CHEM 120 Week 2 Discussion 1 - Chemical Names (graded) Sulfates, sulfites, nitrates, nitrites—how does one keep all of these similar but different names straight? Let’s begin this discussion by talking about the naming of different compounds. Why would it be important to make sure that you know which compound is associated with which name? To apply these concepts, look at problems 18 & 22 on page 122. Choose one part of the problem, & provide your answer. Check out the following ex...

Carbon electron configuration: 1s22s22p2 Carbon is the element that I have chosen for this post. Carbon has 4 valence electrons and they reside in n=2 shell, specifically the 2s and 2p orbitals. Carbon has 2 unpaired electrons from the 2p orbital. Carbon can form 4 covalent bonds. Carbon can participate in double and triple bonds because it can share 1, 2, or 3 pairs of electrons when bonding. The number of valence electrons in Carbon allows it to share the pairs of electrons with another Carbo...

CHEM 120 WEEK 8 FINAL EXAM REVIEW QUESTIONS AND ANSWERS

CHEM 120 Final Exam Questions and Answers 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): Question: (TCO 1) How many mL are in 3.5 pints? Show your work. Question: (TCO 3) What is the name of the following compound: Zn3P2? Question: (TCO 3) What is the name of the following compound: AgNO3? Question: (TCO 6) Calculate the pressure, in atmospheres, of 2.78 mol CO(g) in a 4.25 L tank at 51 degrees C. Que...

CHEM 120 WEEK 7 DISCUSSION QUESTIONS WITH ANSWERS

CHEMISTRY MIDTERM REVIEW

CHEM 120/CHEM 120 Study Guide Final Exam Chamberlain College of Nursing Course CHEM 120 Institution Chamberlain College Of Nursing The following items are prepared as a general study guide. Please note that your final exam is not limited to the items on this study guide. Be able to predict or know 1) scientific method to design a hypothetical experiment in order to construct a theory Observation: noticing an event Hypothesis: educated guess (prediction) Experiment: design to test hypothesis...

CHEM 120 WEEK 4 DQ ACIDS & BASES

CHEM 120 Final Exam Practice Questions and Answers CHEM 120 Final Exam Practice Questions 1. Question: (TCO 12) The DNA double helix is _____. (Pts. : 5) made up of two polynucleotide strands composed of adenine and thymine a puzzle to geneticists composed of adenine and guanine composed of two chromosomes 2. Question: (TCO 12) Which of the following best describes the action of enzymes in living systems? A specific enzyme generally catalyzes (Pts. :...

Other CHEM-120 Unit 6 Discussion: Radiation – Option 2: Topic of Uranium-238 (GRADED) Hello everyone, For this weeks discussion I will do option 2 on the topic of Uranium- 238. Uranium-238 is the most common isotope of Uranium yielding 99.2 percent within natural uranium. Uranium- 238 has 92 protons and 146 neutrons. It was also recorded that it has a half- life of 4.5 billion years. a. Uranium- 238 is an ionizing radiation. b. Uranium- 238 gives off alpha particles which are not effectively...