one of the following is primary standard for iodine O a. potassium hydrogen phthalate b. sodium oxalate C. arsenic trioxide d. sodium carbonate

Q: Where can you use phosphorus

A: Phosphorous belongs to the nitrogen family and it is the second member of this group. It is denoted…

Q: QUESTION 11 The following are used as primary standards for NaOH EXCEPT O sulfamic acid sodium…

A:

Q: FeClz is highly corrosive and is irritating to skin and eyes. Which waste container should sol…

A: FeCl3 is a highly corrosive. FeCl3 is very acidic and we used basic container to put in.

Q: What’s the percentage of lithium peroxide

A: We have Lithium peroxide (Li2O2) The atomic mass of lithium = 6.9  The atomic mass of Oxygen = 15.9…

Q: The aluminum sample is not cut into small pieces but rather left as one large piece. a. How will…

A: Introduction :  Percent yield of the reaction is the percent ratio of actual yield to the…

Q: Write the gravimetric factor proportionally for the compounds given below. Line Wanted Weighed…

A:

Q: Which of the following statements is false? A. Temporary hardness is the hardness caused by calcium…

A: Temporary hardness is the hardness caused by calcium and magnesium bicarbonates.

Q: Calculat the Molarity of Iodine per trial using the table

A: A question based on concentration terms that is to be accomplished.

Q: A 1.9574-g of commercially available vegetable oil sample was analyzed to determine its iodine…

A:

Q: An unknown amount of sodium hydroxide (FW= 40) was dissolved in 500 mL distilled water before…

A: Answer: This question is based on acid-base titration where acid is the titrant and base is the…

Q: An aqueous solution of acetone is made by transfering 3.18 mL of liquid acetone to a 100. mL…

A:

Q: Mg+Cu(NO3)2⟶Mg(NO3)2+Cu

A: Yield

Q: Cite application of the acid-sulfate solution in plating different metals commonly used in industry.

A: Application of the acid-sulfate solution in plating different metals commonly used in industry -…

Q: In volumetric analysis, the mass is measured to calculate the concentration of the analyte Select…

A: In volumetric analysis, volume of a solution is measured to calculate the concentration of analyte.

Q: 14

A: The substances that react with acid and bases are called amphoteric substance. Here the zinc oxide…

Q: O a. High concentration of Methane (CH4) in the area + impact of two hard metals which can cau spark…

A: We have to choose correct option

Q: What are the following? In each case, give a short answer. Two examples are qiv Example 1: 'н, "н,…

A: The question is based on the concept of physical chemistry. we have to describe the options given…

Q: Using the half following reation method for the red ction AsO3 (s) t NO3 caq) →H3ASU4 cerq) + NZO3…

A: oxidation is loss of electron and reduction is gain of electron

Q: 10x TE is 0.1 mol/L Tris-Cl and 0.01 mol/L EDTA. It is commonly made from 1.0 mol/L Tris-Cl and 0.5…

A: TE buffer is called Tris-EDTA buffer.

Q: A high COD/BOD in a river is undesirable because It can lead to fish kills O It can deplete the…

A: All the above.

Q: 10. In Experiment D, what is the catalyst? 11. Explain the role of a catalyst in a chemical…

A: Catalyst is a substance which increases the rate of a reaction without getting involved in the…

Q: Assuming an efficiency of 23.20%, calculate the actual yield of magnesium nitrate from 146.9 g of…

A: The chemical balanced reaction between magnesium (Mg) and copper (II) nitrate is given as follows:

Q: Setting of Plaster of Paris takes place due to:(a) Oxidation(b) Reduction(c) Dehydration(d)…

A: Setting of Plaster of Paris takes place due to hydration. The reaction for the Setting of Plaster of…

Q: In titration, what solution is placed inside the Erlenmeyer flask? Group of answer choices diluted…

A: During titration two solutions are used. One with known concentration which placed in burette.

Q: Question 15 The relationship between Ka and pOH is? O Directly proportional

A: pH scale is used to measure acidity or basicity of a solution. If pH of solution is less than 7 then…

Q: How do you measure the amount of heavy metals concentration in soil?

A: Heavy metals refer to any metallic chemical element that has a relatively high density and is toxic…

Q: What volume of 0.420 mol/L sodium hydroxide is needed to neutralize 100 mL of a 6.50 mol/L…

A: A neutralization reaction can be described as a chemical reaction where an acid and base reacts with…

Q: keAssignment/takeCovalentActivity.do?locator=assignment-take [Review Topica) [References] Use the…

A:

Q: Which of the ff. is an steps will remove occluded nitrate in a filtrate of barium sulfate? digestion…

A: Please find your solution below : Occlusion is the process of inclusion of one substance with…

Q: Assuming an efficiency of 41.40%,41.40%, calculate the actual yield of magnesium nitrate formed from…

A: Mg(s) + Cu(NO3)2 ----------> Mg(NO3)2 + Cu Moles of Mg reacting = Mass of MgMolar mass of Mg =…

Q: Name and describe the five (5) primary standards used for NaOH.

A: A standard solution is a solution of accurately known concentration. It can be prepared by…

Q: Which of the following chemical tests cannot be used distinguish the two compounds below: Lucas test…

A: Lucas test and Jones Test are given by Alcohols

Q: Lead storage batteries are used in car engines. Group of answer choices True False

A: Given statement is :  Lead storage batteries are used in car engines Group of answer choices True…

Q: Multiple Choice Each of the numbered items or incomplete statements is followed by answers or by…

A: Dear student, since the given question is a multiple question, hence I solved first question…

Q: three (3) other types of samples that can be analyzed in a typical acidimetric process

A:

Q: What would happen to the Fe2+ concentration if a reduced sample was exposed to lab air for too long

A: Fe2+ have a tendency to be oxidized to Fe3+

Q: The chemical elements involved in MSG and the chemical bonding and properties for MSG.

A: MSG is the short form of chemical compound Monosodium glutamate, commonly known as ajinomoto. It is…

Q: 3. Ba(OH)26) + heat -

A:

Q: B. Surface Area 1. Weigh a small iron nail to the nearest hundredths of a gram and weigh an equal…

A:

Q: What volume of 10.0 M H2SO4 is required to prepare 4.0 L of 0.50 M H2SO4?

A:

Q: The hole concentration?

A: Calculate the donor and acceptor concentrations in the semiconductor. The concentration of the…

Q: What is the Schrödinger equation?

A: The various models were given to explain the structure of an atom. Schrodinger's model is one of…

Q: Dissolve 0.25g NaCl, 0.20g NaHCO3, 0.35g KCl, and 1.5g of glucose in 100 mL distilled water using a…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: ammonium carbonate + chromium (III) acetate Mol: Ionic: Net:

A:

Q: Kw at (0 degrees kelvin) is .02. What is the concentration of H3O+ ?

A: Given, Kw = 0.02. Concentration of H3O+ has to be calculated.

Q: Ammonia is often used as a glass cleaner. Calculate hydronium concentration of a sample of ammonia…

A:

Q: 54.Primary standard used in the standardization of sulfuric acid a. Benzoic acid C. Sodium carbonate…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Drainage from agriculture contains phosphate ions from fertilizers and pesticides, thus, contributes…

A: Mostly  pesticides and fertilizers contains phosphate ions.

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".