CHEM 120 Week 8 Final Examination - Practice Questions - Available for Download to Aid in Preparation and Review for the Exam

CHEM 120 Week 8 Final Exam - Question Only – Download For Revision Page 1 1. Question: (TCO 8) 35.0 mL of 0.25 M NaOH is neutralized by 23.6 mL of an HCl solution. The molarity of the HCl solution is (show your work): 2. Question: (TCO 1) How many mL are in 3.5 pints? Show your work. 3. Question: (TCO 3) What is the name of the following compound: Zn3P2? 4. Question: (TCO 3) What is the name of the following compound: AgNO3? 5. Question: (TCO 6) Calculate the pressure, in atmospheres, of 2.78 mol CO(g) in a 4.25 L tank at 51 degrees C. 6. Question: (TCO 6) A gas at a temperature of 95 degrees C occupies a volume of 165 mL. Assuming constant pressure, determine the volume at 25 degrees C. Show your work. 7. Question: (TCO 6) A sample of helium gas occupies 1021 mL at 719 mmHg. For a gas sample at constant temperature, determine the volume of helium at 745 mmHg. Show your work. 8. Question: (TCO 12) If one strand of a DNA double helix has the sequence T T A G C G A C G C, what is the sequence of the other DNA strand? 1. Question: (TCO 7) (a, 5 pts) Given that the molar mass of H3PO4 is 97.994 grams, determine the number of grams of H3PO4 needed to prepare 0.75L of a 0.25M H3PO4 solution. Show your work. (b, 5 pts) What volume, in Liters, of a 0.25 M H3PO4 solution can be prepared by diluting 50 mL of a 2.5M H3PO4 solution? Show your work. 2. Question: (TCO 7) (a, 5 pts) What is the volume percent of a solution prepared by dissolving 21 g of NaOH in enough water to make a final volume of 120 mL? Show your work. (b, 5 pts) How many mL of a 10% solution can be made from the solution in part a? Show your work. 3. Question: (TCO 11) Tungsten (W), with a mass number of 180 and an atomic number of 74, decays by emission of an alpha particle. Identify the product of the nuclear reaction by providing its atomic symbol , mass number , and atomic number . 4. Question: (TCO 13) What is the mRNA sequence for the following segment of DNA: --AAACGTGTGCTAACA-- ? Based upon the mRNA sequence, what is the peptide sequence ? 5. Question: (TCO 5) Given the following unbalanced chemical equation: Al + Cl2- AlCl3 (a, 5 pts) Balance the equation (b, 5 pts) How many moles of AlCl3 are produced from 1.75 mole of Cl2? Show your work………….. (c, 5 pts) What is the molar mass of AlCl3? Show your work (d, 5 pts) Calculate the number of grams of AlCl3 produced from 1.75 mol Cl2. Show your work. 6. Question: (TCO 13) What is the mRNA sequence for the following segment of DNA: --CTCGTGGTTTCATCC-- ? Based upon the mRNA sequence, what is the peptide sequence ? 1. Question: (TCO 12) Transcription is the process by which DNA passes information to 2. Question: (TCO 12) The portion of an enzyme where the substrate “fits” during the reaction is called the 3. Question: (TCO 12) Which of the following is not an unsaturated fatty acid? 4. Question: (TCO 12) The helical structure of certain proteins, such as wool, is a part of the protein’s 5. Question: (TCO 12) Which of the following is a disaccharide? 6. Question: (TCO 12) In cells, protein synthesis occurs on the 7. Question: (TCO 12) Which of the following is a monosaccharide? 8. Question: (TCO 4) The best description of the shape of an ammonia molecule is . 9. Question: (TCO 4) Which of the following substances does not have polar covalent bonds? 10. Question: (TCO 8) According to the Bronsted-Lowry definition, which chemical in the following reaction is the acid? 11. Question: (TCO 8) According to the Bronsted-Lowry definition, which chemical in the following reaction is the base? 12. Question: (TCO 2) Match the atom with the appropriate description. 13. Question: (TCO 10) Match the organic compound with its use or characteristic. 14. Question: (TCO 9) Match the organic compound with its name. Page 2 1. Question: (TCO 8) 45.0 mL of 0.75 M NaOH is neutralized by 53.6 mL of an HCl solution. The molarity of the HCl solution is (show your work): 2. Question: (TCO 1) How many meters are in 175 inches? Show your work. 3. Question: (TCO 3) What is the name of the following compound: Na2S? 4. Question: (TCO 3) What is the name of the following compound: AgNO3? 5. Question: (TCO 6) Calculate the volume, in liters, of a 4.12 mol H2S(g) at 60 degrees C and 1.75 atm. 6. Question: (TCO 6) A gas at a temperature of 185 degrees C occupies a volume of 575 mL. Assuming constant pressure, determine the volume at 15 degrees C. Show your work. 7. Question: (TCO 6) A sample of helium gas occupies 1045 mL at 721 mmHg. For a gas sample at constant temperature, determine the volume of helium at 745 mmHg. Show your work. 8. Question: (TCO 12) If one strand of a DNA double helix has the sequence ACGTCATGGC, what is the sequence of the other DNA strand? Visit Link Below for Answers