Sulfuric - Study guides, Class notes & Summaries
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2023 AQA A-level CHEMISTRY 7405/3 Paper 3 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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2023 AQA A-level CHEMISTRY 7405/3 Paper 3 
Question Paper & Mark scheme (Merged) June 
2023 [VERIFIED] 
Please write clearly in block capitals. 
Centre number 
Candidate number 
Surname 
Forename(s) 
Candidate signature 
I declare this is my own work. 
A-level 
CHEMISTRY 
Paper 3 
Friday 23 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 scie...
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IGCSE Edexcel Chemistry test with complete solution
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Formula of nitric acid 
HNO3 
Name of HCl 
Hydrochloric acid 
Formula of sulfuric acid 
H2SO4 
Test for hydrogen gas 
Lighted splint. Squeaky pop. 
Test for oxygen gas 
Relights a glowing splint 
Test for carbon dioxide 
Turns limewater
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NFPA 1001 Questions and Answers Already Passed
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NFPA 1001 Questions and Answers 
 
Already Passed 
 
Which hazardous material is commonly found in vehicle batteries? 
A) Sulfuric acid 
B) Hydrochloric acid 
C) Hydrofluoric acid 
D) Pentaic acid A) Sulfuric acid 
 
A composite department is a fire department that is: 
A) Staffed by volunteers instead of paid firefighters 
B) Funded by both public and private sources 
C) Funded entirely by private sources 
D) Staffed by both full-time and on-call firefighters D) Staffed by both full-time and on...
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2023 AQA GCSE CHEMISTRY 8462/2H Paper 2 Higher Tier Question Paper & Mark H scheme (Merged) June 2023 [VERIFIED]
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2023 AQA GCSE CHEMISTRY 8462/2H Paper 2 Higher Tier Question Paper & Mark H 
scheme (Merged) June 2023 [VERIFIED] 
GCSE 
CHEMISTRY 
Higher Tier Paper 2 
Tuesday 13 June 2023 Morning Time allowed: 1 hour 45 minutes 
Materials 
For this paper you must have: 
• a ruler 
• a scientific calculator 
• the periodic table (enclosed). 
Instructions 
• Use black ink or black ball-point pen. 
• Pencil should only be used for drawing. 
• Fill in the boxes at the top of this page. 
• Answer all...
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CWEA Grade I Laboratory Analyst Questions and Answers Graded A
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CWEA Grade I Laboratory Analyst Questions and Answers Graded A Chloride - Major anion found in many natural waters - Can impart salty taste in H2O 
What increases concentration of chloride in wastewater Chloride in human diet and softeners flushed into sanitary sewer system 
2 most prevalent methods of measuring chloride argentometric and mercuric nitrate 
Argentometric Titration of sample with standard solution of silver nitrate (AgNO3) - Indicator: Chromate ions (CrO4) - End point: reddish sil...
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2023 AQA A-level CHEMISTRY 7405/3 Paper 3 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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tion A and 50 minutes on Section B. 
2 
Section A 
Answer all questions in this section. 
0 1Ethyl ethanoate can be made by reacting ethanol with ethanoic acid in the presence of 
concentrated sulfuric acid. 
Method 
1. A mixture of ethanol, ethanoic acid, and concentrated sulfuric acid, with 
anti-bumping granules, is heated under reflux for 10 minutes. 
2. The apparatus is rearranged for distillation. 
3. The mixture is heated to collect the liquid that distils between 70 and 85 °C 
4. The ...
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HAZWOPER 40 Exam Prep -Regulation Overview, Toxicology & Hazard Recognition (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A
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HAZWOPER 40 Exam Prep -Regulation Overview, Toxicology & Hazard Recognition (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A 
 
Q: Polyurethane foam, when burnt, gives off: 
 
Sulfuric acid 
Cyanide gas 
Ethane 
Phosphine 
 
 
Answer: 
Cyanide gas 
 
 
 
Q: Animal studies provide most of what we know about the dangerous effects of toxic substances. Humans may react differently than animals exposed to toxic materials. 
 
False 
True 
 
 
Answer: 
True 
 
 
 
Q: A(n...
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INORGANIC- GREEN PACOP | 300 Questions with 100% Correct Answers | Verified | Latest Update 2024
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1. Ammoniated mercury is also known as: 
a. calomel 
b. corrosive sublimate 
c. lunar caustic 
d. white precipitate - D 
2. The rays which have no mass and no charge but of very high energy and excellent penetrating power: 
a. alpha 
b. beta 
c. gamma 
d. x-ray - C 
3. Antacids that cause "rebound" hyperacidity are: 
a. Mg(OH)2 & Al(OH)2 
b. Na2CO3 
c. NA2S2O3 & MgSO4 
d. NaHCO3 & CaCO3 - D 
4. Evolves a gas with a fruity odor when treated with concentrated sulfuric acid and ethanol: 
a. aceta...
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Chem 103 Exam 1 review - UW Madison Questions and Answers Rated A+
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Chem 103 Exam 1 review - UW Madison 
Questions and Answers Rated A+ 
 
### Questions and Answers 
 
**What defines an acid in a solution?** 
 
 A solution that has an excess of H+ ions 
 
--- 
 
**What characterizes a base in a solution?** 
 
 A solution that has an excess of hydroxyl ions (OH-) 
 
--- 
 
**What occurs during neutralization?** 
 The process where an acid and a base are mixed until they neutralize each other, resulting in 
a pH of 7. 
 
--- 
 
**What are the two primary products ...
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CHM 2046 EXAM 3 2024 -2025 WITH 100% ACCURATE SOLUTIONS
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CHM 2046 EXAM WITH 100% ACCURATE SOLUTIONS 
 
 
Acids - correct answer Sour taste 
Dissolve metals 
Turns blue litmus paper red 
Ability to neutralize bases 
 
Hydrochloric acid - correct answer Strong acid 
 
Sulfuric acid - correct answer Strong acid 
Diprotic 
 
Nitric Acid - correct answer Strong acid 
 
Acetic acid - correct answer HC2H3O2 
Weak acid
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