The aluminum in a 1.200g sample of impure ammonium aluminum sulfate was precipitated with aqueous ammonia as the hydrous Al2O3 · XH2O. The precipitate was filtered and ignited at 100°C to give anhydrous Al2O3, which weighed 0.2001 g. Express the result of this analysis in terms of % Al.

Q: The aluminum in 0.200 g impure aluminum sulfate ( the sample) was precipitated with aqueous NH3and…

A: Since the weight of aluminum obtained form impure aluminum sulfate is 0.15 g. Molar mass of aluminum…

Q: Twenty tablets of an iron food supplement whose total mass was 22.131 g were crushed and perfectly…

A: Answer: This question is based on the relation between mass, molar mass and number of moles and by…

Q: The phosphorus in a 0.2222-g sample was precipitated as the slightly soluble (NH4)3PO4 • 12Mo O3.…

A: P2O5 = 2 (NH4)3PO4 • 12Mo O3 = 24 PbMoO4   Moles of PbMoO4 are, Moles = mass ÷ molar mass Moles =…

Q: The arsenic in a 1.209-g sample of a pesticide was converted to H3 AsO4 by suitable treatment. The…

A: Here we are required to find the percentage of arsenic oxide in sample.

Q: A sample of ultrapure silicon was reacted with excess oxidizing yielding SiO₂. After proper…

A: Given that -  Mass of Silicon dioxide SiO2 =  3.1754 g  Percentage of ultrapure silicon = 99.98%…

Q: When 250.0 mL of .2500 M Li2CO3 (aq) were mixed with 350.00 mL of .1500M AlBr3 (aq), 2.500 grams of…

A: Molarity of Li2CO3 = 0.2500 M Volume of Li2CO3 = 250 mL = 0.250 L Molarity of AlBr3 = 0.1500 M…

Q: a) b) Br OH OH NHPh CI OH +E

A: The question is based on the concept of organic synthesis.We need to synthesize the product using…

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: The arsenic in a 1.223-g sample of a pesticide was converted to H3AsO4 by suitable treatment. The…

A:

Q: The equation for the reaction between sodium hydrogen carbonate and sulfuric acid at room…

A:

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

A: Mass of the sample 1 = 0.2417 gAtoms present in compound = C, H, O, ClMass of CO2 obtained = 0.4964…

Q: Calculate the initial ferric ion concentration, [Fe*]o, in the reaction mixture obtained by…

A: Given: Volume of Fe3+ = 2.00 mL Concentration of Fe3+ = 0.00218 M Volume of SCN- = 500μL = 0.5 mL…

Q: A small iron pan was analyzed by dissolving a 11.1321 g sample in HCl. The resulting solution was…

A: Given, mass of Fe3O4 = 5.1231 g molar mass of Fe3O4 = 231.533 g/mol !! Calculate the moles of Fe3O4…

Q: A 13.2010g sample of hydrated zinc sulfate, ZnSO4 • xH2O), was strongly heated until no further…

A: For the reaction., ZnSO4 • xH2O ----> ZnSO4 + xH2O  Given Mass of ZnSO4 • xH2O = 13.2010 g Mass…

Q: 2. What is the gravimetric factor (a) For acquiring the weight of Ag:CrO, from the weight of AgCI?…

A: The analytical method that is employed for the quantitative determination of unknown substances in…

Q: A0.4334 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mL of 0.1180 M HCl were…

A:

Q: if I were to separate Bi3+ and Co2+, can I do that by adding H2S? So that Bi3+ would precipitate?…

A: Bi3+ is the second group basic radical whereas Co2+ belong to the fourth group.  For the sepration…

Q: 2. The arsenic in a 1.203-g sample of a pesticide was converted to H3ASO4 by suitable treatment. The…

A: Given that,Weight of pesticide = 1.203gVolume of  = 40 mLMolarity of = 0.05871 MVolume of  = 9.63…

Q: Use your balanced chemical reaction from the above problem.   How many kilograms of the barium…

A: Given,  Ba(NO3)2 + K2SO4 ---> BaSO4 + 2KNO3 Mass of Ba(NO3) = 675.00 pounds.  The mass of barium…

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

A:

Q: If 20.0 g of LiOH is added to 0.750 L of 1.00 M Cd(NO₃)₂, how many grams of precipitate will be…

A: The balanced equation for this precipitation reaction is: Cd(NO3)2 + 2LiOH → Cd(OH)2 + 2LiNO3 The…

Q: OH (d) CN

A: The compound has one carbonyl and one ester groups are present . Now to reduce the ester group…

Q: A sample weighing 3.056 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al, 0, (molar mass…

A:

Q: 31.  10.0 mL. of concentrated of H3PO4(aq) is diluted to the final volume of 250.0 mL.  Then 15.0…

A: Given that : The initial volume of H3PO4 = 10.0 mL The final volume of H3PO4 = 250.0 mL Molarity of…

Q: A 0.750 g sample of finely ground limestone was placed in an Erlenmeyer flask, and 25.00 mL of 1.00…

A: Mass of sample = 0.750 grams Volume of HCl added = 25.0 mL Concentration of HCl added = 1M Volume of…

Q: on, and then titrated with pre. n't need to know the formula

A: Calculation of mass percentage of iron. Mass of iron = 55.845g/mol.

Q: The percentage of protein in most food products is found arbitrarily by multiplying the percentage…

A: One of most important element that is present in protein is nitrogen. In the food product, the…

Q: When 38.0 mL of 0.1250 M H2SO4 is added to 100. mL of a solution of PbBr2, a precipitate of PbSO4…

A: Mass of PbSO4 = 0.0471 g Molar mass of PbSO4 =303.28 g/mol Volume of PbBr2 = 100 mL

Q: In one gravimetric analysis, the iron (Fe) in a 1.6374 g of impure iron compound was dissolved with…

A:

Q: The concentration of KClO3 in the explosive sample can be determined by reaction with Fe(II): ClO3-…

A: The chemical reaction between KClO3 and Fe2+ is represented as follows:…

Q: 3-5.00 grams of potassium carbonate and 5.00 grams sodium carbonate were treated separately with…

A: Given data isMass of potassium carbonate = 5.00 grams mass of potassium carbonate = 5.00 grams

Q: The Fe2+ (55.845 g/mol) content of a 2.433 g steel sample dissolved in 50.00 mL of an acidic…

A:

Q: A 0.51960.5196 g solid sample containing a mixture of LaCl3LaCl3 (molar mass = 245.26 g/mol) and…

A: The reactions of LaCl3 & Ce(NO3)3 with KIO3 are represented as follows: LaCl3 +3 KIO3  →…

Q: The concentration of SO42– ions in a 45.0 mL sample of seawater is determined by adding a solution…

A: Given information: Mass of barium sulfate = 0.315 g Volume of sample = 45.0 mL or 0.045 L

Q: 1. (a) The solubility product of a sparingly soluble salt, XF2, was determined by titration and…

A: General titration equation is  M1V1=M2V2  M-> MolarityV->Volume in this question the titre is…

Q: 185 mL sample of 1.20 M Pb(NO₃)₂ is mixed with 61.5 mL of 1.50 M NaCl, and the PbCl₂ precipitate is…

A: Lead nitrate reacts with sodium chloride to form lead chloride and sodium nitrate. Write the…

Q: using phenolphthalein as indicator. The titration was repeated several times and the mean titre was…

A:

Q: A 0.7041-g sample of impure mercury(II) oxide was dissolved in an unmeasured excess of potassium…

A: Answer:- This question is answered by using the simple concept of of mass percentage using the…

Q: A 6.586-g sample containing magnesium chloride and sodium chloride was dissolved in sufficient water…

A: Mass of sample = 6.586 g Mass of sample solution = 500 mL Mass of AgCl formed from 50 mL solution =…

Q: _Fe2O3 (s) + H,O (1) Fe(ОН); (s) е.

A: Balanced equation means number of atom in reactant side is equal to number of atom in product side.…

Q: You wish to quantify the amount of silver in 25.0 mL of a silver nitrate solution. You perform a…

A: The precipitate formed in the reaction is Ag2SO4(s).  Since Ag2SO4(s) is in equilibrium with the…

Q: A 1.560 g sample of metal ore was dissolved and the metal (Fw=48.12g/mol) was oxidized to a metal…

A:

Q: Potassium dichromate has several industrial applications. To determine the purity of the salt that…

A: KI or I-(aq) reduces potassium dichromate, K2Cr2O7 to Cr3+(aq) and itself gets oxidized to I2. The…

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".