Atoms to grams co - Study guides, Class notes & Summaries

Chem 103 Module 1 to 6 Exam with Verified answers (100 OUT OF 100) Portage learning (Latest Update) MODULE 1 EXAM Question 1 Click this link to access the Periodic Table. This may be helpful throughout the exam. 1. Convert 845.3 to exponential form and explain your answer. 2. Convert 3.21 x 10-5 to ordinary form and explain your answer. 1. Convert 845.3 = larger than 1 = positive exponent, move decimal 2 places = 8.453 x 102 2. Convert 3.21 x 10-5 = negative exponent = smalle...

Chapter 3: Chemical Reactions 1. Which of the following cannot be determined from a balanced chemical equation? a. b. c. d. e. ANSWER: POINTS: TOPICS: OTHER: The number of molecules of reactants and products. The number of atoms of each element reacting. The number of moles of reactants and products. The relative mass of each reactant and product. Whether the reaction will proceed as written. e 1 3.1 Chemical Equations Comprehension 2. In the reaction given below, if 12 moles of aluminu...

m   1. Which of the following is the mRNA start codon in most cases? A. UAA B. AGU C. AUG D. UGA 2. Which of the types of RNA is the smallest? A. mRNA B. tRNA C. rRNA D. 3. Which of the following is not considered a pyrimidine? A. C B. T C. U D. G 4. Which of the following is paired correctly? A. A-G B. C-G C. A-U D. G-T 5. Which of the following characterizes a Western blot? A. Antibody/protein hybridization B. DNA/RNA combination C. RNA ...

atomic mass Correct Answer-the mass of an atom in amu average atomic mass Correct Answer-the weighted average of all of the naturally occurring isotopes of the element mole (mol) Correct Answer-a unit to count number of particles 6.0221415 x 10^23 Correct Answer-the amount of a mol in scientific notation (Avogadro's number) molar mass Correct Answer-the mass of 1 mole of atoms in grams (g/mol) Avogadro's number Correct Answer-6.0221415 x 10^23 molecular mass (molecular weight...

MIDTERM Question 1 4 / 4 pts (CO 1) The primary method used to preserve seafood is: Correct! adding salt. smoking. drying. adding sugar. Chapter 18 Question 2 0 / 4 pts (CO 1) Which of the following temperature ranges provides optimal growth for the majority of food-borne microbes? 20-40 °F 40-60 °F 60-80 °F Correct Answer 80-100 °F Chapter 18 Question 3 4 / 4 pts (CO 1) Which of the following is NOT a recommended method for preventing cross- contamination? washing utensils and cutting board...

Test Bank for Chemistry 10th Edition Zumdahl Full Chapters Complete Questions and Answers. Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 1 1. The first people to attempt to explain why chemical changes occur were a. alchemists b. metallurgists c. physicians d. physicists e. the Greeks ANSWER: e POINTS: 1 DIFFICULTY: Easy REFERENCES: 2.1 QUESTION TYPE: Multi-Mode (Multiple choice) HAS VARIABLES: False KEYWORDS: Chemistry | early atomic...

Propane (C₃H₈) reacts with oxygen in the air to produce carbon dioxide and water. In a particular experiment, 38.0g of Carbon Dioxide are produced from the reaction 22.05g of propane with excess oxygen. What is the % yield in this reaction? -94.5 -66.0 -86.4 -38.0 -57.6 correct answer: 57.6 Gaseous argon has a density of 1.40 g/L at standard conditions. How many argon atoms are in 1.00L of argon gas at standard conditions? -4.76x10²² -6.02x10²³ -3.43x10²⁵ -1.59...

First Semester Study Guide AP Chem Buck Exam 196 Questions with Verified Answers Salts containing which of the following ions are generally insoluble in cold water? a. nitrate b. acetate c. phosphate d. potassium e. ammonium - CORRECT ANSWER C. Phosphate Which of the following changes alone would cause a decrease in the value of Keq for the reaction represented above? a. Decreasing the volume of the reaction vessel b. Adding a catalyst c. Increasing the volume of the reacti...

Chapter 03 - Atoms and Elements 1. The most abundant element in the earth's crust by mass is: a. Hydrogen b. Carbon c. Oxygen d. Silicon e. Nitrogen ANSWER: POINTS: 2. Which of these statements about atoms is incorrect? a. Atoms are the smallest visible amount of an element. b. Atoms are composed of protons, neutrons, and electrons. c. Atoms are the building blocks of all matter. d. Atoms are the smallest identifiable unit of an element. e. There are 91 different naturally occurrin...

What is the definition of a scientific theory? correct answer: a model that explains the underlying reasons for observations and laws What term best describes a brief statement that summarizes many past observations and predicts new ones? correct answer: scientific law Which of the following is an example of a scientific law? correct answer: In a chemical reaction, matter is neither created nor destroyed. Which of the following would be considered a theory? correct answer: Helium ba...