Just number 2 pls. I need complete solutions for review. thank you

Q: Part IlI: Determination of Saturated Solutions

A:

Q: 82. Write Lewis structures that obey the octet rule for each of the following molecules and ions.…

A:

Q: Calculate the umber of milliliters of 0.680 M KOH required to precipitate all of the Cat ions in 181…

A: Given:Balanced equation:CaBr2(aq) + 2KOH (aq) →Ca(OH)2 (s) + 2KBr(aq)It is clear from balanced…

Q: Effect of Common Ions on the Solubility of Ca(OH)2 Answer the concentrations and solubility in 3…

A: Given:  Concentration of the standardized HCl solution = 0.198 M

Q: What is the concentration of hydrochloric acid? Find the concentration using the information given…

A: A question based on acid-base titrations that is to be accomplished.

Q: You want to make a 1/10 dilution of a sample. To do this you would pipet solution and add mL of…

A: You need to pipet 1/10th of the final volume, which is 1/10 of (1 mL+9 mL).Pipet 1 mL of the…

Q: help please answer in text form with proper workings and explanation for each and every part and…

A: \[ H_2SO_4 + 2NaOH \rightarrow Na_2SO_4 + 2H_2O \]From the balanced equation, you can see that one…

Q: Solubility of Ca(OH)2 in 0.25M KCI Answer the concentrations and solubility in 3 significant figure.…

A: From the standardization of HCl data,  average molarity of HCl = 0.198 M  We can find the [OH-] by…

Q: Required Concentration of Reagent 1.37 mM NaCl 27 mM KCI 100 mM Na₂HPO4 18 mM KH₂PO4 Molecular…

A:

Q: A 1.787 g sample containing some Fe2+ ion requires 31.50 ml of a 0.02188 M KMnO4 solution to reach a…

A: We are given with,         31.5 mL of 0.02188 M KMnO4 solution. Let us find the Moles of KMnO4,…

Q: If 120 mL of a 10% stock solution is diluted to 240 mL, the final concentration of the solution is…

A:

Q: Data related to aqueous solutions of sodium chloride (NaCl) and aqueous solutions of ethanol…

A: As the options given only belongs to NaCI solution , so we will examine the NaCI solutions for the…

Q: • You're at the same pharmaceutical company, and they also make magnesium pills. You weigh out 5…

A: High doses of magnesium from supplements or medications can cause nausea, abdominal cramping and…

Q: Describe how  you would make 1L of the following solution using the stocks given below.  Please…

A: Given: The final solution volume = 1 L = 1000 mL            % (m/v) of the final solution = 15 %

Q: The soda ash dose necessary to soften this water to 90 mg/ as CaCcO3 if the soda ash is 90% pure is…

A: CaCO3 = 90mg/l

Q: 1. Calculate the molar concentration of the hydrochloric acid solution if you know that sp.g…

A: Solution:- Provided data:- Specific gravity of HCl solution = 1.19 = 1.19 g/mL % = 37%  We have to…

Q: questions carefully. Write your answers on a separate sheet of aper. 1. You were tasked to check if…

A: Physical property: A quality of matter that would be unrelated to a change inside its chemical…

Q: 2) Did your sample contain Ag+ ions? 3) What test was most critical in determining if your sample…

A: A common method used to identify the ions in a mixture is quantitative analysis. In this method the…

Q: A drug is ordered to be administered IV at the initial rate of 4 mU/min, and may increase by 2…

A: Initial rate = 4 mU/min. Rate in 15 min. = 4 mU × 15                           = 60 mU  Rate in 60…

Q: Weigh out 5g of table salt. Dissolve it in 50mL of distilled water in a container using a stirrer…

A: Given information is as follows: The mass of table salt = 5 g The volume of distilled water = 50 mL…

Q: A reagent bottle contains 250 cm3 of 0,4 mol.dm–3 oxalic acid (C2O4H2) solution. Calculate the mass…

A: Initial concentration of oxalic acid = 0.4 mol/dm3

Q: You need to prepare 2.6L of 3xTAE. You know that 50xTAE requires 242g of Tris Base, 57.1ml of…

A: To prepare 1 L of 50xTAE, we require:   Constituent                         AmountTris base…

Q: Answer questions a through c: a. A CHEM 1215L student prepares a dilute solution of sodium…

A: A) Given : Volume of diluted NaOH solution required = 21.84 mL = 0.02184 L…

Q: A practitioner will make a titration curve. The practitioner pipetted 10 mL of 0.1 M HCl solution…

A: "Since you have asked multiple questions, we will solve the first question for you i.e  (HCl vs…

Q: Table 3 Burette Reading (NaOH) Initial Final Trial reading reading Δν Added Volume: AV (V1) (V2) 1 O…

A: Trial 1 Initial reading on burette V1 = 0 mL Final reading on burette V2 = 16.2 mL Change in volume…

Q: What volume and concentration of H2SOowill be needed to exactly neutralize 20 cm' of 0.3 M NAOH? A…

A: Strong acids and bases are the ones which undergo complete dissociation.Weak acids and bases are the…

Q: Data Sheet sample calculation for the solubility of KNO, using your actual mass from tube #1.…

A: Given: Solution # Recommended mass of KNO3 (g) Actual mass of KNO3 (g per 5 mL H2O) g KNO3100 g…

Q: OH 10) Т. NANE THE FF. ) CH, CH CH, CH CH3 CH3 OH 2) CH, CEC CH CH, CH, OH CH, CH= CH CH, CH CH OH…

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

Q: Question 3 A student performed three aqueous layer titrations in Part 1 and they reported the…

A:

Q: 9-ml broth 1 ml 1 ml 4 x 10³ TMTC Total 1/10 1/100 1/10³ 1/10 1/10⁰ dilution (10¹) (10) (109) (104)…

A:

Q: Show your complete solution and round-off your answers to four decimal places.   A 0.1093-g sample…

A: Number of mmol = Molarity x Volume (mL) Na2CO3  +  2AgNO3  ----->  2NaNO3  +  Ag2CO3 KSCN  +…

Q: 6. What is the purpose of adding NaAc to the centrifugate that may contain Cro (procedure 9-12-2)?

A: NaAc is sodium acetate. Its formula is CH3COONa

Q: 25.64 mL of pure acid, X3A, was titrated w/28.18 mL of 0.3Lel M sodium hydroxide. What is the…

A: The given titration conditions are of acid-base titration of acid X3A with base NaOH.

Q: An aqueous solution is made of the diprotic acid H2A to a concentration of 0.15 M H2A. Ka1 = 3.0 x…

A:

Q: In the laboratory you dissolve 20.0 g of ammonium phosphate in a volumetric flask and add water to a…

A: Molarity,concentration of cations and anions can be calculated as follows

Q: A student needs a 15% hydrochloric acid solution for a chemistry lab. How much 20% hydrochloric acid…

A: Given: Concentration of HCl in final solution required = 15 % Concentration of stock solution 1 = 20…

Q: a molecular-level Draw and upload here as an attachment representation of ammonium chloride (NH4Cl)…

A:

Q: A compound “X” is regulated by health Canada at 2 ug/L in drinking water (maximum allowable…

A: The cut-off level of an analytical method is the minimum concentration of a substance that can be…

Q: What will happen if you Mix the following samples. Put a check beside the box if the combination…

A: Different type of mixtures contain different properties. Miscible mixtures are those in which two or…

Q: Now that you know the moles of NaOH used for each trial as well as the volume of NaOH used for each…

A: Chemical equation for the reaction of NaOH with KHP is: NaOH+KHP→NaKP+H2O 1 mole of NaOH is required…

Q: A 1mL solution contains a 20X diluted sample. How do you make a spike solution that contains 100uL…

A: To make a spike solution containing 100 μL of the standard and 900 μL of the diluting liquid, you…

Q: 2) Did your sample contain Ag+ ions? 3) What test was most critical in determining if your sample…

A: A common method used to identify the ions in a mixture is quantitative analysis. Here the ions in a…

Q: The learners repeat the titration three times. The three titrations are referred to as trials 1. 2…

A: Given three titration diagrams for Trial 1 , Trial 2 and Trial 3  We need to read the volume of acid…

Q: Reactions of Na₂CO3 * Reactions with a carbonate salt and acid are gas evolving! Na₂COs (aq) + Na*…

A: The objective of the question is to balance the equation.

Q: If you have 155 mL solution of a 0.762 M FeCl, solution, how many grams of FeCl, are contained in…

A: Fill in blanks as shown on problem