @ b. 1.6 x 1013 Answers: a. 1.5611 x 1013 @ b, 16x 101 c 156 x 1013 q.2x1013 Question 7 0.25 out of 0.25 points In determining the density of a liquid, the following measurement was made. How many significant figures are shown in this measurement? Selected Answer: @ a. 5
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Answers: @ a’d d. none of these Question 8 Which state of matter is highly compressible? Selected Answer: @ c.8as Answers: 3. solid b. liquid @ c 8as d. none of them Question 9 At what temperature do the temperatures on the Celsius and Fahrenheit scales have the same numerical value? v Selected Answer: o, 5 —40 Answers: @ a. —40 b.0 c. 32 d. atno value Question 10 0.25 out of 0.25 points 0.25 out of 0.25 points 0.25 out of 0.25 points A 100-mL beaker is a common piece of laboratory glassware. What is this volume in the English system of units? [1 quart = 0.946; 1 liter = 32 {1 oz] Selected Answer: &, ¢ 3.38 fl oz Answers: a.0.13floz b.33.8 gt
) c.338floz d.13qt Question 11 0.25 out of 0.25 points . Given the calculation: (3.83 x 10 -3 ) x (7.777 x 10 7 ) = ?, what is the answer reported to the correct number of significant figures? Selected Answer: G a. 298 x 10° Answers: G a. 798 x 10° b, 2.978 x 10° ¢ 0.298 x 100 4.0.2978 x 106 Question 12 0.25 out of 0.25 points Mercury is the only metal that is a liquid at room temperature. The density of mercury is 13.6 g/cm 3 What is the mass, in pounds, of 1.00 quart of j mercury? [1 liter = 1.057 quart; 1 pound = 453.6 grams] Selected Answer: @ b. 2841b Answers: a.0.0284 1b @ b. 284 1b c.31.71b d.3531b Question 13 0.25 out of 0.25 points The boiling point of liquid oxygen is 90.2 K. What is this temperature on the Celsius scale? Selected Answer: &, ¢ —182.8°C Answers: a.363.2°C b, 171°C
¢ 25°C «, d.-182.8°C Question 14 0 out of 0.25 points —m A jeweler offers a pure gold coin of 2 g to a customer. What is the volume of the coin? (Take the density of gold to be 19.3 g/cm3 J) Selected Answer: @ d.386 cm Answers: 4. 0.404 cm’ @, b, 0.104 cm’ ¢ 9.65 cm3 4. 38.6 cm’ Question 15 0.25 out of 0.25 points How many yards make a kilometer? [1 inch = 2.54 cm] Selected Answer: o, p, 1,094 yards Answers: a. 994 yards @ b. 1,094 yards c. 1,294 yards d. 1,394 yards Question 16 0 out of 0.25 points If gasoline costs $3.79 per gallon, what is its cost per liter? [1 quart = 0.946 liter] : Selected Answer: ¢ 5 1.00 2 Answers: a. 1.00 g
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379¢ d.739¢ Question 17 0.25 out of 0.25 points What is the mass of a half-pound hamburger in the metric system? [1 pound = 453.6 grams] Selected Answer: @ b. 227g Answers: a. 227 mg @ b.227g c.0.5kg 4q.0.7814 kg Question 18 0.25 out of 0.25 points Consider the urinometer shown used to make a measurement at 25 °C. What is the density of the liquid shown at the same temperature? o4 Selected Answer: &, p, 1.04 g/mL Answers: a. 1.04 @ b, 1.04 g/mL c. 0.962 4. 0.962 g/mL
e. The density cannot be determined from the given data. Question 19 How many kilograms (kg) are there in 1 microgram ( p g)? Selected Answer: @ b. 1x1072 Answers: 4 1x 10~ o b 1x107 ¢ 1x10° 4. 1x10° Question 20 How many kilometers (km) are there is 1 megameter (Mm)? Selected Answer: @ c. 1x103 Answers: 5 1% 102 b 1x1073 o c 1x10° 4. 1% 102 Question 21 Which of the following is a characteristic feature of matter? Selected Answer: @ c Matter has definite mass and occupies space. Answers: a. Matter has indefinite mass and definite volume. b, Matter has definite mass but does not occupy space. @, c. Matter has definite mass and occupies space. 0.25 out of 0.25 points 0.25 out of 0.25 points 0.25 out of 0.25 points
d. Matter has indefinite mass and indefinite volume. Question 22 _. Titanium has a density of 4.54 g/cm3. What is the mass of 17.3 cm Selected Answer: @c 785¢g Answers: a.38lg b.38.1¢g o C. 78.5 g d.785¢g Question 23 _. Aluminum has a density of 2.70 g/cm 3 Selected Answer: @ d. 1.60L Answers: 5. 0.000625 cm? b, 0.625 cm? ¢ 1.60 cm3 @ d. 1.60 L Question 24 How many micrograms ( | g) are there in 1 centigram ( p g)? Selected Answer: @ c 1x104 : —6 Answers 5. 1x10 b 1x107% . 1x10% . What volume is occupied by a block of aluminum that weighs 4.32 kg? 0.25 out of 0.25 points 0.25 out of 0.25 points 0.25 out of 0.25 points
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g 1x1072 Question 25 0.25 out of 0.25 points An unknown substance has a mass of 56.8 g and a volume of 23.4 mL. What is the density of this unknown substance? Selected Answer: @ c 2.43 g/mL Answers: a. 0411 g/mL b, 2.34 g/mL @ c 2.43 g/mL d.2.50 g/mL Question 26 0.25 out of 0.25 points A certain automobile has an 15-gallon gas tank. What is the volume of this tank in liters? [1 gallon = 4 quarts; 1 quart = 0.946 liter] -4 Selected Answer: &, ¢ 57 L Answers: a.>. 7L b, 60 L d.60.95 L Question 27 0.25 out of 0.25 points Given the calculation: 2.377 + 1.487 + 7.02 = ?, what is the answer reported to the correct number of significant figures? - Selected Answer: @, ¢ 10.88 Answers: a. 10.884 5. 10.89 o ¢ 1088 d.10.9
Question 28 0.25 out of 0.25 points Which state of matter retains its volume but adapts its shape to that of its container? v Selected Answer: @ b. liquid Answers: a. solid @ b, liquid c. gas d. none of these Question 29 0.25 out of 0.25 points An object weighs 70.7 kg. What is the weight of this object in the English system? [1 pound = 453.6 grams] Selected Answer: @ b. 155.86 pounds Answers: a. 32.07 pounds @ b. 155.86 pounds c. 1.56 pounds d. 524.3 pounds Question 30 0.25 out of 0.25 points _ Which of the following is not a chemical change? Selected Answer: &, ¢, evaporation of river water Answers: a. rusting of an iron statue b, burning of paper c. curdling of milk @ d. evaporation of river water Question 31 0.25 out of 0.25 points
How many seconds are there in two 24-hour days? (Assume exactly 24 hours in a day.) 4 Selected Answer: b, 173 10° : 2 Answers 3.7.20 % 10 b, 173 x10° c 2.59 x 100 4. 8.64 x 10 Question 32 Which of the following is a chemical property of water? Selected Answer: @ c Water reacts violently with potassium. Answers: a. Water vapor has no definite volume. p. Water has a density of 1000 kg/m3 : @, c. Water reacts violently with potassium. d. Ice floats in water. Question 33 Which of the following is the correct order of masses? 4 Selected Answer: «, ¢ pg <mg<cg<Mg Answers: a.cg <mg<Mg<ug b.cg <Mg<ug<mg @ c g <mg<cg<Mg d. g <Mg<cg<mg Question 34 The law of conservation of energy states which of the following? 0.25 out of 0.25 points 0.25 out of 0.25 points 0.25 out of 0.25 points
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Selected Answer: &, ¢, none of the these Answers: a. Energy cannot be converted from one form to another. b, Kinetic energy is conserved. c. Potential energy is conserved. @ d. none of the these Question 35 0.25 out of 0.25 points Which of the following is the correct order of lengths? Selected Answer: @ c.nm<pm<cm<m Answers: g.hm <mm < cm < um b, ¢cm <nm < ym < mm @ c.nm<pm<cm<m d. bm <nm < cm < mm Question 36 0.25 out of 0.25 points Scientists consider 298 K to be room temperature. What is this temperature on the Fahrenheit scale? Selected Answer: &, ¢ 76.73°F Answers: a. 87.73°F b. 362.73°F @ c. 716.73°F d. 349.73°F Question 37 0.25 out of 0.25 points Daytime temperatures in a desert can reach 50.0 ° C. What is this temperature on the Fahrenheit temperature scale? Selected Answer: @ b. 122.0°F Answers:
3. 323.0°F @ b. 122.0°F < 150°F d. none of these Question 38 0.25 out of 0.25 points The densities of the coinage metals (copper, silver, and gold) are as follows: = copper = 8.95 g/cm 3 silver = 12.59 g/em 3 gold = 19.32 g/em 3 A sample of material is found to weigh 15.12 grams and have a volume of 1.20 cm 3 The sample could be which of the coinage metals? Selected Answer: &, p, silver Answers: a. copper @ b. silver c. gold Question 39 0.25 out of 0.25 points At the 2008 Olympics, the Jamaican runner Usain Bolt ran the 100-meter dash in world record time of 9.69 seconds. What is this speed in miles per hour? [1 mile = 1.609 km] Selected Answer: o, ¢ 23.1 mph Answers: a. 2.31 mph b. 4.33 mph @231 mph d.43.3 mph Question 40 0.25 out of 0.25 points
An intern made an error and gave a patient a dose of 60 mg rather than 600 p g of a drug. Which of the following is true? Selected Answer: &, 5 The patient received an overdose by a factor of 100. Answers: @ a. The patient received an overdose by a factor of 100. b. The patient received an overdose by a factor of 1000. c. The patient received an underdose by a factor of 100. d. The patient received an underdose by a factor of 1000. Friday, May 13, 2022 7:14:42 AM EDT «— OK
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