Phenolphthalein - Study guides, Class notes & Summaries
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AS level OCR Chemistry Exam Questions And Answers (Verified And Updated)
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AS level OCR Chemistry Exam Questions 
And Answers (Verified And Updated) 
Isotopes - answerDifferent atomic forms of the same element. Atoms with the same number 
of protons but a different number of neutrons 
Relative atomic mass - answerThe mean mass of an atom of an element, compared to 1/12th 
of the mass of an atom of carbon-12 
Concentration= - answerNumber of moles ÷ Volume 
One mole - answer6.02×10^23 
Number of moles= - answermass ÷ molar mass 
r.t.p - answer25 ºC 
100 kPa (1 atm) ...
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Pharm 121 laboratory Answer Sheets 2023/2024 (100%Verified) - Saint Louis University.
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Pharm 121 laboratory Answer Sheets 2023/2024 (100%Verified) - Saint Louis University. 
Pharm 121 laboratory Answer Sheets. 
Activity 1.1. Identify the following apparatuses used in the chemistry laboratory. Write your answers on the space 
provided before each item. 
_____________________________ a. It is used to hold solids while they are being weighed or to cover a beaker. 
_____________________________ b. It is convenient for collecting a precipitate directly within the vessel in which 
it is...
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CHEMISTRY PRAXIS Practice Exam Questions And Answers (Updated And Verified)
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CHEMISTRY PRAXIS Practice Exam 
Questions And Answers (Updated And 
Verified) 
What is the negative log of 1 X10⁻⁷ - answer7 
When [H₃O⁺] = [OH⁻] the solution is acidic or basic or neutral - answerneutral 
The concentration of H₃O⁺ and OH⁻ in pure water at 25°C - answer1X10⁻⁷ 
Kw - answer1X10⁻¹⁴ 
pH + pOH = - answer14 
What is the concentration of Hydrogen ion when the pH is 2 - answer1X10⁻² 
Using the - log [H⁺] or - log [H₃O⁺] helps you find the - answerpH 
U...
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Lab Report 14:CHEM 106. Acids and Bases are pHun.
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Lab Report 14:CHEM 106. Acids and Bases are pHun. 
Lab Report 14. CHEM 106: Acids and Bases are pHun 
Introduction: 
One of the ways we categorize solutions in chemistry is by dividing them into two 
groups; acids and bases. Acids are substances which donate Hydronium (H3O 
+ 
) ions in aqueous 
solution and have a pH under 7. Bases will produce hydroxide (OH- 
) ions in aqueous solution 
and have a pH over 7. When acids and bases of relatively equal strength react with each other 
they can prod...
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CWEA - Lab Analyst III exam 2023 with 100% correct answers
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What does COLOR measure? - correct answer Amount of color units (CU) in a sample. Color caused by natural metallic ions (Fe & Mg) & industrial wastes. 
 
What is the test summary for COLOR? - correct answer Sample -> Tubes -> Compare to color standards over light source 
 
Which of the following techniques is used to isolate anionic surfactants (as MBAS) from the sample matrix? - correct answer Extraction 
 
In the cyanide determination, which one of the following is not an interfere...
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NCLEX PRACTICE QUESTIONS with answers
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NCLEX PRACTICE QUESTIONS 
1. A patient tells you that her urine is starting to look discolored. If you believe this change is due to medication, which of the following patient’s medication does not cause urine discoloration? 
1.	Sulfasalazine 
2.	Levodopa 
3.	Phenolphthalein 
4.	Aspirin 
2. You are responsible for reviewing the nursing unit’s refrigerator. If you found the following drug in the refrigerator it should be removed from the refrigerator’s contents? 
1.	Corgard 
2.	Humulin ...
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ATI PHARMACOLOGY PROCTORED Brand New Exam With Complete Solutions
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ATI PHARMACOLOGY PROCTORED Brand New Exam With Complete Solutions 
 
The client who is scheduled for an intravenous pyelogram has been instructed to take liquid magnesium citrate on the day before the scheduled procedure. The client asks the nurse about the administration procedure for this medication. Which instruction should the nurse provide to the client? - ANSWER: - "Take the medication on ice." 
 
Magnesium citrate is available as an oral solution. It is used commonly as a laxative befo...
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CWEA - Lab Analyst III Exam Review questions and answers, graded A+/ verified.
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CWEA - Lab Analyst III Exam Review questions and answers, graded 
A+/ verified. 
1,4 Dioxane - Bottle, Preservation, Hold Time - -500ml amber, sulfite/bisulfate, 28 days 
1664/HEM - Bottle, Preservation, Hold Time - -glass, ph<2 HCl/H2SO4, 28 days 
300.0 + 300.1 (All Others)- Bottle, Preservation, Hold Time - -plastic/glass, unpres, 28 days 
300.1 (Bromate, Chlorate, Chlorite) - Bottle, Preservation, Hold Time - -500ml plastic/glass, EDA, 28 
days 
524 VOCS - Bottle, Preservation, Hold Time...
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CHEM 104 Experiment 3 Titrations and titration curves Portage summer 2023
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Experiment #: 3 
Title: Titrations and titration curves 
Purpose: The purpose of this to perform titration analyses, including neutralization titrations, 
which occur between an acid and a base. 
Procedure: 
After gathering the necessary supplies, it was decided that we would perform reactions between 
the following solutions: strong acid/strong base, weak acid/strong base and strong acid/weak 
base. 
Standardization titration of NaOH: Used a strong acid/weak base. We determine the molarity 
of ...
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CHM 101 TUTORIAL QUESTIONS WITH ANSWERS 100% CORRECT.
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CHM 101 TUTORIAL QUESTIONS WITH ANSWERS 100% CORRECT. 
ACID, BASE AND SALT 
1 – What happens when a blue litmus paper is dipped into an acid solution? 
(a)Litmus paper turns red 
(b) Litmus paper turns green 
(c) Colour of litmus paper vanishes out 
(d) No change in the color of litmus paper 
2 – Assertion: Universal indicator gives green color with distilled water. 
(a) Both A and R are true and R is the correct explanation of A. 
(b) Both A and R are true but R is not the correct explanati...
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