Chem120 week 3 - Study guides, Class notes & Summaries

CHEM120 INTRODUCTION TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY 2024| LAB REPORT FOR WEEK 3

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 ...

Initial Post Instructions For your initial post pick a combination of one of the following molecules, one mass quantity, and one total solution volume from this table. You may not use the same combination as another student so be sure to read any existing peers postings before posting your own.

Answer the following questions (1 point each) to add up to 5 points back to your exam score. 1. Question: Choose any isotope of an element and answer the following a. Write the isotopic formula b. How many neutrons in the isotope? c. How many protons are in the isotope? d. How many electrons are in the isotope? e. What is the mass number for the isotope? 2. Question: Choose any molecular compound with 3 to 5 atoms in it. a. Draw the Lewis structure. b. Give step by step directions...

Learning Objectives: • Explain the relationship between mass, molecular weight, and numbers of atoms or molecules and perform calculations deriving these quantities from one another • Perform mass-to-mass stoichiometric calculations via conversions to moles • Identify the limiting and excess reagents in a chemical reaction • Calculate the theoretical, actual and percent reaction yield • Define Avogadro’s number and describe the mole quantification of matter

CHEM120 INTRODUCTION TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY 2024| LAB REPORT FOR WEEK 3 SCORED A+ OL Lab 3: Stoichiometry: Avogadro’s number and molecular calculations / Solution Preparation: From salt to solution Learning Objectives: • Explain the relationship between mass, molecular weight, and numbers of atoms or molecules and perform calculations deriving these quantities from one another • Perform mass-to-mass stoichiometric calculations via conversions to moles • Ident...

Required Resources Read/review the following resources for this activity: • Textbook: Chapter 5, 6, 11 • Unit 3 lesson Initial Post Instructions For your initial post pick a combination of one of the following molecules, one mass quantity, and one total solution volume from this table. You may not use the same combination as another student so be sure to read any existing peers postings before posting your own.

Week 3 Quiz There are 6 multiple choice and two short answer questions. Each question is worth 5 points. To answer multiple choice questions, highlight the right answer. To answer the short answer questions, show your work and calculations. DO NOT CHANGE THE FORMAT OF THE QUIZ PLEASE. 1. (TCO 5) Which coefficient is placed in front of O2 to complete the balancing of the following equation? C5H8 + ? O2 --> 5 CO2 + 4 H2O 1 3 5 6 7 2. TCO 5) Which should be the coefficient of hydro...

1. Balance these chemical reactions: (2 point each, 8 points total) 2. Calculate the formula mass of Al2(SO4)3. (2 points) 3. Calculate the mass of 2.5 moles of NaOH. (1 points) 4. For the balanced chemical equation: Answer the following questions: a. If you produce 7 mols of KBr, how many mols of MgBr2 did you need? (1 point) b. If I have 2 moles of MgBr2, how much KBr can I make in moles? (2 points) 5. You are making 100 ml of a 2 M solution of HCl. How many ml of a 4 M HCl solution will y...

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...