Nh3 - Samenvattingen, Aantekeningen en Examens

OCR CHEMISTRY A LEVEL WITH COMPLETE SOLUTIONS   Haloalkane to nitrile - ANSWER-nucleophilic substitution ethanolic NaCN or KCN heat Haloalkane to primary amine (also makes NH4X) - ANSWER-Nucleophilic substitution Excess ethanolic NH3 with no further substitution HEAT under PRESSURE acyl chloride/acid anhydride to SECONDARY amide - ANSWER-Nucleophilic substitution primary amine Acyl chloride/acid anhydride to PRIMARY amide - ANSWER-Nu...

(Lecture 3-5) A water contains two nitrogen species. The concentration of NH3 is 30 mg/L NH3, and the concentration of NO3 - is 5 mg/L NO3 - . What is the total nitrogen concentration in units of mg N/L? Correct Answer-25.8 mg N/L (Lecture 3-5) What pH is required to reduce a high concentration of dissolved Mg2+ to 43 mg/L? Ksp for the following reaction is 10-11.16. Mg(OH)2(s) Mg2+ + 2OH Ksp = 10-11.16 Correct Answer-Ph=9.79 (Lecture 3-5) How long will it take the carbon monoxide (CO) con...

Chem 210 Final: Mastering Chem 2023 With Complete Updated Solution Highest: Nh3 SbH3 AsH3 PH3 - answerThe hydrides of group 5A are NH3, PH3, AsH3, and SbH3. Arrange them from highest to lowest boiling point. Dispersion - answerWhat is the strongest type of intermolecular force present in H2? Co2 - answerIdentify the compound that does not have dipole-dipole forces as its strongest force. 1 and 2 - answerWhich of the following must be overcome during the boiling of acetonitrile, CH3CN? 1. d...

2023 AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Monday 12 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxe...

AFO (Aquatics Facilitator Operator) Glossary Exam Study Guide with Complete Solutions Latest Updated 2024/2025 Acid - Correct Answer A commonly use chemical compound dosed into swimming pools that releases hydrogen ions in water thereby lowering pH Algae - Correct Answer a simple nuisance plant life that colonizes in water under favorable conditions Alkalinity - Correct Answer A measure of the pH-buffering capacity of water Aluminum Sulfate - Correct Answer Alum; a flocculating agent f...

A uniform combination of two or more pure substances can be classified as _____. Correct Answer-a homogeneous mixture Which of these pure substances is an element? - C12H22O11 (sucrose, table sugar) - O2 - CH4 (methane, the primary component of natural gas) - NH3 (ammonia, a component of fertilizer) Correct Answer-O2 Based on the organization of the periodic table, periods _____. Correct Answer-are the horizontal rows To which group and period does potassium belong? Correct Answer...

CEM 142 MOCK EXAM 2 QUESTIONS AND ANSWERS ALREADY PASSED Imagine a reaction in which compound A (which is a blue compound) reacts with compound B (which is a yellow compound) to give AB. A2 + B2 --> 2AB What can you say about the color of compound AB? It is impossible to predict what the color of AB is from the information given Which acid is the strongest of CH4 NH3 OH2 and HF HF because H and F are small atoms - more bond overlap, not willing to share electrons, most positive ...

Question 1 Correct 5.00 points out of 5.00 According to which scientific law does the entropy of the universe increase in spontaneous processes and remain unchanged in equilibrium processes? Select one: A. 1st universal law B. 1st law of entropy C. 2nd law of thermodynamics D. 3rd law of thermodynamics E. 1st law of thermodynamics Straighterline CHEM101 General Chemistry I Graded Exam 4 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline...

BIO-1402- CH. 22 the Origin and History of Life Questions and Answers 100% Pass Cell Theory 1. All organisms are composed of cells 2. Cells are the smallest living things 3. Cells arise only from pre-existing cells What are the required minimal set of macromolecules protobionts must have? 1. Self- replicating lipid vesicles 2. Self-replicating genetic material. Plausible progression of Cells 1. Formation of organic molecules (spontaneous) 2. Formation of organic polymers 3. ...

Given the pKa's of several polyprotic acids choose the strongest acid among the ions given below. H3PO4: pKa1=2.16, pKa2=7.19, pKa3=12.32 H3AsO4: pKa1=2.26, pKa2=6.77, pKa3=11.29 H2SO3: pKa1=1.77, pKa2=7.21 H2CO3: pKa1=6.37, pKa2=10.33 > HCO3- > H2AsO4- > H2PO4- > HPO42- > HSO3- - Ans: H2AsO4- Which of the following is the weakest base? > (CH3CH2)2NH (pKb = 3.07) > NH2OH (pKb = 7.97) > (CH3CH2)3N (pKb = 3.25) > CH3CH2NH2 (pKb = 3.25) > (CH3)3N (p...