Lesson 1 Quiz Part 1 of 4 - 8.0/ 8.0 Points Question 1 of 12 4.0/ 4.0 Points Who discovered the atomic theory? A. Antoine Lavoisier B. John Dalton C. John
... [Show More] Dalton and Antoine La voisier D. Albert Einstein E. none of the above Answer Key: B Feedback: Good! It was Dalton. Question 2 of 12 4.0/ 4.0 Points Who discovered the law of conservation of mass? A. Albert Einstein B. John Dalton and Antoine Lavoisier C. Antoine Lavoisier D. John Dalton E. none of the above Answer Key: C Feedback: Good. It was Lavoisier. Part 2 of 4 - 4.0/ 12.0 Points Question 3 of 12 4.0/ 4.0 Points A lead ball has a mass of 49.0 grams and a density of 11.3 g/cm3. What is the volume of the ball? A.0.0340 cm^3 B.554 cm^3 C.0.231 cm^3 D.4.34 cm^3 E.none of the above Answer Key: D Feedback: Good! This is simply an application of d = m/v. Question 4 of 12 0.0/ 4.0 Points What is the volume in mL of a cube of water with dimensions 11.0 cm × 11.0 cm × 11.0 cm ? A.1.33 × 103 B.1.3 × 103 C.1.33 × 10-3 D.1.331 × 10-3 E.none of the above Answer Key: A Feedback: This is discussed in section 2.8 in the text. Question 5 of 12 0.0/ 4.0 Points When the value 98.54 is rounded to two significant figures, the number should be reported as: A.98 B.98.5 C.99 D.100 E.none of the above Answer Key: C Feedback: Rounding associated with sig figs is discussed in section 2.4 of the text. Part 3 of 4 - 4.0/ 20.0 Points Question 6 of 12 4.0/ 4.0 Points `Given the sequence of temps below, which one represents the Fahrenheit boiling, room temp, and freezing points of water, in that order? A.0-75-100 B.212-75-32 C.0-25-100 D.0-298-373 E.none of the above Answer Key: B Question 7 of 12 0.0/ 4.0 Points `How should someone classify grape juice? A.mixture-homogeneous B.pure substance-compound C.mixture-heterogeneous D.pure substance-element E.none of the above Answer Key: A Question 8 of 12 0.0/ 4.0 Points `Gallium metal will melt in your hand. Which of the following is a true statement about this process? It represents a . A. physical change B. chemical property C. chemical change D.distillation E.none of the above Answer Key: A Question 9 of 12 0.0/ 4.0 Points `A solid that does not have a long range repeating order is called . A.fixed B.rigid C.amorphous D.crystalline E.none of the above Answer Key: C Question 10 of 12 0.0/ 4.0 Points `Please select the TRUE statement below. A.Mixtures may be composed of just one type of element. B.A pure substance may consist of two or more different compounds. C.A mixture cannot be homogeneous. D.Matter may be a pure substance or it may be a mixture. E.All of the above statements are true. Answer Key: D Part 4 of 4 - 0.0/ 10.0 Points Question 11 of 12 0.0/ 5.0 Points `IN YOUR OWN WORDS, who was John Dalton, and why is he so important to chemistry? What did he "discover" that is so central to our study of chemistry? Explain why it is important. I believe that John Dalton discovered Law of Partial Pressures, Law of Stoichiometry, and Atomic Theory, but he did not invent anything that I know of. Feedback: See section 1.4 Question 12 of 12 0.0/ 5.0 Points `Human remains are typically cremated at a temperature of about 870.0 degrees C. (1) What is this temperature in F? (2) What is this temperature in K? All work must be shown, labeled, and explained in detail to receive credit. Note that where applicable, superscripts (X2) can be written as X^2 and subscripts (X2) can be written as X_2 if it saves you time. Feedback: See section 3.10 Lesson 2 Quiz Return to Assessment List Part 1 of 3 - 12.0/ 20.0 Points Question 1 of 12 0.0/ 4.0 Points `If a nickel atom formed an ion, what charge would it have? A.1+ B.1- C.2- D.2+ E.it cannot be determined based on the information given Answer Key: E Feedback: See section 4.7. Transition metals can have various charges, though they will all be positive. Question 2 of 12 4.0/ 4.0 Points `The elements located in groups 3B through 2B are known as A.halogens B.transition metals C.alkaline earth metals D.noble gases E.none of the above Answer Key: B Feedback: See section 4.6 Question 3 of 12 4.0/ 4.0 Points `Which of these can be found in the nucleus? A. protons and electrons. B. only protons C.electrons and neutrons D.protons, neutrons, and electrons. E.protons and neutrons. Answer Key: E Feedback: See section 4.3 Question 4 of 12 4.0/ 4.0 Points `If iodine were to form an ion, what would its charge be? A.2- B.1+ C.1- D.2+ E.none of the above Answer Key: C Feedback: See the periodic table and section 4.7 Question 5 of 12 0.0/ 4.0 Points `Of the scientists listed below, which one did not contribute to developing the model of the atom? A.Rutherford B.Thomson C.Democritus D.Mendeleev E.Dalton Answer Key: D Feedback: See sections 4.2 through 4.5 Part 2 of 3 - 12.0/ 20.0 Points Question 6 of 12 4.0/ 4.0 Points `What would be the proper way to write the ion formula for acetate? A.C3H2O - B.C2H3O - C.C2H3O- D.C2H3O 2- E.none of the above Answer Key: B Feedback: use naming rules and polyatomic ion list Question 7 of 12 0.0/ 4.0 Points `When naming Na3PO4 , it cannot be trisodium phosphate. Why? A. this compound should be called trisodium monophosphate. B. you cannot use a prefix for the first element of an ionic compound. C. you cannot use a prefix for the first element in a molecular compound. D. the sodium has a negative 3 charge. E. none of the above Answer Key: B Feedback: use naming mechanism Question 8 of 12 4.0/ 4.0 Points `We discussed diatomic molecules in this lesson. Which of these would NOT be classified in that category? A.nitrogen B.fluorine C.hydrogen D.neon E.all of these are diatomic Answer Key: D Feedback: see section 5.4 Question 9 of 12 4.0/ 4.0 Points `What would be the proper way to write the polyatomic ion formula for perchlorate? A.ClO- B.ClO4- C. ClO - D. ClO - E. none of the above Answer Key: B Feedback: use naming rules and polyatomic ion list Question 10 of 12 0.0/ 4.0 Points `How many oxygen atoms are in the formula Al2(CO3)3? A.1 B.6 C.3 D.9 E.none of the above Answer Key: D Feedback: use formula to count Part 3 of 3 - 0.0/ 10.0 Points Question 11 of 12 0.0/ 5.0 Points `Chemistry really is another language sometimes. It abbreviates a lot, and chemical formulas are a way to write a little and still convey a lot of information. For example, consider the chemicals hydrogen, cadmium (III) acetate, Lead (II) Iodide, and tetranitrogen nonasulfide. Translate these names into chemical formulas using the appropriate procedure described in the course text and my lecture material. Answer the following: (1) What is the correct formula of each of these compounds? (2) Explain how exactly (i.e. the procedure used) you arrived at your answer...in other words, walk me through your thinking. You will not receive credit if you don't show your work in detail. Feedback: chapter 5 discusses naming Comment: :o( Question 12 of 12 0.0/ 5.0 Points `Describe, in detail, the "anatomy" of an atom. Include a discussion of all subatomic particles, any associated charges, their locations, how they interact with one another, and explain which of these particles actually identify the atom on the periodic table. Also include a discussion on which of these may change in number in the case of isotopes. Model Short Answer: this comes from chapter 4 Feedback: this comes from chapter 4 Comment: No answer Diane? Lesson 3 Quiz Return to Assessment List Part 1 of 4 - 0.0/ 8.0 Points Question 1 of 12 0.0/ 4.0 Points `I recently went to the dentist for a procedure that required me to have laughing gas (nitrous oxide, or N2O). I specified that I wanted EXACTLY 1.000 x 1025 molecules of this gas delivered to me. If he was going to be my dentist, he had to prove to me he knew a little chemistry. How many grams would he have to deliver? A.1.100 × 103 B.44.01 C.730.9 D.16.61 Answer Key: C Feedback: See section 6.3 Question 2 of 12 0.0/ 4.0 Points `When answering the question of what I would do for a Klondike bar, I said I would jump into the Nile river with a crocodile while wearing 5.50 x 1025 atoms of lead on my body. What would be the mass of this lead in kg? A.1.89 B.18.9 C.1.14 x 1025 D.1.60 x 1045 E.6.022 x 1023 Answer Key: B Part 2 of 4 - 0.0/ 16.0 Points Question 3 of 12 0.0/ 4.0 Points `In the image below, which reaction type is represented in equation 2? A.single displacement B.double-displacement C.decomposition D.synthesis/combination E.none of the above Answer Key: C Feedback: See section 7.10 Question 4 of 12 0.0/ 4.0 Points `If I ask you to write an equation representing a chemica reaction, you must first know A. the molar mass of all the reactants and products. B. the amount of moles of all compounds involved C. the atomic mass of each atom involved. D. the symbols and formulas of all reactants and products. E. none of the above. Answer Key: D Question 5 of 12 0.0/ 4.0 Points `Oxidation-reduction reactions are also known as redox reactions. We learned about their unique characteristics in this lesson. Which of the following would be a FALSE statement given what we learned about redox reactions? A. if an atom gains 1 or more electrons, it is "reduced" B. when a redox reaction occurs, either reduction happens or oxidation happens, but never both in the same reaction C. Redox reactions often involve elemental oxygen D. If an atom loses 1 or more electrons, it is "oxidized" E. All of the above statement are true. Answer Key: B Feedback: See section 7.9 Question 6 of 12 0.0/ 4.0 Points `There are many signs we can observe to tell us if a chemical reaction has taken place. Which of these would NOT be one of those signs? A.absorption of light B.absorption of heat C. release of heat D. release of light Answer Key: A Feedback: See section 7.2 Part 3 of 4 - 4.0/ 16.0 Points Question 7 of 12 0.0/ 4.0 Points `You have to be careful about pouring drano down your pipes since it is mainly hydrochloric acid--you can't do it if they are made of aluminum because it will dissolve them! You can't acid clean your aluminum auto parts for the same reasons: 2 Al + 6 HCl → 2 AlCl3 + 3H2. If you were able to dissolve 10.0 mol of Al, how many many moles of hydrogen gas could you make? NOTE: All numbers located immediately after elemental symbols should be considered subscripts. A.3.00 moles B.6.00 moles C.1.50 moles D.15.0 moles E.none of the above Answer Key: D Feedback: See section 8.6 Question 8 of 12 4.0/ 4.0 Points `Suppose you were tasked with producing some nitrogen monoxide (a.k.a. nitric oxide). I'm sure this is often requested of you. You can do it by combusting ammonia (be careful!). The equation would be as follows: 4NH3 + 5O 2→ 4NO + 6H2O. If you form 3.50 mol of water, how much NO forms? A.2.33 mol. B.4.00 mol. C.4.50 mol. D.6.75 mol. E. none of the above Answer Key: A Feedback: Good. See section 8.6 Question 9 of 12 0.0/ 4.0 Points `Sodium and chlorine are very dangerous by themselves. However, when we combine them together in a chemical reaction, we eat it--it's table salt: 2Na + Cl2 → 2NaCl. If I want to make 100.0 g of my own salt (because I can and that's how I roll), how much elemental chlorine would I need? NOTE: All numbers located immediately after elemental symbols should be considered subscripts. A.100.0 g B.50.0 g C.25.0 g D.60.67 g E.not enough information Answer Key: D Feedback: See section 8.6 Question 10 of 12 0.0/ 4.0 Points `Sodium and chlorine are very dangerous by themselves. However, when we combine them together in a chemical reaction, we eat it--it's table salt: 2Na + Cl2 → 2NaCl. If I want to make 50.0 g of my own salt (because I can and that's how I roll), how much elemental sodium would I need? NOTE: All numbers located immediately after elemental symbols should be considered subscripts. A.50.0 g B.100.0 g C.22.99 g D.19.67 g E.not enough information Answer Key: D Feedback: See section 8.6 Part 4 of 4 - 0.0/ 10.0 Points Question 11 of 12 0.0/ 5.0 Points `Alkali metals are extremely reactive with water. Suppose I give you a 55.50 g chunk of cesium and you throw it into a lake. When it reacts with water to form cesium hydroxide and hydrogen gas, how much hydrogen in grams is theoretically produced? Write a balanced equation for the reaction and show all work clearly and in detail to receive credit. All numbers seen immediately following the elemental symbols are intended to be subscripts. Feedback: Use your limiting reactant to predict product formation. Comment: No solution...:o( Question 12 of 12 0.0/ 5.0 Points `Consider the solubility rules and identify all of the spectator ions when the following chemicals react: A) lead (II) nitrate and ammonium chloride B) Barium bromide and potassium carbonate. You must show all work (equations) clearly and in detail to receive credit. Feedback: This concerns net ionic reactions and the formations of precipitates. Comment: No solution Diane..? Lesson 4 Quiz Return to Assessment List Part 1 of 3 - 8.0/ 20.0 Points Question 1 of 12 0.0/ 4.0 Points `Having learned about electromagnetic radiation in this lesson, which of these statements about it is true? A. when wavelength increases, energy decreases B. when wavelength increases, frequency increases C. Red light wavelength is shorter than green light. D. when energy increases, frequency decreases E. none of the above Answer Key: A Feedback: See section 9.3 Question 2 of 12 4.0/ 4.0 Points `In terms of wavelength, which of these is the longest? A. Infrared Radiation B. Radio Waves C. Gamma Rays D.Microwaves E.X-rays Answer Key: B Feedback: Good. See section 9.3 Question 3 of 12 0.0/ 4.0 Points `Which of the following statements is true about atomic size? A.increases down a group and from right to left across a period. B.increases up a group and diagonally across the Periodic Table. C.increases down a group and from left to right across a period. D.increases up a group and from right to left across a period. E.increases up a group and from left to right across a period. Answer Key: A Question 4 of 12 0.0/ 4.0 Points `Write out the electron configurations of the ions below and determine which one is listed with an incorrect charge. (the numbers and charges written after the elemental symbol should be understood as superscripts) A.I- B.O2+ C.Al3+ D.Mg2+ E.none of the above Answer Key: B Feedback: See section 9.7 Question 5 of 12 4.0/ 4.0 Points `If I time the movement of waves for 1 second, and calculate that 100 waves passed through in that 1 second, what have I calculated? A.crest B.amplitude C.wavelength. D.frequency. E.none of the above Answer Key: D Feedback: Good. See section 9.3 Part 2 of 3 - 4.0/ 20.0 Points Question 6 of 12 0.0/ 4.0 Points `Geometrically linear means that the electron groups have what angle? A.90° B.120° C.109.5° D.180° E.not enough information Answer Key: D Feedback: See section 10.7 Question 7 of 12 0.0/ 4.0 Points `Geometrically trigonal planar means that the electron groups have what angle? A.120° B.90° C.180° D.109.5° E.not enough information Answer Key: A Feedback: See section 10.7 Question 8 of 12 0.0/ 4.0 Points `Some atoms are better at attracting electrons compared to others. Which term below best describes that? A. polar covalent B. nonpolar covalent C.electronegativity D.dipole moment E.coulombic attraction Answer Key: C Feedback: See section 10.8 Question 9 of 12 4.0/ 4.0 Points `According to the electronegativity table, the value for barium and sulfur is 0.9 and 3.5, respectively. What type of bond would you expect to form between these two elements? A.Polar covalent B.Ionic C. Pure covalent D. not enough information E. none of the above Answer Key: B Feedback: Good. See section 10.8 Question 10 of 12 0.0/ 4.0 Points `Regarding boron trifluoride, which of these is TRUE? A.the central atom does not obey the octet rule B. it is not polar C. it's molecular geometry is trigonal planar D. all of these are true E. None of these are true. Answer Key: D Feedback: See section 10.7 Part 3 of 3 - 0.0/ 10.0 Points Question 11 of 12 0.0/ 5.0 Points `On December 5, 1971, at the mere age of 35, the great composer Wolfgang Amadeus Mozart died after a three month long battle with illness. Rumor was that a rival musician had poisoned him, but it turned out that common consensus was that the antimony prescription that doctors had prescribed him was actually poisoning him. (a) What is the full and abbreviated electron configuration for this element? Explain how you arrived at this configuration. In other words, don't just give me the configuration, but walk me through and explain to me how exactly you arrived at your answer. (b) In this Lesson we talked about the relationship between frequency and wavelength. The relationship can actually be expressed as where f is the frequency, c is the speed of light (see below), and lambda (the symbol on the left of the equals sign that looks like an upside down y) is wavelength. The particle nature of light was first proposed by Einstein, who suggested that light could be described as a stream of particles called photons. A photon of a certain wavelength (lambda) has an energy (E) given by the equation: where E is the energy of the photon in J, h is Planck's constant (6.626 x 10-34 J*s), and c is the speed of light (3.00 x 108 m/s). If we determine the wavelength (lambda) of light emitted from a sample of antimony to be 206.8 nm, what is the energy (E) and frequency (f) that corresponds to this wavelength? You must show all work to receive credit. HINT: 1 nm = 1 x 10-9 m; be sure all units are able to cancel out as necessary HINT: Plug in the values you know. You can substitute values between these equations. Feedback: This is from chapter 9. Question 12 of 12 0.0/ 5.0 Points `Think about it--why is the line spectrum produced by excited barium atoms more complex than the line spectrum produced by excited sodium atoms? Be sure to base your answer on what we discussed in THIS class and use the terminology from the materials in THIS course. Your answer must be sufficiently detailed to receive credit. Feedback: Emission spectra are discussed in Chapter 9. Lesson 5 Quiz Return to Assessment List Part 1 of 3 - 12.0/ 20.0 Points Question 1 of 12 4.0/ 4.0 Points `Given the conversion factors and definitions discussed in the lesson, which of the following is equivalent to 2 atm? A. 1,520 torr. B. 1,520 mm Hg. C.29.4 psi. D.202,650 Pa. E.all of these choices Answer Key: E Feedback: Good. Gas law conversions are discussed in section 11.3 Question 2 of 12 4.0/ 4.0 Points `Which sentence below is NOT true about pressure? A. After creating a pressure difference, the atmospheric pressure can push liquid up a straw. B. The atmosphere has a pressure as the components of air collide with surfaces. C.A deep well dug in the ground must have the pump located at the bottom of well in order to have the water come to the surface. D.Pressure is caused by gas molecules colliding with surfaces. E.All of the above statements are true. Answer Key: E Feedback: Good. pressure is discussed in 11.3 Question 3 of 12 0.0/ 4.0 Points `You've got gas! A sample of it that, is. More specifically, a 350.0 mL sample in an flexible container that has a temperature of 293.15 K. Suppose you throw it on the stove and heat it to 373.15 K. What will the new volume be (in L)? A.2.75 L B.17.5 L C.0.224 L D.0.446 L Answer Key: D Feedback: This is Charles' Law, section 11.5 Question 4 of 12 0.0/ 4.0 Points `I have a cylinder sitting in my lab that contains 1.55 L of gas, and it's temperature is 305.15 K. If I compress the cylinder and change the volume to 0.755 L, what will be the new temperature in Celsius? A.149°C B.-124°C C.353°C D.273°C Answer Key: B Feedback: Charles' law is discussed in 11.5 Question 5 of 12 4.0/ 4.0 Points `I have a pressure cooker in my underground lair that is brewing a diabolical solution. I set everything up and went upstairs, but forgot to write down the initial temperature. When I came downstairs later to check on it, I see that the pressure gauge shows that the pressure has decreased by 10 times, while the volume increased by 5 times. The temperature now reads -123.15 °C. What was the starting temperature when I left (in °C)? A.-198 B.75 C.27 D.300 Answer Key: C Feedback: Good. Combined gas law is discussed in 11.6 Part 2 of 3 - 4.0/ 20.0 Points Question 6 of 12 0.0/ 4.0 Points `A liquid generally wants to decrease the area of its surface as much as possible. The natural tendency to do this is known as what? A.viscosity. B.vaporization. C.capillary action. D.surface tension. E.none of the above Answer Key: D Feedback: This action is discussed in 12.3 Question 7 of 12 0.0/ 4.0 Points `When you put water into an ice cube tray and stick it in the freezer to make ice, which of these is true? A. it is an exothermic process. B. the process is referred to scientifically as sublimation. C. it is an endothermic process. D. the heat of vaporization must be removed. E. none of the above Answer Key: A Feedback: Freezing is discussed in 12.5 Question 8 of 12 0.0/ 4.0 Points `Most people don't realize that once something starts to melt, cranking up the heat does't make the temperature of the substance higher, at least not until it is ALL melted. When you add lots of extra heat to a solid that is in the process of melting, what ends up happening to all of this extra energy you are adding? It is used to do what? A. expand the solid. B. change solid to liquid. C. change the liquid back to solid. D. overcome the intermolecular forces that hold the solid together. E. raise the temperature of the solid above its melting point. Answer Key: B Feedback: Melting is discussed in 12.5 Question 9 of 12 0.0/ 4.0 Points `We discussed intermolecular forces in this lesson. What would be the result if we increased these forces within a liquid? It would... A. decrease the vapor pressure B. decrease the evaporation rate C. increase the surface tension D. increase the viscosity E. all of the above Answer Key: E Feedback: This can be answered from the info in 12.1 and 12.2 Question 10 of 12 4.0/ 4.0 Points `As we learned, matter exists in different states--solid, liquid and gas. Which one of these could be described as having low density and easily compressible? A.gases B.solids C.liquids D.both solids and liquids E.none of the above Answer Key: A Feedback: Good. This is discussed in 12.2 Part 3 of 3 - 0.0/ 10.0 Points Question 11 of 12 0.0/ 5.0 Points `Oxygen is a nonpolar gas, but it will dissolve a little bit in water (which is a polar solvent. Which intermolecular force(s) is/are responsible for the interaction between the two compounds? Explain in detail to receive credit. Feedback: Intermolecular forces are discussed in Ch. 12 Question 12 of 12 0.0/ 5.0 Points `What is the temperature of a 926 L compressed gas tank that contains 64.1 mol of carbon monoxide at a pressure of 38.1 atm? You must show all work to receive credit. Feedback: Gas laws are covered in Ch. 11 Comment: No solution Diane?...please check into how to solve these, then ask for help...I am here ...:o) Lesson 6 Quiz Part 1 of 3 - 12.0/ 20.0 Points Question 1 of 12 4.0/ 4.0 Points 'Which of these statements is true regarding a gas's ability to dissolve in water? It... A.is independent of temperature. B.decreases with increasing temperature. C.increases with increasing temperature. D.gases are not soluble in water. E.none of the above Answer Key: B Feedback: Good. Gas solutions are discussed in 13.4 Question 2 of 12 4.0/ 4.0 Points 'Suppose you have a 0.10 M solution of AlBr3. What is the concentration of each ion? A.0.10 M Al3+ ions and 0.30 M Br- ions B.0.30 M Al3+ ions and 0.10 M Br- ions C.0.10 M Al3+ ions and 0.033 M Br- ions D.0.033 M Al3+ ions and 0.033 M Br- ions Answer Key: A Feedback: Good. See 13.6 Question 3 of 12 0.0/ 4.0 Points `Suppose you want to prepare a 2.50 M solution of sodium chloride. If you only have 0.325 moles of sodium chloride, and you must use it all, how many mL must you prepare? A.0.130 mL B.0.813 mL C.130. mL D.7.69 mL Answer Key: C Feedback: Solution concentration is in 13.6 Question 4 of 12 4.0/ 4.0 Points 'Water can dissolve many compounds What happens when an ionic substance dissolves in it? A. the positive end of water dipoles attract the negative ions. B. the solvent-solute attractive forces overcome the solute-solute attractions. C. the negative end of water dipoles attract the positive ions. D. each of the above (A, B, and C) occurs. E. none of the above (A, B, or C) occurs. Answer Key: D Feedback: Good. This is discussed in 13.3 Question 5 of 12 0.0/ 4.0 Points 'We discussed how some solutions are electrolytes in this lesson. Which of these would be a strong one? A.HCl B.NH4Cl C.NaC2H3O2 D.NaCl E.all of the above Answer Key: E Feedback: Electrolytes are in 13.3 Part 2 of 3 - 8.0/ 20.0 Points Question 6 of 12 0.0/ 4.0 Points `Suppose you have a sample of HC2H3O2 with a concentration of 2.0 M. So, what would be the [H+]? A.2.0 M B.>2.0 M C.< 2.0 M D.1.0 M Answer Key: C Feedback: Weak acids discussed in 14.7 Question 7 of 12 4.0/ 4.0 Points `We discussed many properties and characteristics of acids in this lesson. Which of the following is NOT one that was mentioned? A. Acids have a slippery feel. B. Acids have a sour taste. C. Acids dissolve many metals. D. Acids turn litmus paper red. E. All of the above are properties of acids. Answer Key: A Feedback: Good. Acid properties are discussed in 14.2 Question 8 of 12 4.0/ 4.0 Points `In this lesson we learned about Kw, which is known as the the ion product constant for water. What is this value? A.0.0 B.1.0 x 1014 C.1.0 x 10-7 D.1.0 x 10-14 E.1.0 x 107 Answer Key: D Feedback: Good. Water is discussed in 14.8 Question 9 of 12 0.0/ 4.0 Points `Bases have many useful properties that can be exploited for our own benefit. They are commonly used to make many things that we use. For example, which of these is associated with making fertilizer? A.NaHCO3 B.NH3 C.KOH D.NaOH E.all of the above Answer Key: B Feedback: Base properties and examples are discussed in 14.3 Question 10 of 12 0.0/ 4.0 Points `If a solution is acidic, which of the following is true? A.[H3O+] > [OH-] B.[H3O+] = [OH-] C.pH = pOH D.[H3O+] < [OH-] E.none of the above Answer Key: A Feedback: This is discussed in 14.7 Part 3 of 3 - 0.0/ 10.0 Points Question 11 of 12 0.0/ 5.0 Points PART 1: How many milliliters of concentrated HCl (12.1 M) are needed to make the following amounts of acid? You must show all work in detail to receive credit. (a) 5.00 L of 0.100 M, (b) 1.00 L of 6.00 M, (c) 2.00 L of 3.00 M, (d) 100 mL of 0.100 M. PART 2: Explain, in detail, how you would go about making the solution in letter (a) above. Include all detail and terminology as discussed in the Lesson materials. Feedback: Solutions are discussed in Ch. 13 Question 12 of 12 0.0/ 5.0 Points **(PART 1) Calculate the boiling points of these solutions: 0.1 m Na2P 0.2 m NaBr 0.16 m C12H22O11 POTENTIALLY USEFUL INFORMATION: Kb for water = 0.512 C*kg solvent/mol solute ---You must show all work in detail to receive credit.--- (PART 2) Place the above solutions in order of boiling point from lowest to highest. You must show all work in detail to receive credit. Feedback: Colligative properties are discussed in Ch. 13 Comment: No solution Diane...:o( Lesson 7 Quiz Return to Assessment List Part 1 of 3 - 8.0/ 20.0 Points Question 1 of 12 0.0/ 4.0 Points `We discussed several different types of hydrocarbons in this lesson. Which one is saturated? A.alkynes B.alkenes C.alkanes D.all of these E.none of the above Answer Key: C Feedback: Saturation is discussed in 18.5 Question 2 of 12 0.0/ 4.0 Points `We discussed different types of organic reactions in this lesson, one of which was addition. Which if these will undergo this type of reaction? A.C2H6 B.C3H8 C.C2H4 D.all of the above E.none of the above Answer Key: C Feedback: reactions are discussed in 18.9 Question 3 of 12 4.0/ 4.0 Points `Endings (suffixes) in the naming process can tell us a lot about a chemical. For example, a compound named "butanal" would be categorized as a(n): A.ether. B.amine. C.aldehyde. D.alcohol. E.none of the above Answer Key: C Feedback: Good. This chemical group is discussed in 18.4 Question 4 of 12 0.0/ 4.0 Points `Consider the BLUE carbon atom in the formula shown below. What is its molecular geometry? A.bent B.linear C.trigonal planar D.tetrahedral E.none of the above Answer Key: B Feedback: This geometry is discussed in 18.8 Question 5 of 12 4.0/ 4.0 Points `We discussed benzene rings in this lesson. So, consider the compound chlorobenzene. How many carbon atoms would it have? A.5 B.1 C.7 D.6 E.none of the abov [Show Less]