A student precipitates 397.1 g lead (II) iodide (Pbl₂) in the reaction below. Upon careful calculation, the student determines obtaining a 84.0% yield. What was the theoretical yield of grams of lead (II) iodide (Pbl2) that should have been used? Pb(NO3)²(aq) + 2Kl(aq) → Pblz(s) + 2KNO³(aq) percent yield actual yield/ theoretical yield x 100

Q: A student was asked to predict what would take place when solutions of lead (II) perchlorate and…

A: In order to write net ionic equation we have to follow some steps

Q: The setting of Portland cement (used in sidewalks, for example) by reacting with water involves…

A:

Q: 2.00 g of limestone was dissolved in hydrochloric acid and all the calcium present in the sample was…

A: Given: The mass of limestone is 2.00 g. The weight of the precipitate is 2.43 g. To find: Percentage…

Q: In the reaction between KCl(aq) and AgNO3(aq), a precipitate of AgCl(s) will form. What mass (in…

A: Molarity of AgNO3 solution = 0.220 Volume of AgNO3 solution = 27.2*10-3 Molar mass of KCl= 74.55…

Q: The Burke Museum at the UW is analyzing a dinosaur bone sample for the amount of calcium it…

A: The solid

Q: Consider the following reaction: Pb(NO3)2(aq) + 2KI(aq)→ Pbl½(s) + 2KN03(aq) What mass of lead…

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Q: 0.402 Lof a 0.0671 M strontium hydroxide solution is mixed with an excess of lithium phosphate. What…

A:

Q: A student analyzes a sample of rock that contains the element calcium (Ca). In the student's…

A: Given that,182.2 mg of the rock produces 120.7 mg of CaC2O4 on treatment of Na2C2O4 We have to find…

Q: A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.200-g sample of…

A: Answer:The question is based on the concept of gravimetric analysis and Stoichiometric Calculations.…

Q: Concentration of calcium in a sample may be determined by precipitation using the chromate ion,…

A:

Q: Manganese commonly occurs in nature as a mineral. The extraction of manganese from the carbonite…

A:

Q: Manganese commonly occurs in nature as a mineral. The extraction of manganese from the carbonite…

A: First step :  2MnCO3(s) + O2(g) -------> 2MnO2(s) + 2CO2(g)  Second step :  3MnO2(s) + 4Al(s)…

Q: Manganese commonly occurs in nature as a mineral. The extraction of manganese from the carbonite…

A:

Q: Manganese commonly occurs in nature as a mineral. The extraction of manganese from the carbonite…

A: First reaction ; 2MnCO3(s) + O2(g)-->2MnO2 (s) + 2CO2(g)  Second reaction;  3MnO2(s)+4Al(s)…

Q: The balanced equation for the precipitation reaction between lead ion and potassium chloride is…

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Q: Concentration of calcium in a sample may be determined by precipitation using the chromate ion, Cro…

A:

Q: References A 3.41 g sample of iron ore is transformed to a solution of iron(II) sulfate, FeSO4. This…

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Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further…

A:

Q: Excess Na2SO4(aq) is added to a 2.43×102 mL sample of industrial waste containing Ba2+ ions. If 20.5…

A: Total industrial sample = 2.43 x 102 mLTotal mass of BaSO4 precipitated= 20.5gThe given reaction is

Q: When solutions of silver nitrate and magnesium chloride are mixed, silver chloride precipitates out…

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Q: reaction below and answer the questions that follow in the space provided. 3…

A: The question is based on the concept of Reaction Stoichiometry. We have to identify the limiting…

Q: A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 2.750-g sample of…

A: To find the mass of FeSO4·7H2O in the 2.750 g sample, we'll need to follow these steps:Calculate the…

Q: Two solutions were made, the first one was made by dissolving 2.27 g of Co(NO3)2 in 100.0 mL of…

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Q: A 15.0 mL solution of 0.900 M Pb(CH3COO)2 is mixed with 55.0 mL of 0.102 M NaCl. What is the…

A: Limiting reagent : " A reactant which is present in lesser amount than required as per balanced…

Q: The following molecular equation represents the reaction that occurs when aqueous solutions of…

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Q: Mining companies use this reaction to obtain iron from iron ore: Fe₂O3(s) + 3 CO(g) → 2 Fe(s) + 3…

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Q: A solution of NaCl (aq) is added slowly to a solution of lead nitrate, Pb(NO3)2 (aq) until no…

A: NaCl is being added in the Pb(NO3)2 till no further precipitate is formed. Hence all the Pb2+…

Q: A chemist carries out an experiment to determine the number of moles of Cl– ions in a 1 L sample of…

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Q: Excess Na2SO4(aq) is added to a 4.41×102 mL sample of industrial waste containing Ba2+ ions. If 55.5…

A: Molarity is a term used for concentration which shows the moles of solute dissolved per liters of…

Q: A student was asked to predict what would take place when solutions of lead (II) perchlorate and…

A: Given, lead (II) perchlorate = Pb(ClO4)2 (aq)  calcium iodide = CaI2

Q: ron(II) sulfide reacts with hydrochloric acid according to the reaction…

A: Limiting reactant :- A reactant which is present in lesser number of moles than required as per…

Q: Magnesium (used in the manufacture of light alloys) reacts with iron(III) chloride to form magnesium…

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Q: Excess Na2SO4(aq) is added to a 4.41×102 mL sample of industrial waste containing Ba2+ ions. If 55.5…

A:

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: What mass of precipitate (in g) is formed when 20.5 mL of 0.500 M Cu(NO₃)₂ reacts with 40.0 mL of…

A: Answer #70: The given reaction is :  Cu(NO3)2(aq) + 2 NaOH(aq) → Cu(OH)2(s) + 2 NaNO3(aq) The given…

Q: A student was asked to react silver nitrate with sodium during a stoichiometry lab. The student…

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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".