INTRODUCTORY CHEMISTRY-W/SEL.SOLN.MAN.
6th Edition
ISBN: 9780134845609
Author: Tro
Publisher: PEARSON
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Chapter 3, Problem 12E
What is an element? A compound?
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Chapter 3 Solutions
INTRODUCTORY CHEMISTRY-W/SEL.SOLN.MAN.
Ch. 3 - Which substance is a pure compound? a. Gold b....Ch. 3 - Which property of trinitrotoluene (TNT) is most...Ch. 3 - Which change is a chemical change? a. The...Ch. 3 - Q4. Which process is endothermic?
a. The burning...Ch. 3 - Q5. A 35-g sample of potassium completely reacts...Ch. 3 - Prob. 6SAQCh. 3 - Convert the boiling point of water (100.00C) to K....Ch. 3 - Q8. A European doctor reports that you have fever...Ch. 3 - Q9. How much heat must be absorbed by 125 g of...Ch. 3 - Q10. Substance A has a heat capacity that is much...
Ch. 3 - Define matter and list some examples.Ch. 3 - Prob. 2ECh. 3 - What are the three states of matter?Ch. 3 - Prob. 4ECh. 3 - Prob. 5ECh. 3 - Prob. 6ECh. 3 - Prob. 7ECh. 3 - Prob. 8ECh. 3 - 9. What is a mixture?
Ch. 3 - 10. What is the difference between a homogeneous...Ch. 3 - What is a pure substance?Ch. 3 - What is an element? A compound?Ch. 3 - What is the difference between a mixture and a...Ch. 3 - Prob. 14ECh. 3 - 15. What is the difference between a physical...Ch. 3 - Prob. 16ECh. 3 - Prob. 17ECh. 3 - Prob. 18ECh. 3 - Prob. 19ECh. 3 - What is chemical energy? List some examples of...Ch. 3 - Prob. 21ECh. 3 - 22. What is an exothermic reaction? Which has...Ch. 3 - 23. What is an endothermic reaction? Which has...Ch. 3 - Prob. 24ECh. 3 - Prob. 25ECh. 3 - 26. How do the three temperature scales differ?
Ch. 3 - Prob. 27ECh. 3 - Prob. 28ECh. 3 - The following equation can be used to convert...Ch. 3 - Prob. 30ECh. 3 - Classify each pure substance as an element or a...Ch. 3 - 32. Classify each pure substance as an element or...Ch. 3 - 33. Classify each mixture as homogeneous or...Ch. 3 - 34. Classify each mixture as homogeneous or...Ch. 3 - 35. Classify each substance as a pure substance or...Ch. 3 - 36. Classify each substance as a pure substance or...Ch. 3 - Classify each property as physical or chemical. a....Ch. 3 - Classify each property as physical or chemical. a....Ch. 3 - Which of the following properties of ethylene(a...Ch. 3 - Which of the following properties of ozone (a...Ch. 3 - 41. Classify each change as physical or...Ch. 3 - 42. Classify each change as physical or...Ch. 3 - A block of aluminum is (a) ground into aluminum...Ch. 3 - 44. Several pieces of graphite from a mechanical...Ch. 3 - 45. An automobile gasoline tank holds 42 kg of...Ch. 3 - In the explosion of a hydrogen-filled balloon,...Ch. 3 - 47. Are these data sets on chemical changes...Ch. 3 - 48. Are these data sets on chemical changes...Ch. 3 - Prob. 49ECh. 3 - 50. A 56-g sample of iron reacts with 24 g of...Ch. 3 - Prob. 51ECh. 3 - Prob. 52ECh. 3 - Prob. 53ECh. 3 - Prob. 54ECh. 3 - Prob. 55ECh. 3 - Prob. 56ECh. 3 - Prob. 57ECh. 3 - Prob. 58ECh. 3 - Prob. 59ECh. 3 - Prob. 60ECh. 3 - 61 A common type of handwarmer contains Iron...Ch. 3 - 62. In a chemical cold pack, two substances are...Ch. 3 - 63. Classify each process as exothermic or...Ch. 3 - Classify each process as exothermic or...Ch. 3 - Perform each temperature conversion. a.212 F to...Ch. 3 - Prob. 66ECh. 3 - The coldest temperature ever measured in the...Ch. 3 - 68. The warmest temperature ever measured in the...Ch. 3 - 69. Vodka does not freeze in the freezer because...Ch. 3 - Liquid helium boils at 4.2 K. Convert this...Ch. 3 - 71. The temperature in the South Pole during the...Ch. 3 - Prob. 72ECh. 3 - Prob. 73ECh. 3 - Prob. 74ECh. 3 - 75. Calculate the amount of heat required to raise...Ch. 3 - 76. Calculate the amount of heat required to raise...Ch. 3 - Calculate the amount of heat required to heat a...Ch. 3 - 78. Calculate the amount of heat required to heat...Ch. 3 - If 89 J of heat are added to a pure gold coin with...Ch. 3 - If 57 J heat are added to an aluminum can with a...Ch. 3 - An iron nail with a mass of 12 g absorbs 15 J of...Ch. 3 - Prob. 82ECh. 3 - Prob. 83ECh. 3 - 84. A lead fishing weight with a mass of 57 g...Ch. 3 - An unknown metal with a mass of 28 g absorbs 58 J...Ch. 3 - When 2.8 J of heat are added to 5.6 g of an...Ch. 3 - When 56 J of heat are added to 11 g of a liquid,...Ch. 3 - Prob. 88ECh. 3 - Prob. 89ECh. 3 - Prob. 90ECh. 3 - How much energy (In J) lost when a sample of iron...Ch. 3 - Prob. 92ECh. 3 - Prob. 93ECh. 3 - Prob. 94ECh. 3 - A pure gold ring with a volume of 1.57 cm3 is...Ch. 3 - Prob. 96ECh. 3 - Prob. 97ECh. 3 - Prob. 98ECh. 3 - 99. What is the temperature change (ΔT) in Celsius...Ch. 3 - Prob. 100ECh. 3 - Prob. 101ECh. 3 - Prob. 102ECh. 3 - A backpacker wants to carry enough fuel to heat...Ch. 3 - 104. A cook wants to heat 1.35 kg of water from...Ch. 3 - Evaporating sweat cools the body because...Ch. 3 - Prob. 106ECh. 3 - A 15.7-g aluminum block is warmed to 53.2C and...Ch. 3 - A 25.0-mL sample of ethanol (density = 0.789g/mL)...Ch. 3 - The wattage of an appliance indicates its average...Ch. 3 - Prob. 110ECh. 3 - What temperature is the same whether it is...Ch. 3 - What temperature on the Celsius scale is equal to...Ch. 3 - 113. Classify each as pure substance or a...Ch. 3 - Classify each as a pure substance or a mixture. If...Ch. 3 - This molecular drawing shows images of acetone...Ch. 3 - This molecular drawing shows of methane molecules...Ch. 3 - Prob. 117ECh. 3 - Global warming refers to the rise in average...Ch. 3 - 119. Examine the data for the maximum and minimum...Ch. 3 - Using white and black circles to represent...Ch. 3 - Prob. 121QGWCh. 3 - 122. A friend asks you to invest in a new...Ch. 3 - Prob. 123QGW
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- Which of the following are elements, and which are compounds? a NaOH; b BaCl2; c He; d Ag; e Fe2O3.arrow_forwardWhat is the chief factor that determines thephysical slateof a sample of matter?arrow_forwardHow do you distinguish (a) chemical properties from physical properties? (b) distillation from filtration? (c) a solute from a solution?arrow_forward
- Which of the following are compounds, and which are elements? aNa2S bBr2 cPotassium hydroxide dFluorine eCompound or element fCompound or elementarrow_forwardSuppose someone emptied ball bearings into a container of salt. Could you separate the ball bearings from the salt? How? Would your method involve no change, be a physical change, or be a chemical change?arrow_forwardWhich of the following represent physical properties or changes, and which represent chemical properties or changes? You curl your hair with a curling iron. You curl your hair by getting a “permanent wave” at the hair salon. Ice on your sidewalk melts when you put salt on it. A glass of water evaporates overnight when it is left on the bedside table. Your steak chars if the skillet is too hot. Alcohol feels cool when it is spilled on the skin. Alcohol ignites when a flame is brought near it. Baking powder causes biscuits to rise.arrow_forward
- Iced Tea Use iced tea with and without ice cubes as examples to explain homogeneous and heterogeneous mixtures. If you allow all of the ice cubes to melt, what type of mixture remains?arrow_forwardConsider two boxes with the following contents: the first box contains 10 blue paper clips and 10 red paper clips; the second contains the same number of each color of paper clip with the difference that each blue paper clip is interlocked with a red paper clip. Which box has contents that would be an analogy for a mixture, and which box has contents that would be an analogy for a compound?arrow_forwardWhat properties distinguish solids from liquids? Liquids from gases? Solids from gases?arrow_forward
- Decide whether each of the following is a physical property or a chemical property of the substance. a Salt substitute, potassium chloride, dissolves in water. b Seashells, calcium carbonate, fizz when immersed in vinegar. c The gas hydrogen sulfide smells like rotten eggs. d Fine steel wool (Fe) can be burned in air. e Pure water freezes at 0C.arrow_forwardSeawater is composed of salt, sand, and water. Is seawatera heterogeneous or homogeneous mixture? Explain.arrow_forwardHow does an element differ from a compound? How are they similar?arrow_forward
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