C2h6o - Study guides, Class notes & Summaries

CHEM 121 FINAL EXAM QUESTIONS WITH VERIFIED ACCURATE ANSWERS || ALREADY GRADED A+ < 2024 UPDATED VERSION > 1. What is the percentage of oxygen, by mass, in calcium phosphate? - ANSWER 41.3% 2. How many number of moles are present in 200. g of sodium bicarbonate (NaHCO3)? - ANSWER 2.38 mole 3. What is the molecular formula for a compound with an empirical formula of CH2O if its experimentally determined molecular weight is 180 amu? - ANSWER C6H12O6 ...

Organic Chemistry, 6e (Smith) Chapter 1 Structure and Bonding 1) What is the ground-state electronic configuration of a carbon atom? A) 1s2, 2s2, 2p5 B) 1s2, 2s2, 2p2 C) 1s2, 2s2, 2p6 D) 1s2, 2s2, 2p4 Answer: B Difficulty: 1 Easy Section: 01.01 Topic: Structure and Bonding Bloom's: 2. Understand Chapter: 01 Accessibility: Keyboard Navigation 2) What is the ground-state electronic configuration of a fluorine atom? A) 1s2, 2s2, 2p2 B) 1s2, 2s2, 2p3 C) 1s2, 2s2, 2p4 D) 1s2, 2s2, 2p5 Ans...

Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the students’ responses to questions and that every associate understands and applies it in the same correct way. As ...

Chapter 3—Chemical Equations and Reaction Stoichiometry MULTIPLE CHOICE 1. Which of the following is not a consequence of the Law of Conservation of Matter? a. It provides a basis for balancing chemical equations. b. It means that there will be no observable change in the quantity of matter during a chemical reaction. c. As a result, there will be the same number of moles on both the reactant and the product side of a balanced equation. d. It can be stated as "matter is neither creat...

Chem 103 Exam 1 Correct Answers Atoms are made up of protons, neutrons, and electrons. The charge on an electron is ____ - -1 Atoms are made up of protons, neutrons, and electrons. The charge on a neutron is ____ - 0 How many atoms are there in a single molecule of glucose (C6H12O6)? - 24 How many atoms are there in a single molecule of ethanol (C2H6O)? - 9 Hydrogen makes _____ bond(s) - 1 Oxygen makes _____ bond(s) - 2 Carbon makes _____ bond(s) - 4 ...

CHAPTER 3: Chemical Foundations: Elements, Atoms, and Ions 1. What is the most abundant element on the Earth (including the crust, oceans, and atmosphere)? A. silicon B. oxygen C. hydrogen D. iron E. carbon ANS: B PTS: 1 TOP: Test: Chapter Test NOT: worldofchem_2013 2. What is the most abundant element found in the human body? A. oxygen B. water C. hydrogen D. calcium E. carbon ANS: A PTS: 1 TOP: Test: Chapter Test NOT: worldofchem_2013 3. The symb...

1. What is the ground-state electronic configuration of a carbon atom? A) 1s2, 2s2, 2p5 B) 1s2, 2s2, 2p2 C) 1s2, 2s2, 2p6 D) 1s2, 2s2, 2p4 2. What is the ground-state electronic configuration of a fluorine atom? A) 1s2, 2s2, 2p2 B) 1s2, 2s2, 2p3 C) 1s2, 2s2, 2p4 D) 1s2, 2s2, 2p5 3. What is the ground-state electronic configuration of a magnesium cation (Mg2+)? A) 1s2, 2s2, 2p6 C) 1s2, 2s2, 2p6, 3s2 B) 1s2, 2s2, 2p6, 3s1 D) 1s2, 2s2, 2p6, 3s2, 3p2 4. What is the ground-state electronic ...

QUESTIONS AND ANSWERS

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...

Instructions: CHEM 102 General Chemistry I Spring 2015 Exam 3 -­‐ Version A Questions and Answers 1. Do NOT open this exam until you are told to do so. Opening the exam before the start of the exam is considered an act of Academic Dishonesty. 2. All answers must be bubbled into the scantron answer sheet. 3. No credit will be given for answers written on this exam. 4. You must use a #2 pencil to bubble in the answers on your scantron. 5. This is a multiple choice exam consistin...