SCIN 131 - Week 7 Lesson Quiz 2021

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SCIN 131 - Week 7 Lesson Quiz Mar 17, 2021 3 / 3 points `In terms of metallic character, which of these has the least? Question options: Na Cs Rb K 3 / 3 po... ints `In terms of the size of the atom, which of these is the largest? Question options: Rb Na K Li 3 / 3 points During a sunset, molecules interact with light and scatter all but which colors? Question options: purple blue green 3 / 3 points `Which of the following letters represents the principal shell? Question options: s p d f none of these 3 / 3 points `Of the atoms listed below, which one will have at least one electron in its d orbital? Question options: Mg K S none of the above 3 / 3 points I have an atom whose electron configuration can be represented by 1s 22s22p63s23p3. Which of these could it be? Question options: N Ne Li none of the above 3 / 3 points `In terms of frequency, which of these is the highest? Question options: Infrared Radiation Radio Waves X-rays Microwaves Gamma Rays 3 / 3 points `Judging by its electron configuration and its location on the periodic table, how many valence electrons does iodine have? Question options: 53 2 1 none of the above 3 / 3 points `In terms of wavelength, which of these is the longest? Question options: Infrared Radiation Gamma Rays Microwaves X-rays 3 / 3 points `The electromagnetic spectrum is composed of many "colors" that possess different wavelengths. Which color possesses the longest? Question options: yellow orange green violet red 3 / 3 points `How might one describe a base according to the Bronsted-Lowry theory? Question options: a proton donor. produces OH⁻ in solution. produces H⁺ in solution. none of the above 3 / 3 points `Remember that an acid is something that donates hydrogen ions. So, when considering the formula HC2H3O2 (acetic acid), which of the hydrogens listed are the ones that ionize (fall apart into solution as hydrogen ions)? Question options: all 3 of the H's on the right-side. all four H's. one of the H's on the right-side. none of the above. 3 / 3 points If you have a solution with a pH of 7, which of the following would be true? Question options: [H3O+] > [OH-] [H3O+] + [OH-] = Kw [H3O+] < [OH-] 3 / 3 points Acids can be found all around us. Which of the compounds below is associated with making fertilizer? Question options: HBr HCl HF all of the above 3 / 3 points You have a jar of vinegar, in which the active component is acetic acid, HC 2H3O2. If the concentration is 5.0M, what would the hydrogen ion, [H+] concentration be? Question options: 5.0 M >5.0 M 1.0 M 3 / 3 points Which of the following acids would be classified as diprotic? Question options: HCl HNO3 HClO4 HI 3 / 3 points `We discussed many properties and characteristics of acids in this lesson. Which of the following is NOT one that was mentioned? Question options: Acids have a sour taste. Acids dissolve many metals. Acids turn litmus paper red. All of the above are properties of acids. 3 / 3 points When acids react with metals, which of the following products are normally formed? Question options: water salt carbon dioxide none of the above 3 / 3 points `When conisdering a sample of nitric acid with a concentration of 1.6 × 10-3 M, which if these would be a FALSE statement? Question options: This solution could neutralize a base. This solution would turn litmus to red. This solution could dissolve metal. none of the above 3 / 3 points The data below lists the census data for Pattonsburg, Missouri. In what decade did the town see the largest decrease in total population? Year Population 1890 532 1900 1065 1910 1044 1920 1068 1930 1009 1940 1017 1950 883 1960 753 1970 540 1980 502 1990 414 2000 261 2010 348 Question options: 1930-1939 1950-1959 1970-1979 3 / 3 points A data table of the faculty of the university is shown below. If there are 35 male faculty members in the Humanities Department, what is the total number of male faculty at the University? University Faculty Female (%) Male (%) Biological Sciences 6 9 Business 2 4 Education 23 7 Engineering 3 11 University Faculty Female (%) Male (%) Fine Arts 9 8 Heath Sciences 16 8 Humanities 17 14 Physical Sciences 4 11 Social Sciences 9 13 Other 11 15 Question options: 150 100 200 3 / 3 points What is the pH of pure drain cleaner? Question options: 6.50 5.80 10.00 7.40 What is the pH of pure spit? Question options: 5.80 10.00 13.00 6.50 7.40 3 / 3 points 3 / 3 points Battery acid is an acid. Question options: False What is the pH of pure milk? Question options: 3 / 3 points 7.40 13.00 10.00 5.80 Hand soap is an acid. Question options: True False What pH values correspond to acids? 3 / 3 points 4 / 4 points If pure water is considered neutral at 7.0 pH, the acids are any solutions with the pH value under 7.00 pH 4 / 4 points What happens to the pH of a base as water is added? The pH value of a base will start to decrease towards 7.00 pH as the neutral water dilutes it. 5 / 5 points In 2-3 sentences, what was the overall purpose of the lab for this week? The purpose of the lab this week was to learn about acids, bases and pH values. We learned that if pure water is neutral at a pH of 7.00 than any solution greater is a base any solution less is an acid. Also we learned if we dilute an acid with water the pH increases and in a base the pH decreases as they go towards neutral. [Show More]

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