3. Lead is a toxic element that can cause many symptoms, including mental retardation in children. If a body of water is polluted with lead ions at 30 ppb (parts per billion), what is the concentration of lead expressed as molarity? (Note: The density of water is 1 g/mL, and ppb = grams per 10° grams of solution) А. 1.4 х 1010 M Pb2* В. 1.4 х 107M Pb2+ С. 6.2х 107M Pb* D. 6.2 x 106 M Pb²+

Q: A 18.0 wt% solution of CaCl₂ (110.98 g/mol) has a density of 1.165 g/mL. What is the mass, in…

A:

Q: 100 90 NANO 70 80 CaC 50 60 Pb(NO)2 40 NaCl 30 KCI 20 10 KCIO, Ce,(SO) Solubility (g of salt in 100…

A: The power of a solid, liquid, or gaseous chemical compound (referred to as the solute) to dissolve…

Q: When 4.36 g of sodium hydroxide are added to 125 mL of 3.80×10−1 M HCl, what is the concentration,…

A:

Q: A stock solution is made by dissolving 2.35 g of aluminum nitride in 250.0 mL of water. a) What is…

A: Molarity is defined as total number of moles of solute present in 1000 ml of solution Molarity =…

Q: Many metal ions are precipitated from solution by the sulfide ion. As an example, consider treating…

A: Given: The reaction is as follows, CuSO4(aq) + Na2S(aq) → CuS(s) + Na2SO4(aq) Molarity of Na2S…

Q: SOlve this

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

Q: Boric acid, H3BO3, is commonly used in eyewash solutions in chemistry laboratories to neutralize…

A:

Q: 100.0 mL of an aqueous solution containing 0.250 M KOH(aq) is mixed with 100.0 mL of an aqueous…

A: First of all, we need to write down the balanced chemical.  The molar mass of Fe(OH)3 = 106.87g/mol

Q: A 20.00 mL sample of vinegar was titrated to the end point with 31.70 mL of 0.15 M NAOH solution.…

A: The balanced reaction can be given as follows: NaOH(aq)+CH3COOH(aq)→CH3COONa(aq)+H2O(l) The moles of…

Q: Apollo 13 Lunar Mission You are a NASA engineer. You are the chief engineer for the Apollo 13…

A: Given data; 6.7×1025 particles of NaOH are present There are three astronauts and each will emit 500…

Q: In the laboratory, a student dilutes 22.9 mL of a 11.9 M nitric acid solution to a total volume of…

A: Moles of solute remain constant during dilution. Moles of solute = molarity x volume of solution…

Q: One of the active ingredients in stain removers is sodium percarbonate (Na2CO3), and a typical stain…

A: Percentage w/v of Na2CO3 = 6.5 % Volume of solution = 150.0 mL % w/v is given by: %w/v=mass of…

Q: Consider a 0.586 M aqueous solution of barium hydroxide, Вa(ОН)2Ba(ОН)2 (аq). How many grams of…

A:

Q: A stock solution of HNO, is 12.0 M of HNO, . If 415.0 mL of water is added to 85.00 mL of this stock…

A: M1 x V1 = M2 x V2 Where, M1 = initial molarity;  V1 = initial volume M2 = final molarity;   V2 =…

Q: Boric acid, H3BO3, is commonly used in eyewash solutions in chemistry laboratories to neutralize…

A: Given : Molarity of NaOH = 0.475M

Q: One way to remove lead from water is to add a source of iodide ion so that the lead will precipitate…

A:

Q: Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to…

A: Sodium hydroxide reacts with KHP to form the sodium-potassium phthalate and water. The reaction is…

Q: To dilute 250.0 mL of 1.00 M HCl to a concentration of 0.200 M, what must the final volume of the…

A: M1 x V1 = M2 x V2 Where, M1 = initial concentration;  V1 = initial volume             M2 = final…

Q: In the laboratory, a student adds 46.1 mL of water to 21.0 mL of a 0.779 M perchloric acid solution.…

A:

Q: 1. Does an insoluble compound form when solutions of Ca(NO3)2 and K2SO4 are mixed? If so, what is…

A: 1. A balanced chemical equation in accordance with the question is written below, K2SO4 + (CaNO3)2…

Q: Many metal ions are precipitated from solution by the sulfide ion. As an example, consider treating…

A: The reaction taking place is CuSO4 (aq) + Na2S (aq) ------> CuS (s) + Na2SO4 (aq) Given :…

Q: 4) A 50 mL sample taken from a vinegar sample was diluted to 500 mL with distilled water. The 25.0…

A:

Q: In the final titration, the amount of salicylic acid (the active ingredient) in aspirin is…

A: 1 mol of NaOH neutralises 1 mol of salicylic acid.

Q: 1. Forgetful Freddy weighed his KHP sample, but forgot to bring his report sheet along, so he…

A: The balanced reaction of KHP and NaOH is given as follows:

Q: A student weighs out a 3.22 g sample of K2SO4 , transfers it to a 100. mL volumetric flask, adds…

A:

Q: In the analytical chemistry laboratory, Ramli has to perform a titration of barium chloride (BaCl2)…

A: Given mass of solution = 0.108 M  Given volume of solution= 2.0 L

Q: A mathematical equation useful for dilution calculations isM(dil)xV(dil)xM(conc)xV(conc) (a) What…

A: molarity is the number of moles of solute dissolved in a 1 liter of…

Q: The iodine contained in every 1 mL of the 0.010 M iodine solution in the buret will react with 1.76…

A: Given, Every 1 mL of iodine solution reacts with ------- 1.76mg of ascorbic acid /Vitamin C. 7.11mL…

Q: The town of Andover obtains drinking water from three sources that together produce up to 6.81 × 107…

A: (a) Water produced per day = 6.81 x 107 LConcentration of iron (III) chloride = 9.248 x 10-5 MAmount…

Q: Dilution a. 53.4 mL of a 1.50 M solution of NaCl is on hand, but you need a 0.800 M solution. How…

A: Dilution of the solution: On dilution of the solution with the pure water, the mole of solute…

Q: Boric acid, H3BO3, is commonly used in eyewash solutions in chemistry laboratories to neutralize…

A:

Q: 5.7418 g of iron III nitrate (Fe(NO3)3), MW = 241.9 g/mol), a soluble ionic compound, is dissolved…

A: Given, Mass of iron (III) nitrate [Fe(NO3)3] = 5.7418 g Molecular Weight of iron (III) nitrate…

Q: A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the…

A:

Q: Citric acid, H3 C6 H; O7 occurs in plants. Lemons contain 5% to 8% citric acid by mass. The acid is…

A: Given- Molal concentration of citric acid solution = 0.657 m Density of solution = 1.049 g / ml To…

Q: 3. A 12.5% (W/w) NiCl2 (129.61 g/mol) solution has a density of 1.149 g/mL. Calculate a. the molar…

A: A 12.5% (w/w) Nicl2 solution  has density 1.149g/ml. we have to calculate  the molar concentration…

Q: Baking soda (sodium bicarbonate, NaHCO3) reacts with acids in foods to form carbonic acid (H2CO3),…

A: Baking soda or sodium bicarbonate reacts with lactic acid to give sodium salt of lactic acid along…

Q: 6) Vinegar can be assayed to determine its acetic acid content. Determine the molarity of acetic…

A:

Q: In many areas, the drinking water standard for nitrate ions is 5.00 ppb. Calculate the mass, in μg,…

A:

Q: Calcium sulfate  (MM= 136.1406) dissolves in cold water to the extent of 0.241 g per 100. mL. What…

A: Calcium sulfate (MM= 136.1406)  CaSO4- = 0.241 g Volume of solution = 100 mL = 0.100 L   The…

Q: 1. A stock potassium dichromate solution (K,Cr,0,; molar mass is 294.2 g/mol) is prepared for…

A: the solution of pottasium dichromate is given

Q: 100 90 NaNO 80 70 CaCl, Pb(NO)2 60 50 40 KCI NaCi 30 20 KCIO, 10 Ce,(SO) O 10 20 30 40 50 60 70 80…

A: From given graph , in 100 g H2O Solubility of K2Cr2O7 at 80 degree Celsius = 57 g  Solubility of…

Q: Q. A 12.5% (w/w) NICI2 (129.6l g/mol) solution has a density of 1.149 g/mL. Calgulate(a) the molar…

A:

Q: The amount of I3- in a solution can be determined by titration with a solution containing a known…

A: The balanced titration reaction taking place is  2 S2O32- + I3- ---------> S4O62- + 3 I-  Given :…

Q: student weighs out a 12.8 g sample of Ni(NO3)2, transfers it to a 300. mL volumetric flask, adds…

A: Molarity of a solution is defined as the number of moles of solute present in one liter of solvent.…

Q: Consider a solution prepared by combining 45.0 g of BaCl2 with enough water to prepare a 750.0 mL of…

A: Given information: Mass of barium chloride = 45.0 g Volume of solution = 750.0 mL Concentration of…

Q: In the photographic developing process, silver bromide is dissolved by adding sodium thiosulfate.…

A:

Q: You need to make a stock solution ofMg(HCO3)2 with a concentration of 5.50 M. You have a 750.0 mL…

A: Number of moles of solute present in 1 liter of solution is known as molarity of the solution.…

Q: A student makes a solution by dissolving 10.095g of Ca(NO3)2 (MM=164.09 g/mol) in 300 mL of water…

A: Given 10.095g of Ca(NO3)2 (MM=164.09 g/mol) in 300 mL of water  Molarity is to be determine Diluted…

Q: A student weighs out a 16.7 g sample of Ba(CH3COO)2 , transfers it to a 300. mL volumetric flask,…

A: Molarity (M) can be defined as the moles of solute that can be dissolved per litre of solution. It…

Q: When 4.36 g of sodium hydroxide are added to 125 mL of 3.80 ×10−1 M HCl, what is the concentration,…

A:

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.