Ammonia nh3 - Study guides, Class notes & Summaries

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...

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...

AQA GCSE Separate Science Chemistry – Paper 1 Higher Tier Predicted Paper 2023 With marking scheme Name …………………………………………………………………… Date ………………… 1 hour 45 minutes allowed. You may use a calculator and an AQA periodic table. Grade boundaries These are VERY rough guesses! Getting a 7 on this paper does not guarantee you the same mark in the exam. • 9 70% • 8 60% • 7 50% • 6 45% • 5 35% ...

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...

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...

1% concentration of Ammonia is equal to what in parts per million? A. 10 PPM B. 100 PPM C. 1,000 PPM D. 10,000 PPM - Answer-D. 10,000 PPM 1/2 % of Ammonia is it deadly concentration. A. True B. False - Answer-A. True (5,000)PPM Ammonia is what on the PH scale? A. 11.6 B. 3.7 C. 7.0 D. 5.2 - Answer-A. 11.6 More than 100 pounds release of NH3 in 24 hours is a reportable for release . A. True B. False - Answer-A. True There are four primary types of injury with exposure to liquid Am...

(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 219 Module 6 Test Questions and Answers 100% Solved amine derivative of ammonia where one or more hydrogen replaced by carbon-based groups primary amine R-NH2 secondary amine R2NH tertiary amine R3N Ammonia NH3 quarternary amine a configuration in which nitrogen has four bonds with other atoms and, as such, the molecule has an electron deficit name by alkyl group +amine at the end naming simple amines

AQA A-Level Biology Paper 1 Predicted Paper 2023 attached with markingscheme Name …………………………………………………………………… Date ………………… 2 hours allowed. You may use a scientific calculator and a ruler with millimetre measurements. Grade boundaries These are VERY rough guesses! Getting a B on this paper does not guarantee you the same mark in the exam. • A* 65% • A 55% • B 45% • C 40% • D 35% • E 30% ...