Chem120 week 1 to week 7 - Study guides, Class notes & Summaries

CHEM120 Students: The first exam in your science course is approaching. The General Education Academic Support is here to help. What can you do ahead of Exam 1? 1. Attend a live exam review Thursday, May 12th 6 PM MT Exam 1 Review Join Meeting here: Click here to join 2. Watch the recording of an exam review Click here to watch recorded exam review 3. Schedule a 1:1 appointment with a tutor Click here to book 4. Review the topic videos from weeks 1 and 2 Click her to review ...

CHEM 120 Week # 1 DQ 1 – Scientific Method and Calculations CHEM120 Week 1 Scientific Method & Calculations Let’s explore the scientific method. Here is the situation: We are planting a garden. We have a variety of bulbs & potted plants. We do not have any directions on how or when to plant each of these items. We do not have any gardening books, magazines, or access to the Internet (Oh, the horror!). We need to observe a number of characteristics for these plants. What are some...

CHEM 120 Week # 1 DQ 1 – Scientific Method and Calculations CHEM120 Week 1 Scientific Method & Calculations Let’s explore the scientific method. Here is the situation: We are planting a garden. We have a variety of bulbs & potted plants. We do not have any directions on how or when to plant each of these items. We do not have any gardening books, magazines, or access to the Internet (Oh, the horror!). We need to observe a number of characteristics for these plants. What are some...

Week 8 : Final Exam Questions - Final Exam CHEM120 Final-Exam- 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 0.25L of a 0.2M H3PO4 solution. Show your work. (b, 5 pts) What volume, in Liters, of a 0.2 M H3PO4 solution can be prepared by diluting 50 mL of a 5M H3PO4 solution? Show your work. (Pts. : 10) A. Molarity = moles of solute/liters of solution moles of solute = 0.2 M*0.25 L = 0.05 m...

CHEM120 Week 5 Assignment: Redox and Organic Chemistry – With 100% Correct Answers- Download To Score An A+ 1. For the following redox reactions, determine what is oxidized and what is reduced: ( each, 2 points total) 3 Hg2+ + 2 Fe (s) Fe oxidized, He reduced 2 As(s) + 3 Cl2(g) Cl reduced, As oxidized 3 Hg2 + 2 Fe3+ 2 AsCl3 2. List and describe 3 common things that occur during oxidation-reduction reactions (1.5)? 1. Combustion- flames (not explosions) 2. Disproportionation- simultaneous reduc...

6. (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. (Points : 5) Using Charles’ Law, ( V1/T1) = (V2/T2). First, convert temperature to KELVIN (T1 = t1 +273) Thus, T1 = 95 + 273 = 368. We have V1 (165 mL) & T2 = (25 + 273) = 298. V2 = (V1*T2)/T1 = (165 mL*298)/368 = 133.6 mL. 0 7 Short 16 7. (TCO 6) A sample of helium gas occupies 1021 mL at 719 mmHg. For a gas sample at constant tempera...

CHEM120 Students: The first exam in your science course is approaching. The General Education Academic Support is here to help. What can you do ahead of Exam 1? 1. Attend a live exam review Thursday, May 12th 6 PM MT Exam 1 Review Join Meeting here: Click here to join 2. Watch the recording of an exam review Click here to watch recorded exam review 3. Schedule a 1:1 appointment with a tutor Click here to book 4. Review the topic videos from weeks 1 and 2 Click her to review ...

CHEM120 Week 2 Assignment: Bonding and Naming of Molecules – With 100% Correct Answers Download To Score An A+ Week 2 Assignment (15 points): 1. In terms of electrons, what is an excited sta te? Give an example of an electron configuration for an excited state. (1 points) - An electron is in an excited state when it occupies an energy state that’s greater than its ground state. The ground state of Oxygen for example has an electron configuration that is 1s22s22p4 but the excited state might ...

CHEM120 Week 7 Assignment: Biochemistry Part 2 and Flow of Genetic Information – Download To Score An A+ Laboratory 11: DNA, mRNA and Polypeptide Learning Objectives: • Learn about nuclei c acids • Predict the sequence of a complementary strand of DNA based on the sequence of DNA • Predict the sequence of mRNA based on the sequence of DNA • Predict the sequence of a • polypeptide based on the sequence of mRNA Information stored in DNA (genes) is responsible for all our bodily functio...

CHEM120 Week 6 Assignment: Energy, Nuclear Chemistry and Biochemistry Part 1 Week 6 Lab: Nuclear Chemistry Objectives: • Identify the differences between chemical reactions and nuclear reactio ns. • Identify the concept of radioactive decay. • Identify the nuclear changes associated with alpha, beta or gamma decay. • Write the products of nuclear reactions involving alpha, beta or gamma emissions. • Explain the concept of half-lives and complete half-life calculations. • Identify com...