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CHEM 120 WEEK 3 QUIZ- WITH 100% CORRECT ANSWERS Week 3 Quiz There are 6 multiple choice and two short answer questions. Each question is worth 5 points. To answer multiple choice questions, highli ght 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...

CHEM120 Week 3 Virtual Lab: Stoichiometric Calculations Part I and Part II – Download To Score An A+ OL Lab 5: Stoichiometric calculations Identify an unknown compound using gravimetric analysis 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 reag...

CHEM120 Week 3 Concepts: Chemical Reactions and Calculations – Download To Score An 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 • Identify the limiting and e...

CHEM120 Week 3 Virtual Lab: Solution Preparation Part I and Part II OL Lab 6: Solution Preparation: From salt to the solution Learning Objectives: • Prepare an aqueous solution of a specific con centration from a pure salt • Correctly use an analytical balance, a volumetric pipette, a volumetric flask, and a measuring cylinder • Explain the relationship between molarity and mass concentration Introduction Prepare to become a solution champion! In this simulation, you will complete all the ...

CHEM120 Week 3 Assignment: Stoichiometry and Solution Chemistry – 100% Correct Answers Week 3 Assignment: 15 points 1. Balance these chemical reactions: (2 point each, 8 points total) 2 NaBr + 1 CaF2 → 2 NaF + 1 CaBr2 2 HCl + 1 CaCO3 → 1 CaCl2 + 1 H2O + 1 CO2 1 FeCl3 + 3 NaOH → 1 Fe(OH)3 + 3 NaCl 1 CaCO3 + 1 H2SO4 → 1 CaSO4 + 1 CO2 + 1 H2O 2. Calculate the formula mass of Al2(SO4)3. (2 points) 342.15 g/mol 3. Calculate the mass of 2.5 moles of NaOH. (1 points) 99.75 g/mol 4. For the ba...

CHEM120 Week 2 Discussion: Atomic Structure – Ibuprofen (Option 1) Initial Post Instructions Option 1: Your initial post in the discussion this week consists of two parts. First, choose a molec ule used in healthcare, industry, or found in a natural source and discuss the importance of this molecule. Be sure to include at least one outside source and make sure to follow APA citation guidelines. In the second part of your initial post, we will be practicing naming ionic and covalent compounds a...

CHEM120 Week 2 Concepts: Understanding the Structure and Naming of Molecules – Download To Score An A+ Introduction Building on the fundamentals of covalent bonding, we will be looking deeper into the structures and behaviors of molecular compounds. We will be exploring how covalent bonding is involved in the structure of these molecules and determines how they interact with the world around them. What shape would you expect the compound Hydrogen Fluoride to have? o Pyramidal o Tetrahedral o L...

CHEM120 Week 1 Quiz: Lab Safety Quiz – With 100% Correct Answers Instructions Write your answer AS TRUE (T) OR FALSE (F). THE QUESTIONS ARE BASED ON THE ACS STARTING WITH SAFETY VIDEO. IF YOU SCORE BELOW 70% (14 CORRECT) YOU MUST WATCH THE VIDEO AGAIN AND RETAKE THE QUIZ AND SCORE ABOVE 70% BEfore you are allowed to do any lab work. Question 5 This study source was downloaded by from CourseH on :34:34 GMT -05:00 0.5 / 0.5 pts This 11. Bermuda shorts, skirts, halter-tops, and loose clothing ar...

CHEM120 Week 2 Virtual Lab: Ionic and Covalent Bonds Part 1 and Part II – Download To Score An A+ OL Lab 2: Periodic Table/Ionic and Covalent Bonds Learning Objectives • Describe the str ucture and organization of the periodic table • Classify elements of a family based on their location in the periodic table • Distinguish metals from other element classes based on typical characteristics • Use the flame color test to identify metals based on their position in the periodic table • Ex...

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 ...