Chem 1100Exam # 3 Study Guide Lectures: 12-16Lecture 12 (October 13) Example Test Questions from Lecture 12Q: What percentage of Earth’s water is in the oceans?A: 97%Q: Electronegativity…?A: is a measure of an atom’s attraction for an electron in a chemical bondQ: Which element is expected to have the greatest electronegativity?A: FQ: In general, hydrogen bonds are?A: About 1/10 as strong as typical covalent bondsQ: A polar covalent bond is created when?A: Two atoms share their bonding electrons unequally.Q: What substance has the highest MCL in drinking water in the US?A: NitratesQ: What is biological oxygen demand (BOD)?A: A measure of the amount of dissolved oxygen microorganisms use up as they decompose wastes found in waterLecture 13 (October 15)Example Test Questions from lecture 13Q: Which is the solvent in an aqueous solution?A: WaterQ: The main reason that water supplies are “chlorinated” is?A: to kill disease-causing organisms in the waterQ: Which compound is insoluble in water?A: calcium carbonateQ: How many grams of KOH are present in 0.035 L of a 5.50 M solution?A: 10.8 gQ: A 0.9182 g sample of CaBr2 is dissolved in enough water to give 0.500 L of solution. What is the CaBr2 concentration in this solution?A: 9.19 x 10^-3 MQ: How many joules are required to heat 2000 g of water from 20° C to its boiling point 100° C? The specific heat of water is 4.18 J/G°C and the density of water is 1 g/mL.A: 6.7 X10^5 JQ: A 0.25 M aqueous solution of potassium chloride, KCL, is tested for conductivity using the type of apparatus shown. What do you predict will happen?A: The light bulb will shine brightly. KCl is highly ionized in aqueous solution. Lecture 14 (October 20)Example Test Questions from lecture 14Q: What is the formula for a carbonate ion?A: CO3^-2Q: Most polyatomic ions have…?A: A negative chargeQ: The correct name for CuO is?A: Copper (2) OxideQ: What is the correct name for (NH4)2Co3?A: Ammonium carbonateQ: What is the formula for magnesium iodide?A: MgI2Q: The formula for calcium phosphate is?A: Ca3(PO4)2Q: When table sugar (sucrose, C12H22O11) dissolves in water, which types of attraction between water and sugar molecules occur?A: ionic bondsQ: When sucrose is dissolved in water what kind of conductivity do you think it will have?A: Weak. Sucrose is in the molecular form in an aqueous solution.Q: What is reverse osmosis used for?A: to remove dissolved salts from seawaterQ: The EPA regulates the presence of nitrates and nitrites in water because…?A: they interact with the blood and limit its ability to transport oxygenLecture 15 (October 22)Example Test Questions from lecture 15Q: Most high-level nuclear waste in the United States is currently…?A: sealed in deep pools at the sites where it was producedQ: What role does cadmium metal (Cd) play in a nuclear reactor?A: controls chain reaction (control rods)Q: Which is a common characteristic of both nuclear and conventional coal-burning electric power plants?A: Stream TurbinesQ: Which factor will support the growth of nuclear energy in the future?A: Smaller, more efficient reactor designQ: How did North Korea produce nuclear weapons?A: Removing plutonium from spent fuel rodsQ: A breeder reactor produces which nuclear fuel?A: 239 PuQ: Which of these is not a realistic risk associated with nuclear power plants?A: a nuclear explosion equivalent to that of a nuclear bombQ: The fuel for both nuclear and coal power plants must be mined. Which miners are most likelyto contract black lung disease?A: Coal minersQ: The greatest percentage of background radiation comes from?A: naturally occurring radonLecture 16 (October 27)Example Test Questions from Lecture 16Q: Cobalt-60 is a beta emitter with a half-life of 5 years. Approximately what fraction of the cobalt-60 atoms in a particular sample will remain after 30 years?A: 1/64Q: Which type of reaction can involve changing one type of atom into another?A: neither chemical nor nuclear reactionsQ: Which corresponds to the composition of the ion typically formed by aluminum?A: +3 chargeQ: Which naturally occurring radioactive particles are negatively charged?A: beat particlesQ: When atoms of aluminum-27 are bombarded with alpha particles, a neutron and an element are produced. The particular isotope formed is…?A: 30/15PQ: Which naturally occurring type of radiation has the greatest penetrating power?A: