The presence of soluble chromium compounds in wastewater is of great environmental concern. As part of an investigation to remove the metal, a laboratory technician adds 150.00 mL of 1.75 M Cr(NO3)3 to 70.00 mL of 1.41 M K2S, resulting in a precipitate of Cr2S3. The concentrations of Cr3+ in solution after the reaction is completed is?

Q: Consider the reaction when you mixed a solution of Ni(NO3)2 with a solution of Na3PO4 together. a.…

A: After filtering the Ni3(PO4)2, the color of the filtrate will be light green indicating the presence…

Q: Use the References to access important values if needed for this question. How many grams of Ag,CO3…

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A: moles of AgCl = ( mass / molar mass of AgCl )  moles of AgCl = ( 0.9805g / 143.32gmol-1 )  moles of…

Q: Mixtures of CaCl₂ and NaCl are used to melt ice on roads.A dissolved 1.9348-g sample of such a…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: How many grams of Ag2CO3 will precipitate when excess K2CO3 solution is added to 49.0 mL of 0.598 M…

A: Given;

Q: A 0.2417g sample of a compound composed of C,H,O,Cl only, is burned in oxygen yielding 0.4964g of…

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Q: A sample of 0.7960 g of an unknown compound containing barium ions (Ba5 is dissolved in water and…

A: The given compound is BaSO4. The molar mass of BaSO4 = Molar mass of Barium + Molar mass of Sulphur…

Q: A 1.000 g sample of an aluminum is dissolved, and the sulfate precipitated as BaSO4. The precipitate…

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Q: Upon heating, 48.6 mL of water was evaporated from 180. mL of 0.302 M C6H12O6(aq). What is the…

A: Given that,concentration of C6H12O6 = 0.302 M = 0.302 mol/Lvolume of the solution = 180 mL = 0.18…

Q: A 2.5624-g sample of a pure solid alkali metal chloride is dissolved in water and treated with…

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Q: A 0.5382 g sample containing sodium bicarbonate was dissolved and titrated with standard 0.1263 M…

A: Here acid base neutralization reaction will takes place in which one equivalent of HCl required for…

Q: How many grams of Ag,CO3 will precipitate when excess (NH4)½CO3 solution is added to 57.0 mL of…

A: Given  Molarity of AgNO3  =  0.561 M                                  = 0.561 mol/L  Volume = 57  mL…

Q: write the balanced complete ionic equation for the reaction when aqueous NiCl2 and aqueous Na2S are…

A: Interpretation: The balanced complete ionic equation for the reaction when aqueous NiCl2 and aqueous…

Q: 1.000 g sample of an aluminum is dissolved, and the sulfate precipitated as BaSO4. The precipitate…

A: Mass of aluminum or sample containing K2Al2(SO4)3*24H2O initially taken = 1.000 g  All of the…

Q: A student wishes to determine  the mass percentage of barium in a 2.016g  sample. The student…

A: Given : Molarity of H2SO4 = 0.20M Volume of H2SO4 = 20mL

Q: 1.000 g sample of an aluminum is dissolved and the sulfate precipitated as BaSO4. The precipitate…

A: Given data, Mass of sample = 1.0g Mass of precipitate (BaSO4) = 0.3486g Molar mass of BaSO4 =…

Q: The mass percentage of chloride ion in a 25.00-ml sample of seawater was determined by titrating the…

A: The balanced reaction for the formation of silver chloride precipitate from silver nitrate can be…

Q: I) A sample is analyzed for its tin content by an oxidation-reduction titration with Is (aq). A…

A: The number of moles of a solution can be calculated from its molarity and volume of the solution.…

Q: Fe(ll) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the…

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Q: The balanced equation for the reaction of aqueous Pb(CIO,), with aqueous Nal is Pb(CIO,),(aq) + 2…

A: Molarity of NaI = 0.180M Volume of NaI solution = 0.200L Molarity = moles÷volume  Moles of NaI =…

Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: The reactions involved are: Cl2+H2O⇒HOCl + HClCl2+D2O⇒DOCl + DCl

Q: A 0.5086 g solid sample containing a mixture of LaCl, (molar mass = 245.26 g/mol) and Ce(NO,),…

A: Precipitation reactions: These are the example of double displacement reaction. In these reactions,…

Q: Explain why the solid precipitate Agl (s) forms when solutions of KCl (aq) and AgNO3 (aq) are mixed

A: The ionic compounds dissociate completely into ions in an aqueous solution. The oppositely charged…

Q: Ammonia (NH,, MM 17.031 g/mol) and hypobromite (OBr") react according to the following chemical…

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Q: A 6.03 g sample of a mixture containing Fe, Pb and Ba) was dissolved in nitric acid (HNO3).  The…

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Q: An iron ore was analyzed by dissolving a 2.9912-g sample in concentrated HCI. The resulting solution…

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Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

A: The reaction of aqueous solutions of NaCl with PbNO32gives the precipitate PbCl2and aqueous solution…

Q: An iron ore was anulyzed by dissolving a 1.1324-g sample in concentrated HCI. The resulting solution…

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Q: A solution of NaCI(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

A: First we find the moles of PbCl2 , from the moles of PbCl2 and using the Balanced chemical equation…

Q: How many grams of pure Na2CO3 must be weighed and dissolved in a solution, if you are to prepare a…

A: Given-> Normality of HCl = 0.1478 N Volume of HCl = 61.75 ml Molecular weight of Na2CO3 = 106…

Q: Write a net ionic equation for the reaction that occurs when barium sulfite (s) and excess nitric…

A: The net ionic equation is written when the ions participating in the reaction are written. The…

Q: An iron containing sample of mass 0.53 g is first treated with HCI(aq) to convert all iron to Fe*…

A: The ratio of mass of particular atom to the total mass multiply by 100 is known as percent by mass.

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

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Q: Write the complete, balanced reaction that occurs when manganese (II) nitrate is mixed with sodium…

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Q: A sample weighing 0.2500g contains chloride ions, which precipitate as silver chloride. The formed…

A: We have to predict the Percentage concentration of chloride in the sample.

Q: A 1.248-g sample of limestone rock is pulverized and thentreated with 30.00 mL of 1.035 M HCl…

A: Given: Mass of limestone rock= 1.248 g Molarity of HCl= 1.035 M Volume of HCl= 30.00 mL Molarity of…

Q: Aqueous solutions of water-soluble AgNO3 and Fel, are mixed, forming a dark-yellow precipitate. a.…

A: During the reaction  following Product is formed   a)  Dark yellow precipate of AgI is obtained .

Q: Consider a 1.00 g sample containing 75% potassium sulfate (MW=174.25 g/mol) and 25%  MSO4. The…

A: The molar masses are -  K2SO4=174.26 g/molBaSO4=233.4 g/mol

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

A: Explanation Molarity (M): The number of moles of solute dissolved in one litre (L) of the solution…

Q: A 0.8571 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

A: The mass of the iron ore sample is = 0.8571 g The mass of iron(III) oxide is = 0.1132 g The molar…

Q: Jack was asked to determine iron (55.845 g/mol) content in dietary supplement. He took few random…

A: The question is based on the concept of quantitative analysis. We will determine percentage iron…

Q: 7/ A 0.8040-g sample of an iron ore was dissolved in acid. The iron was then reduced to Fe* and…

A: Initially from the given balanced equation  Mole ratio is found and then moles of Fe and Fe2O3 are…

Q: he presence of soluble chromium compounds in wastewater is of great environmental concern. As part…

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Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: Reactions involved are-Cl2+H2O→HOCl+HClCl2+D2O→DOCl+DCl Given, The HCl and DCl  were then…

Q: The balanced equation for the reaction of aqueous Pb(ClO,), with aqueous NaI is Pb(CIO,),(aq) + 2…

A: Given: Pb(ClO3)2 (aq) + 2 NaI (aq) ------> PbI2 (s) + 2 NaClO3 (aq) Volume of Pb(ClO3)2 = 1.50 L…

Q: The accompanying photo shows the reaction between asolution of Cd(NO3)2 and one of Na2S. (a) What is…

A: The ionic equation is the chemical equation in which the ions of the molecules are represented as…

Q: A 1.362 g sample of an iron ore that contained FezOawas dissolved in acid and all of the iron was…

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