Problem 1RQ Problem 2RQ: Why do experiments have to be done to support a hypothesis? Problem 3RQ: Why can't scientific methods always be used to solve social, political ethical, and economic... Problem 4RQ: How does technology differ from science? Problem 5RQ Problem 6RQ Problem 7RQ: What is a DQ? What does a large DQ mean? Why is it often difficult to estimate a DQ? Problem 8RQ: What derived units of (a) mass and (b) length are commonly used in the laboratory? Problem 9RQ: What is the Sl-derived unit for volume? What volume units are more often used in the laboratory? Problem 10RQ: Prefix Symbol Definition tera- T 1012 - M - centi- - - - - milli- - - - - 10-1 - K - nano- - - 10.... Problem 11RQ Problem 12RQ: Identify the following work as either applied research or basic research. a. An engineer determines... Problem 13P: Penicillin kills bacteria, thus saving the lives of thousands of people who otherwise might die of... Problem 14P Problem 15P Problem 16P: X-rays are widely used in medicine and dentistry. Do a risk-benefit analysis for (a) a dental... Problem 17P Problem 18P: The virus called HIV causes AIDS, a devastating and often deadly disease. Several drugs are... Problem 19P: Which are realistic masses for a cellular telephone and a laptop computer, respectively? 100mg, 100g... Problem 20P: In Europe, A2 sized paper measures 594 mm 420 mm, Is this larger or smaller than the standard 812... Problem 21P: Which one(s) of the following are likely to be paired incorrectly? Add or remove zeroes to the... Problem 22P: Sample X on the moon has exactly the same mass as Sample Y on Earth, Do the two samples weigh the... Problem 23P: Which of the following is a reasonable volume for a teacup? 25 mL 250 mL 2.5 L 25 L Problem 24P: Which of the following is a reasonable approximation for the area of a credit card? 4 cm2 40 cm2 400... Problem 25P: Earth's oceans contain 3.501 0 8 mi3 of water and cover an area of 1.401 0 8 mi2. What is the volume... Problem 26P: What is the area of Earth's oceans in square kilometers? See Problem 25. Problem 27P: Consider the two tubes shown below. The aluminum tube has an outside diameter of 0.998 in. and an... Problem 28P: Which one(s) of the following could be the inside diameter of the paper tube shown above (with... Problem 29P: Identify the following as physical or chemical properties. a. The glass on a tablet computer is... Problem 30P: Identify the following as physical or chemical properties. a. Milk chocolate melts in the mouth. b.... Problem 31P: Identify the following changes as physical or chemical. a. Bits of yellow plastic are melted and... Problem 32P: Identify the following changes as physical or chemical. a. Bacteria are killed by chlorine added to... Problem 33P: Identify each of the following as a substance or a mixture. a. helium gas used to fill a balloon b.... Problem 34P: Identify each of the following as a substance or a mixture. a. oxygen b. sodium sulfite c. smog d. a... Problem 35P: Which of the following mixtures are homogeneous, and which are heterogeneous? a. copper water pipe... Problem 36P: Which of the following mixtures are homogeneous, and which are heterogeneous? a. gasoline b. Italian... Problem 37P: Every sample of the sugar glucose (no matter where on Earth it comes from) consists of 8 parts (by... Problem 38P: An advertisement for shampoo says, "Pure shampoo, with nothing artificial added." Is this shampoo a... Problem 39P: Which of the following represent elements, and which represent compounds? a. Ir b. I c. InN d. IF7 Problem 40P Problem 41P Problem 42P: Without consulting tables, write a symbol for each of the following. a. oxygen b. phosphorus c.... Problem 43P: In his 1739 textbook, Traite elementaire de Chimie. Antoine Lavoisier (Chapter 2) listed 33 known... Problem 44P: In 1774 Joseph Priestley isolated a gas that he called "dephlogisticated air." Which of the... Problem 45P: Change the unit for each of the following measurements by replacing the power of ten with an... Problem 46P: Convert each of the following measurements to the SI base unit. a. 45mg b. 125ns c. 1O.7µL d.... Problem 47P: Carry out the following conversions. a. 5.52104 mL to L b. 325 mg to g c. 27 cm to m d. 27 mm to cm... Problem 48P: Carry out the following conversions. a. 546 mm to m b. 65 ns to s c. 37.6 mg to kg d. 46.3 dm3 to L... Problem 49P: Indicate which is the larger unit in each pair. a. mm or cm b. kg or g c. dL or L Problem 50P: There are about 7,000,000,000,000,000,000,000,000,000 (7 octillion) atoms in an adult human body.... Problem 51P: Express the length of a 31 -cm ruler in (a) mm, (b) meters, and (c) nm. Problem 52P: What is the volume in liters of (a) a 352-mL soft drink, (b) a 26 kL tank of gasoline? Problem 53P: (You may need data from Table 1.6 for some of these problems.) 53. A silver ingot has a volume of... Problem 54P: (You may need data from Table 1.6 for some of these problems.) 54. What is the density, in grams per... Problem 55P: (You may need data from Table 1.6 for some of these problems.) 55. A student measures 49.1 mL of... Problem 56P: (You may need data from Table 1.6 for some of these problems.) 56. The rubber in a pencil eraser has... Problem 57P: (You may need data from Table 1.6 for some of these problems.) 57. What is the volume of (a) 227 g... Problem 58P: (You may need data from Table 1.6 for some of these problems.) 58. What is the volume of (a) a 475-g... Problem 59P: (You may need data from Table 1.6 for some of these problems.) 59. A 40.mL quantity each of mercury... Problem 60P: (You may need data from Table 1.6 for some of these problems.) 60. A piece of red maple wood (d =... Problem 61P Problem 62P: (You may need data from Table 1.6 for some of these problems.) 62. ESS fuel is a mixture of 35%... Problem 63P: (You may need data from Table 1.6 for some of these problems.) 63. A "crystal ball" is 148 mm in... Problem 64P: (You may need data from Table 1.6 for some of these problems.) 64. The base of a paper carton of... Problem 65P: Liquid nitrogen, used for freezing sperm samples, has a temperature of 77 K. What is this... Problem 66P: Normal body temperature is about 37 °C. What is this temperature in kelvins? Problem 67P Problem 68P Problem 69AP: A certain chemistry class is 1.00 microcentury ( cen) long. What is its length in minutes? Problem 70AP: 70. A unit of beauty, a helen, thought to have been invented by British mathematician W.A.H.... Problem 71AP: 71. English chemist William Henry studied the amounts of gases absorbed by water at different... Problem 72AP Problem 73AP Problem 74AP: For Problems 74 and 75t, classify each of the numbered statements as (a) an experiment, (b) a... Problem 75AP: For Problems 74 and 75, classify each of the numbered statements as (a) an experiment, (b) a... Problem 76AP Problem 77AP Problem 78AP Problem 79AP Problem 80AP Problem 81AP Problem 82AP Problem 83AP Problem 84AP Problem 85AP Problem 86AP Problem 87AP: The density of a planet can be approximated from its radius and estimated mass. Calculate the... Problem 88AP: The extrasolar planet HAT-P-i orbits a star 450 light-years from Earth. The planet has about half... Problem 89AP Problem 90AP Problem 91AP Problem 92AP Problem 1.1CTE Problem 1.2CTE Problem 1.3CTE Problem 1.4CTE Problem 1.5CTE Problem 1.6CTE Problem 1CGP Problem 2CGP Problem 3CGP Problem 1CHQ: Materials Needed: • 1/4 cup dark corn syrup • 1/4 cup dishwashing liquid • 1/4 cup water • 1/4 cup... Problem 2CHQ: Materials Needed: • 1/4 cup dark corn syrup • 1/4 cup dishwashing liquid • 1/4 cup water • 1/4 cup... Problem 3CHQ Problem 4CHQ Problem 5CHQ: Materials Needed: • 1/4 cup dark corn syrup • 1/4 cup dishwashing liquid • 1/4 cup water • 1/4 cup... format_list_bulleted