The hardness of water is usually expressed in parts per million by mass of CaCO3. What is the hardness of a water sample with a Ca2+ ion concentration of 1.7 X 10-3 M? Assume the density of water is 1.0g/mL

Q: 7. The hardness of water (hardness count) is usually expressed in parts per million (by mass) of…

A: Option (a) is the correct option. Answer is explained below. Ans: Molar concentration of Ca2+ ion in…

Q: of lead. A 50.0 g sample of SAE 15W-40 motor oil is sent for testing. It was found to contain 13.4…

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Q: 1. Commercial vinegar was titrated with NaOH solution to determine the content of acetic acid,…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: A 0.4334 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mL of 0.1180 M HCl were…

A: Option 4- 9.38%

Q: What is the formula of the acid formed when Cl20 reacts with water. O HCIO2 O HCIO O HCIOA O HCIO3

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Q: 2. Complete the following reactions: B. 2 Cu I THE H20, HCI

A: We have to complete the given reaction scheme. The required reaction scheme is shown below.

Q: A lab technician adds 0.15 mol of KOH to 1.00 L of 0.010 M Ca(NO3)2. Ksp=6.5×106 for Ca(OH)2. Which…

A: If the reaction quotient (Q) is less than the solubility product (Ksp), the solution is unsaturated…

Q: In the reaction Conc.H,SO, OH → P (Major) Pis

A: In reactions, rearrangement takes place to form more stable cation or to expand the ring.

Q: ppb

A: Total mass of peanuts received = 18t  = 18 × 1000 Kg (as 1t = 1000Kg)  = 18 × 103 Kg Here ppb stands…

Q: 13) 0.0972 g of CO, was dissolved in 100 g of water. Expressed in parts per million (ppm), this…

A: (13) The ppm formula is - ppm = (mass of Solute in g/mass of Solution in g)×106 ppm =…

Q: You dissolve 1.234g of Ni(NO3)2 powder into some water, poured this into 1.00L volumetric flask and…

A: Given, mass of Ni(NO3)2 = 1.234 g, Volume = 1 L, Absorbance = 2.345 x molarlity

Q: what is the net ionic eguation. Naz Co3 + 2HCI 2Nacl + COz +H2O to

A: Balance chemical equation is defined as which has equal number of atoms or ions in both sides…

Q: The copper(II) ion reacts with phosphate ion to form an insoluble ionic compound, Ksp = 1.40×10-37.…

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Q: 4. K;Cr20, + KI + H;PO4 5. K,Cr,O, + FeSO, + H,SO, I2 + CrPO, + KPO4 + H;0 Cr;(SO,); + Fe,(SO,); +…

A: A balanced chemical reaction is that in which the left-hand side contains an equal number of atoms…

Q: 33. 0.2347 g of an ionic compound MX (135.32 g/mol) completely dissociates into its corresponding…

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Q: The concentration of PO43 ions in (M) found in a solution of 3 M H3PO4 is (Ka1= 7.1X103, K22=…

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Q: n the titration of 10.00 mL sample of vinegar solution with 0.35 M NaOH as titrant, the initial…

A: The question is based on the quantitative analysis. we have to calculate percentage acid present in…

Q: What type of reaction is this? 2 Melz + Mn(SOs2 --> 2 MgSO, + Mnla What type of reaction is this?…

A: A chemical reaction can be defined as a process in which one or more substances  called reactants…

Q: Volume of liquid bleach titrated = 5 ml %3D Molarity of Na2S2O3= 0.1 M Volume of Na,S,O3 added = 16…

A: By using Molecular formula of bleach and calculating no. Of moles of Na2S2O3 , we can find no. Of…

Q: Following the net ionic equation of the reaction: Na + Feso4 - NazsO4 + Fe How should its Keq be…

A: ->Na(s) + FeSO4(aq) ----> Na2SO4(aq) + Fe(s) ->when one specie get oxidized and other get…

Q: How much Na2SO4 is required to precipitate 2.50g of Ba(NO3)2 in the form of BaS04? AW: Ba = 137.33,…

A: 1 mole = 6.022×1023 [Avogadro's number ] The mass of 1 mole of a substance is known as molar mass…

Q: 8. To make up a solution of phosphate buffered saline (PBS), you need 15 mM Na2HPO4 (anhydrous) (FW:…

A: Mass of Na2HPO4 required for 1000 mL solution = 15 × 141.96 mg…

Q: The Borax solution (Na2B4O7) was standardized by titrating 20.00 mL of sample with 1.044 M solution…

A: Given : Concentration of H2SO4  1.044 M Volume of Na2B4O7 solution = 20.00 mL And volume of H2SO4…

Q: If a 1.2 x 103 mol of Pblz dissolves in 1.0 L of water at 25 degrees Celsius to reach saturation…

A: Given;

Q: In the titration of 10.00 mL sample of vinegar solution with 0.35 M NAOH as titrant, the initial…

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Q: a sample of solid Ca(OH)2 is stirred in water at 30 C until the solution contains as much dissolved…

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Q: 8. What mass of Potassium carbonate is needed to prepare 200. mL of a solution having a potassium…

A: The Molarity formula is given as, MolarityM=Given weightMolar mass×VolumemL×1000 where, Moles=Given…

Q: Concentration of NaOH = Volume of HCL x The concentration of HCL/Volume Of NaOH Concentration of…

A: A numerical problem based on quantitative analysis, which is to be accomplished.

Q: in the equation Potassium Chloride and Copper sulfate KCL + CuSO4 -> K2SO4 + CuCl2cc what does K=…

A: In a chemical equation, the reactant molecules are combined together to form the products. The…

Q: Bromine water is a solution of the element bromine in water. It can be made by dissolving a sample…

A:

Q: K eq for the following Write the formula for the reaction: 2NH, () +3H28) N26) 3 (g) edio

A: Keq is the equillibrium constant.  It gives the relation between concentration of product and…

Q: 2.4414 g sample containing KCI, K,SO, and inert materials was dissolved in sufficient water to give…

A: Hi there! Since you have posted multiple questions, we will answer the first question for you.

Q: A 0.8780 g sample containing only NaCl and KCl was treated with AgNO3. The AgCl formed had a mass of…

A: Given that -  Mass of sample containing NaCl and KCl = 0.8780 g  Mass of AgCl = 1.913 g  Also atomic…

Q: Magnesium sulfate

A: In this question we want to know about Qualitative and Quantitative Analysis of Magnesium Sulpfate.

Q: Exactly 0.2220 g of pure NazCO; was dissolved in 100.0 mL of 0.0731 M HCI. What mass in grams of CO2…

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: 194.3 grams of barium fluoride are weighed out and placed into a 7.82 L volumetric flask and the…

A: Ksp solubility product : when a chemical compound in solid state is in equilibrium with the solution…

Q: In a laboratory activity, Ca(OH)216) is completely dissolved in distilled water. This solution is…

A: Ca(OH)2 is a strong base HCl is a strong acid. So, Neutralization reaction between Ca(OH)2 and HCl…

Q: A 500 mL sample of waste water contains 15.72 ug of mercury, Hg. If the density of the sample is…

A: The volume of the wastewater sample is = 500 mL The amount of mercury in this sample is = 15.72…

Q: The calcium from a sample of limestone weighing 607.4 mg  was precipitated as CaC2O4 (128.10 g/mol)…

A: The mass of the limestone sample is = 607.4 mg The mass of CaCO3 formed by ignition is = 246.7 mg…

Q: In the laboratory you are given the task of separating Ca and Fe2+ ions in aqueous solution. For…

A: Separation of Ca2+ and Fe2+ ions in aqueous solution .Reagents used for separation : KCl, K2SO4…

Q: Why does adding a salt solution cause soap to precipitate?

A: Sodium salt of higher carboxylic acid is known as soap and has general formula RCOO–Na+.

Q: A sample barium halide (Bax2 2H20) weighing 0.3567 g was precipitated as BasO4. Determine the…

A: Mass of BaSO4 = 0.3732 g  Mass of reactant BaX2 .2H2O = 0.3567 g We need to determine X.

Q: What mass of Ba(IO3)2 (487 g/mol) can be dissolved in 1 L of water at 25°C? Ba(IO3)2 = Ba2+ + 2 IO3…

A: Ksp is the product of concentration of ions of sparingly soluble salt.

Q: The Borax solution (Na2B4O7) was standardized by titrating 20.00 mL of sample with 1.044 M solution…

A:

Q: In the titration of 10.00 mL sample of vinegar solution with 0.35 M NaOH as titrant, the initial…

A: Given: The volume of the vinegar solution taken for titration = 10.00 mL Molarity of the NaOH…

Q: Potassium hydrogen phthalate, C8H5KO4 (molar mass 204.22 g mol-1) is a widely used standard for…

A:

Q: 20.46 mL of the I2 solution from above is required to titrate a sample containing As2O3. Calculate…

A: Given,  As2O3 + 5(H2O) + 2I2 → 2(H3AsO4) + 4HI   We know,  At STP 1 mol = 22.4 L  According to the…

Q: In the titration of 10.00 mL sample of vinegar solution with 0.35 M NaOH as titrant, the initial…

A:

Q: A sample of KHP, KHC8H&O4, weighing 2.035 g is titrated with NaOH and backtitrated with HCI. NaOH…

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