One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. Suppose an EPA chemist tests a 250. ml. sample of groundwater known to be contaminated with cadmium chloride, which would react with silver nitrate solution like this: CdCl(aq) + 2 AgNO,(aq) - 2 AgCl(s) + Ca(NO₂), (aq) The chemist adds 35.0 mM silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected 6.6 mg of silver chloride. Calculate the concentration of cadmium chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits.

Q: The first five ionization energies of an element are as follows (in kJ/mol): 418.8, 3052, 4120,…

A:

Q: What is the theoretical yield of iron in the reaction of Fe2O3+ 3CO---> 2Fe+ 3CO2 if 180.1 grams of…

A: The balanced chemical equation is: Fe2O3 + 3CO → 2Fe+ 3CO2  Given the mass of the reactant, Fe2O3…

Q: A student reacts benzene, C6H6, with bromine, Br2, to prepare bromobenzene, C6H5Br, and HBr. C6H6+…

A: A student reacts Benzene with Bromine to prepare bromobenzene and HBr. We have to calculate the…

Q: 5. Consider the reaction conditions below. Br NaOEt EtOH A. Predict the S2 product of the reaction.…

A: Given : structure of reactant. Tip : Sn2 occours in one step.

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: Given measurements: We have to multiply or divide these measurements.

Q: What is the correct name for Cu(NO3) copper nitrate copper (1) nitrate O copper (II) nitrate O…

A: Here given the compound formula---- CuNO3 In this compound the metal ion or cation is copper, which…

Q: 8.56 g of MgSO4 is placed into 100.0 mL of water. The water's temperature increases by 6.70 °C.…

A:

Q: Consider the structure of streptimidone to answer the following question. OH need Streptimidone…

A: #Streptimidone: We are given the structure of Streptimidone, and we have to find its enantiomer.…

Q: What are the molecular and empirical chemical formulas of a compound made up of these molecules? :0:…

A:

Q: Determine the concentration in molarity of a 320 mL solution which contains 2.5 moles of solute.

A: Given :  Moles of solute = 2.5 moles  Volume of solution = 320 ml

Q: Chemistry What is the pH of a 0.0730 M solution of HONH3CI (Kb of HONH₂ is 1.1 x 10-8)?

A:

Q: Did you first add the H2O(l) on the right side of the equaton and then added the 2HO- on the left…

A: In this question, we have to answer the above question preceding the previous problem.

Q: Consider the reaction: with A, represented by and B, represented by If 7.00 mol A, and 5.00 mol B,…

A: Limiting reagent is one which is present in less amount than the required amount. Limiting reagent…

Q: If 50.0 g H2O at 13.6 °C is combined with 244 g H2O at 93.7 °C, what is the final temperature of the…

A:

Q: In the Von Wemarn ratio, what are the ways by which we can achieve a lower relative supersaturation…

A:

Q: Draw the major organic structure in a basic solution.

A: when 4‑chloro‑4‑methyl‑1‑pentanol reaction with strong basic conditions favours the Elimination…

Q: Drawing CH3OK THE

A:

Q: What is the pOH of the solution in Part B? Express the pOH numerically to two decimal places. VD…

A:

Q: mixture of 0.2000 mol CO2, 0.1000 mol H2, and 0.1600 mol H2O is placed in a 2.000 L vessel and…

A: Molarity = Moles/Volume

Q: What is the degree of unsaturation of C8H10CINO? a. 3 b.4 c. 5 d. 6 O a Ob O c Od

A:

Q: ▼ K+ + HCO3 + H+ + NO3 → Express your answer as a net ionic equation. Enter noreaction if no…

A: In the total ionic equation, the ions that are present on both side of the reaction is known as…

Q: Calculate the pH of each of the following solutions at 25°C. a. 0.175 M HONH, (Kb = 1.1 × 10-8) pH =…

A: Given, pKb= 1.1×10-8

Q: What are the molecular and empirical chemical formulas of a compound made up of these molecules? :O:…

A: We have to write the molecular formula and empirical formula for the given structure

Q: Determine the molality of NH3 in aqueous solution if the mole fraction NH3 is 0.343.

A:

Q: Write electron configurations for the following ions, and determine which have noble-gas…

A: Here we are required to state the electronic configuration of the following ions.

Q: What are the molecular and empirical chemical formulas of a compound made up of these molecules? HHH…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: 3. Calculate the number of moles of precipitate that would be produced when two solutions were…

A: #3:  We need a balanced equation for each reaction and the limiting reactant to find the moles of…

Q: How to determine stereochemistry of disubstitued cyclohexane molecules, and if they are meso,…

A:

Q: The reaction is found to be first order in 10s first order in SO3² and first order in H¹. If…

A: First we need to write the rate law of given reaction as per orders . Then we would plug the values…

Q: (a) 5. Assign the R and S configurations for all stereogenic centers in the following BI H H₂C Br Br…

A:

Q: Identify the alpha and beta anomer. Which is reducing/ non-reducing sugar? H C-OH -О ОН H Н HO HO Н…

A:

Q: Counting significant digits when measurements are multiplied o... Multiply or divide the following…

A: Rules for determining the number of significant figures in an answer : The result of an addition or…

Q: You created a standard curve and calculated the slope to be 66.41. After synthesizing your copper…

A: Given, Slope= 66.41  weight of copper = 0.052 grams  Absorbance = 0.29 By applying Beer's law to…

Q: Drug A dissociates into four ions to the extent of 70%. How much sodium chloride do you need to…

A: Dissociation = 70% volume of the solution = 250 mL Concentration = 3 g /100 mL MW of drug = 892.54…

Q: What is the pH of a 4.3 × 10⁻⁴ M CsOH solution?

A: Given concentration of CsOH = 4.3 × 10-4 M  Cesium hydroxide is a well known strong base . Strong…

Q: 5) Ph N-OH NH,NHCH,COOEt 6) RCOCH,COCH, Et, N + NH₂OH

A:

Q: Nuclear reactions are so different from anything you’ve learned about chemical reactions because…

A: Nuclear reactions are much different from the normal chemical reactions because they involve in much…

Q: So I thought with a chiral center we see a racemic mixture. Can you explain why we don't see this in…

A: In SN1 reaction , a racemic mixture is formed because carbocation formed is planner and incoming…

Q: How to determine if a compound is a meso compound?

A: Given Meso Compounds. We need to identify the ways through which we can determine it.

Q: When the amount of substrates (reactants) increases, the reaction rate changes differently in…

A: When some amount of substrates (reactants) increases, the reaction rate changes differently in…

Q: A sample of HI was placed in a container and the following reaction was allowed to come to…

A:

Q: Calculate the amount of heat produced when 4.388 L of liquid acetonitrile (C2H3N) is burned in…

A:

Q: What is the ¹H NMR splitting pattern of the indicated hydrogen?

A: Given : structure of molecule.  Tip : n+1 rule

Q: Which of the following equations correctly represents the reaction that formed the white ring?…

A: We have cotton wool soaked with ammonia, NH3 on one side, and cotton wool coaked with concentrated…

Q: Complete the balancing of the following half-reaction, taking place in bas Cr(OH)4 (aq) CrO4² (aq)…

A:

Q: A chemistry graduate student is given 250. mL of a 1.20M chloroacetic acid (HCH₂CICO₂) solution.…

A:

Q: Identify the predominant intermolecular force in each of these substances. Hydrogen bonding H₂O OH…

A: Dispersion forces are predominantly the only forces in non-polar compounds. All hydrocarbon are…

Q: Consider this balanced reaction:     K = 79.51 atm-1 2NO2 = N2O4 If 3.95 atm NO2 is added to a…

A: Nitrogen dioxide forms dinitrogen tetraoxide. The equation for the balanced chemical reaction is as…

Q: 6.A What is % w/v when 15.5 ml of C₂H5OH (density = 0.785 g/ml) dissolves in 251 grams of water?…

A:

Q: QUESTION 1 The following compound is a(n) (term that specifies both functionality and chain length)…

A:

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".