The aluminum in a 0.685 g sample of an unknown material was precipitated as aluminum hydroxide, Al(OH)3, which was then converted to Al2 03 by heating strongly. If 0.109 g of Al203 is obtained from the 0.685 g sample, what is the mass percent of aluminum in the sample?

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Q: Aluminum in an ore sample is determined by dissolving it and then precipitating with base as Al(OH)3…

A: Given, 0.2385 g of precipitate

Q: The aluminum in a 0.805 g sample of an unknown material was precipitated as aluminum hydroxide…

A: Given,Mass of Aluminum = 0.805gMass of Al2O3 = 0.127 g Molar mass of Al2O3 is 101.96g/molMolar mass…

Q: To a crucible and cover weighing 33.392 g is added a sample of a copper (II) chloride hydrate (CuCl2…

A: Given data, Mass of crucible + cover = 33.392g Mass of crucible + cover + sample = 34.405g Mass of…

Q: A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric…

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Q: If 7.85 g Ca(NO3)2 is dissolved in enough water to make 0.750 L of solution, what is the molar…

A: Mass of Ca(NO3)2 = 7.85 g Molar mass of Ca(NO3)2 = 164.09 g/mol Calculation of no. of mol of…

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Q: Apply In an experiment, you combine 83.77 g of iron with an excess of sulfurand then heat the…

A: Given : Mass of iron = 83.77 g Reaction equation is as follows. 2Fe(s) + 3S(s) → Fe2S3(s)

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

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Q: 4) A 11.31 g sample of a competitor's "SonicBloom" fertilizer is analyzed for its phosphorus content…

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Q: The aluminum in a 0.767 g sample of an unknown material was precipitated as aluminum hydroxide,…

A: given: mass of sample of unknown material =0.767 g mass of aluminium oxide produced = 0.143 g…

Q: The aluminum in a 0.755 g sample of an unknown material was precipitated as aluminum hydroxide,…

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Q: 9. If 92.8 g of sodium nitrite (NaNO2) are dissolved in 2.3 L of water, the resulting solution has a…

A: Given, Mass of NaNO2 = 92.8 g  Volume of Solution = 2.3 L  Molarity = ?

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A: The solution is given below -

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Q: If we mix together 100.0 grams of TiCl4 and an excess of H2, TiCl4 + 2 H2 → Ti + 4 HCl what is the…

A: The reaction given is  TiCl4 + 2 H2 → Ti + 4 HCl

Q: What mass in grams of iron metal can be formed by the reaction of 2.14 g Al metal

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Q: A silvery-white, lightweight malleable metal is used in a huge variety of products including cans,…

A: Given: Mass of Al2O3 reacted=8.25×105 g Mass of Carbon reacted=7.50×105 g Yield=35%

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Q: Enter your ansTwer in the provided box. One of the reactions that occurs in a blast furnace, in…

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Q: (iii) When 90.00 mL of 0.200 M MnO4¬(aq) was reacted with 200.00 mL of 0.280M H2O2(aq), the amount…

A: The complete balanced reaction for the question is : 2MnO4- + 3H2O2 →2MnO2 + 3O2 + 2OH- + 2H2O…

Q: A noncarbonated soft drink contains an unknown amount of citric acid, H3 C6H5 O7. If 100. mL of the…

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Q: a. In the laboratory you are given the task of separating Ca2+ and Pb2+ ions in aqueous solution.…

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Q: like many metals , aluminum reacts with a halogen to give a metal halide 2 Al(s) + 3 Br2(l) =…

A: 2Als      +       3Br2 l →…

Q: Mass of the filter paper, g 0.833 0.862 Mass of filter paper and precipitate, g 4.531 4564 Chemical…

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Q: A few antacids contain aluminum hydroxide, Al(OH)3 (molar mass= 78.00 g/mol). Aluminum hydroxide…

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Q: A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets…

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A: As per our guidelines, we are supposed to answer only one question. Kindly, repost other question as…

Q: If 2.952 g of copper(II) nitrate is reacted with sufficient sodium hydroxide, how much copper (II)…

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Q: N2(g)+3h2(g)=2nh3(g) what type of reaction is this?

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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".