Diatomic - Study guides, Class notes & Summaries

Chemistry 101 Final Ivy Tech Exam Questions with 100% Verified Correct Answers Graded A+ Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The balanced chemical equation is: O2 + Mg ⟶ 2 MgO If 4 moles of magnesium totally reacted with more than enough O2, how many moles of MgO would be expected to form? A. 8 Moles B. 2 Moles C. 4 Moles D. 1 Mole E. Not Enough Info - Correct Answer C Which of the following is TRUE? A. Stoichiometry allows predic...

Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The balanced chemical equation is: O2 + Mg ⟶ 2 MgO If 4 moles of magnesium totally reacted with more than enough O2, how many moles of MgO would be expected to form? A. 8 Moles B. 2 Moles C. 4 Moles D. 1 Mole E. Not Enough Info correct answer: C Which of the following is TRUE? A. Stoichiometry allows prediction of how much of the reactants are necessary to form a given amount of product. B. ...

Package Title: Hein Test Bank Course Title: Hein 14e Chapter Number: 3 Question type: Multiple Choice 1) All matter is composed of elements. Approximately how many elements are there? a) 4 b) 10 c) 68 d) 100 Answer: D Difficulty: easy Learning Objective 1: Define an element and write the chemical symbol for an element when given its name. Section Reference 1: Section 3.1 2) The smallest particle of an element that can exist is called a(n) ___. a) atom b) ferrul...

Chemistry 101 Final Ivy Tech Exam Questions with 100% Verified Correct Answers Graded A+ Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The balanced chemical equation is: O2 + Mg ⟶ 2 MgO If 4 moles of magnesium totally reacted with more than enough O2, how many moles of MgO would be expected to form? A. 8 Moles B. 2 Moles C. 4 Moles D. 1 Mole E. Not Enough Info - Correct Answer C Which of the following is TRUE? A. Stoichiometry allows predic...

Atomic Number - The number of protons in the nucleus of an atom. The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. Hydrogen = 1, Carbon = 6, Oxygen = 8 (located on top of element of periodic table) Mass Number - # of neurons + # of protons = mass number (located on bottom of periodic table) Isotopes - Let's say an atom is missing a neutron or has an extra neutron. That type of at...

Sample Chemistry Placement Exam Questions with Certified Answers Answer: Oxygen Aluminum forms a +3 ion. In order for the formula unit Al2X3 to be electrically neutral, the element X must form a -2 ion. Nonmetals in the oxygen column do this. Of these elements, only oxygen is a diatomic gas. Aluminum reacts with element X to form a compound with the formula A2X3. Element X exists as diatomic molecules, X2, in the gaseous state at normal temperature and pressure. Element X must be? A...

Chemistry 101 Final Ivy Tech | Questions and Correct Answers | Latest Update 2024/2025 Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The balanced chemical equation is: O2 + Mg ⟶ 2 MgO If 4 moles of magnesium totally reacted with more than enough O2, how many moles of MgO would be expected to form? A. 8 Moles B. 2 Moles C. 4 Moles D. 1 Mole E. Not Enough Info - Answer -CWhich of the following is TRUE? A. Stoichiometry allows prediction of how much...

CEM 141-Exam 1 Latest Update Already Graded A Matter is made up of Atoms The the smallest distinguishable part of an element Atom Can change overtime according to the evidence available Theories ALL atoms/molecules attract to one another due to Electrostatic forces ________ lower potential energy of a system Attractions _____ raise potential energy of a system Repulsions Stable systems form where The attractive and repulsive forces are EQUAL or the potential energy is at...

Praxis II Middle School Science 5440 Latest Update Graded A+ "Zeroth" Law of Thermodynamics If systems 1 and 2 are both in equilibrium with 3, then 1 and 2 are also in equilibrium with each other. 1st Law of Thermodynamics Matter and energy are conserved (energy in = energy out) in a closed system. 2 elements - liquid at room temperature Hg, Br 2nd Law of Thermodynamics Entropy always increases in a closed system. Not all energy is transferred; some is "lost" as heat. 3r...

HESI A2 CHEMISTRY 2023- 2024 ALL 25 QUESTIONS WITH ANSWERS AND RATIONALES LATEST UPDATES 100% VERIFIED ANSWERS WITH EXPLANATION. 1. Which of the following substances allows for the fastest diffusion? A. gas B. solid C. liquid D. plasma Explanation: Diffusion is fastest through gases. The next fastest medium for diffusion is liquid, followed by plasma, and then solids. In chemistry, diffusion is defined as the movement of matter by the random motions of molecules. In a gas or...