A 3.859 g sample containing impure CuCl2· 2 H20 was heated to constant mass. The sample mass after heating to drive off the water was 3.161 g. What was the mass percent of CuCl2· 2 H2O in the original sample?

Q: Iodine is prepared both in the laboratory and commercially by adding Cl, (g) to an aqueous solution…

A: The given reaction is : 2NaI(aq) + Cl2(g)→I2(g) +2NaCl(aq) Mass of I2 produced = 23.6 g

Q: 100 mL 0.25 M NH4OH, 4 g Ca(NO3)2·4H2O, and/or 3 g (NH4)2HPO4.Determine the mass or volume of each…

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Q: What is the theoretical yield of MgO from the combustion of 5.25 x 10^23 atoms of Mg and 4.69 x…

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Q: If 64.0 mL of 0.150 M HCl(aq) is needed to neutralize all the NH3(g) from a 2.25 g sample of organic…

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Q: Many fertilizers contain ammonium phosphate as a source of phosphorus and nitrogen. A 8.22 g sample…

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Q: What is the maximum mass of iron, in grams, that can be obtained from 651 g of iron(III) oxide?

A: Molar mass of any substance is the mass of 1 mole of that substance. If the molar mass of an atom is…

Q: The molar mass of M(OH)2 formed by the hypothetical metal M, is 144.096 g/mol what is the molar mass…

A: Molar mass of a compound is equal to the sum of the molar masses of all the elements. The molar mass…

Q: You have 150.0 mL of a 0.693 M solution of Ce(NO3)a. What mass (in grams) of Ce(NO3)4 Would be…

A: Moles of Ce(NO3)4 = Molarity  x  volume in liters                                    = 0.693  x…

Q: Table salt, NaCl(s),NaCl(s), and sugar, C12H22O11(s),C12H22O11(s), are accidentally mixed. A 5.50…

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Q: If 0.276 grams of acetic acid (MM = 60.05 g/mol) are present in your 2.00 mL sample of vinegar, what…

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Q: A large neon sign is to be filled with a mixture of gases containing 8.662 g Ne, 2.44g Xe and 3.11 g…

A: Percentage by mass of an element in a compound can be expressed as the ratio of mass of the element…

Q: Cr203. What mass (in grams) of Cr203 is produced if 0.147 g of chromium metal is converted…

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Q: Consider the reaction: P4(s) + 6Cl₂(g) → 4PC13 (1) Given an initial mass of 15.75 g P4, an excess of…

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Q: 2. Silver is often extracted from ores such as K[Ag(CN)₂] and then recovered by the reaction…

A: This can be solved using the concept of stoichiometry with unitry method as shown.

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: A 4.23 g4.23 g sample of a laboratory solution contains 1.96 g1.96 g of acid. What is the…

A: Mass percent = (mass of acid/ total mass) ×100% Mass percent is defined as the ratio of mass of…

Q: lodine is prepared both in the laboratory and commercially by adding Cl, (g) to an aqueous solution…

A: The balanced reaction taking place is given as, => 2 NaI (aq) + Cl2 (g) -------> I2 (s) + 2…

Q: Nitrogen monoxide (NO), alongside water vapor, can be formed from the reaction between ammonia and…

A: In a chemical reaction, the amount of product formed depends on the amount of reactant that takes…

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

A: In order to evaluate concentration of any particular element available in a certain substance, the…

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 = ?

Q: If 2.332 g of a sample containing a mixture of CuO and CuCO3 are heated, the final weight of the…

A: CuCO3 on heating decomposes to form CuO and CO2 CuCO3 (s) →heat CuO (s) + CO2 (g) 123.55 g…

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: Given: Weight of impure sample of limestone =4.138 g Weight of CO2 = 1.49 g We know that molar mass…

Q: Calculate the mass of silver nitrate, AgNO3 (aq) that must react with solid copper to provide 47.5g…

A: Given : Cu(s) + 2AgNO3(aq)  ---> 2Ag(s) + Cu(NO3)2(aq)  Amount of Cu(NO3)2 produced = 47.5 g  To…

Q: What is the molarity of the solution resulting from dissolving 35.0 g of silver nitrate in enough…

A: Given: mass of silver nitrate = 35.0 g Volume of solution = 169 mL = 0.169 L molar mass of silver…

Q: For the synthesis of boric acid; 7.94 g of anhydrous borax was taken and 15 mL of water was added…

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Q: When a sample of acetic acid (vinegar) is burned, it can be determined that it has a mass percentage…

A: Given: Mass percentage of  Carbon =39.9%  Mass percentage of  Hydrogen =6.72%  Mass percentage of…

Q: Calculate the mass percent of 0.389 g of silicon (Si) that reacts with oxygen to form 0.832 g…

A: Given that:  Si = 0.389g and SiO2 = 0.832 g…

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: The mass of the sample of limestone is = 2.631 g The mass of carbon dioxide gas produced by the…

Q: 410.0 mL of a 4.8 mol/L silver nitrate (AgNO 3 ) a reaction flask. Calculate the mass in kilograms…

A: Given Mass of silver nitrate =m g  Molar mass of silver nitrate = 169.87 g/mol Moles = Mass ÷  Molar…

Q: 1.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

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Q: In one part of our experiment, we take 30.0 ml of 1 M HCI(aq) and react it with a magnesium metal…

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Q: Coke is an impure form of carbon that is often used in the industrial production of metals from…

A: Given: percentage of carbon by mass = 95% Mass of copper(II) oxide = 1.0 ton To find: The mass of…

Q: the mass percentage composition of the elements in caffeine, C8H10N4O2.

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Q: This equation models how pure silver (Ag) is extracted from ores of AgK(CN)2 (potassium…

A: The balanced chemical equation,  2AgK(CN)2(aq) + Zn(s) → 2Ag(s) + Zn(CN)2(aq) + 2KCN(aq) Given,…

Q: Calculate the mass % of the limiting reactant BaCl2 in a salt mixture of mass 1.08 g, knowing that…

A: The ratio of mass of solute to the total mass of solution multiply by 100 is known as percent by…

Q: Iodine is prepared both in the laboratory and commercially by adding Cl, (g) to an aqueous solution…

A: From the given reaction,

Q: P4(s) + 6Cl2(g) → 4PCl3(l) Given an initial mass of 19.14 g P4, an excess of Cl2, and assuming that…

A: Given-> Weight of P4 = 19.14 gm

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

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

Q: The aluminum in a 0.685 g sample of an unknown material was precipitated as aluminum hydroxide,…

A: Mass percentage of a component can be calculated by using the formula :  mass %ge of the component…

Q: A 0.772 g sample of a mixture containing only NaBr and CaBr2 is dissolved in water. An excess of an…

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Q: If 19.5 grams of an aqueous solution of magnesium sulfate, MgSO4, contains 1.71 grams of magnesium…

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Q: Table salt, NaCl(s), and sugar, C,,H„0(s), are accidentally mixed. A 5.50 g sample is burned, and…

A: Balanced Combustion reaction of sugar:  C12H22O11 + 12O2 .....> 12CO2 + 11H2O Mass of sample =…

Q: How many grams of KNO3 will be required to prepare 800 mL of 1.40 M KNO3?

A: Molarity = number of moles of solute/volume of solution (in L)  so, moles = molarity × volume (in L)…

Q: Suppose a student starts with 2.4185 g of a sand mixture and separates the components into 1.3012 g…

A: Mass percent of a component in the mixture can be calculated as the ratio of mass of component to…

Q: What is the mass percentage of C in CH,CH,OH?

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Q: A sample of a substance with the empirical formula XBr2 weighs 0.5000 g. When it is dissolved in…

A: Empirical formula of a compound simply represents the simplest ratio of atoms in a compound.…

Q: In an analysis, you need enough product to weigh accurately. If a tablet sample contains…

A: Number of mol = Mass/molar mass Mass of Fe in one tablet = 15 mg Mass of Fe2O3 = 0.25 g Molar mass…

Q: Nitrogen monoxide (NO), alongside water vapor, can be formed from the reaction between ammonia and…

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Q: A mixture of butene, C4H8, and butane, C4H10, is burned in air to give CO2 and water. Suppose you…

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