Ammonium sulfide - Study guides, Class notes & Summaries

Chapter 3 - Bonding: General Concepts 1. The force between two bodies having identical electric charges _____. a. is a force of repulsion b. is a force of repulsion if the charges are negative, and one of attraction if they are positive c. increases as the bodies are moved further apart d. is independent of the distance between them e. is directly proportional to the distance between them ANSWER: POINTS: 2. In which pair do both compounds exhibit predominantly ionic bonding? a 1 ANSWER:...

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 ...

Chem test! Questions and Answers 2024

Texas Class D Water Test Questions and Answers Rated A Who is authorized to remove a lock and tag placed on a piece of equipment to isolate it for maintenance? Only the person who placed the lock and tag In addition of an emergency residual pressure of 20 psi, what is the minimum normal operating pressure a public water supply system should maintain? 35 psi What is the minimum distance separating installed water mains from any sewer lines or other possible contaminated lines? 9 feet What is ...

Waste Water D license Study Exam Questions and Complete Solutions Water Resources in Texas includes lakes, rivers, bays, estuaries, wetlands, ground water, and storm (1-3) - Answer: False Water Polluntants include organic and inorganic material, heat, and radiation (1-4) - Answer: True In Texas, Clean water is needed to provide for human comsumption and recreation, Maintain aquatic habitats for wildlife, recharge ground water, and provide for industry. (1-4) - Answer: False Two sourc...

Chapter 3—Chemical Reactions MULTIPLE CHOICE 1. Nitroglycerin decomposes violently according to the balanced chemical equation below. 2 C3H5(NO3)3( )  3 N2(g) + 1/2 O2(g) + 6 CO2(g) + 5 H2O(g) Which of the following statements concerning this reaction is/are CORRECT? 1. Two moles of nitroglycerine will produce three moles of nitrogen and five moles of water. 2. Four molecules of nitroglycerine will produced one molecule of oxygen and twelve molecules of carbon dioxide. 3. Six grams...

Chapter 02 - Atoms, Molecules, and Ions 1. Which of the following statements concerning atomic structure is/are correct? 1. Neutrons and electrons are found in space as a cloud around the nucleus. 2. The nucleus contains all the positive charge of an atom. 3. Electrons surround the nucleus and account for the majority of an atom's volume. a. 1only ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 2only c. 3only d. 2and3 d 1 False 2.1 Atomic Structure--Protons, Electrons, and Neu...

TSI Agar Exam 49 Questions with Verified Answers What is the agar used in the Triple Sugar Iron Agar - CORRECT ANSWER TSI (triple sugar agar medium) slant medium What does the TSI agar diffrentiate - CORRECT ANSWER it differentiates bacteria based on sulfur reduction and glucose, lactose, and sucrose fermentation What is the substrate used in the TSI experiment? - CORRECT ANSWER Sodium thiosulfate What is the enzyme used in the TSI experiment - CORRECT ANSWER Thiosulfate reductase ...

Chapter 1—Basic Concepts of Chemistry MULTIPLE CHOICE 1. A hypothesis is a a. mathematical formula that models a pattern of behavior. b. concise statement of a behavior that is always the same under the same conditions. c. set of experiments designed to test a theory. d. well-tested, unifying principle that explains a body of facts. e. tentative explanation or prediction based upon experimental observations. ANS: E 2. A theory is a a. concise statement of a behavior that is always t...

Chapter 1—The Foundations of Chemistry MULTIPLE CHOICE 1. Which of the following statements is incorrect? a. A body in motion possesses kinetic energy because of its motion. b. An object possesses potential energy because of its position or composition. c. Nuclear energy is an important kind of potential energy. d. Chemical reactions and physical changes that release energy to their surroundings are endothermic. e. The Law of Conservation of Matter and Energy states that the combined ...