A 100 mg sample of Epsomite (MgSO4·7H2O) was heated in a crucible. After cooling to room temperature, the mass of the resulting white, anhydrous salt (MgSO4) was measured to be 49 mg. Given this data, calculate the mass percent of water in the hydrate and show calculations that confirm the empirical formula ratio of 1 MgSO4:7H2O.

Q: Silicon reacts with sulfur at elevated temperatures. If 0.0923 g of silicon reacts with sulfur to…

A:

Q: 8.) Considering the equation 2 NaI (ao) + Cl₂(g) → 1₂ (s) + 2 NOCI (aa) How many grams of Sodium be…

A: 2 NaI (aq) + Cl2(g) ==> I2(s) + 2NaCl (aq)  Given Mass of Iodine = 49.5 g  Molar mass of Iodine =…

Q: An alloy of iron and carbon was treated with sulfuric acid, in which only iron reacts. 2 Fe(s)+3 H 2…

A: % of Fe in alloy = weight of Fe /weight of alloy x 100

Q: Calculate the mass in grams of a sample of NO2 that contains 1.000 x 10^25 molecules.

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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: Barium chloride dihydrate has the formula BaCl2  ·  2H2O. Assume there is another hydrate (BaCl2…

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Q: (a) A compound MX2 is formed from the M²+ and X ions. The compound contains 86.8% of X by mass. In a…

A: a) Given that,molecular formula of the given =  MX2 The percentage of X in the compound= 86.8% In a…

Q: From silver nitrate (A9NO3) solution prepared by dissolving 1.26 g of salt in a 250 ml volumetric…

A: Mass of Silver Nitrate = 1.26g Volume of solution = 250 mL Molar mass of AgNO3 = 169.9g/mol Molarity…

Q: Turquoise, CuAl 6 ( P O 4 ) 4 ( OH) 8·5 H 2 O(s), is one of the most valuable non-transparent…

A: Calculate molar mass of both hydrated and anhydrous form of the mineral and then calculate the mass…

Q: Certain kinds of zeolite have the general formula M2O·Al¿O3'ySiO2'wH2O, where M is an alkali metal…

A: Concept introduction: Zeolites are the compound having hydrated form of aluminosilicate. Mass% is…

Q: The following reaction is known to have a 65.0% yield of copper. 3 Cu(NO3)2(aq) + 2 Fe à 2…

A: We have given that 3 Cu(NO3)2(aq) + 2 Fe(s) → 2 Fe(NO3)2(aq) + 3 Cu(s) and the reaction yield 65%…

Q: Determine the mass percent of anhydrous sodiumcarbonate (N a 2 C O 3 ) and water in sodium…

A: Given   Anhydrous sodium carbonate : Na2CO3  Sodium carbonate decahydrate: Na2CO3 ·10 H2O…

Q: Is the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?

A: The copper sulfate penthydrate dehydrates to form the clear, anhydrous copper sulfate.

Q: A 6.7283 g sample of a hydrate of MgSO4 was heated to drive off all of the water of hydration. The…

A: The first step is to calculate the mass of water that was lost when the hydrate was heated. This can…

Q: A sample of NaCr(SO₂)₂.10H₂O was heated in a crucible, yielding 1.27 g of the corresponding…

A: The molar mass of NaCr(SO4)2 is = 267 g/mol The molar mass of H2O is = 18.0 g The mass of NaCr(SO4)2…

Q: How many moles and grams of nitric acid, HNO3 (aq), are there in 200.0 mL of 2.00 M HNO3 (aq)?

A:

Q: Let's say you are working in a laboratory with a group and you are the only student who has taken…

A: According to given information, Mass of unknown hydrate CoCl2. XH2O = 33.92 g - 32.27 g = 1.65  g…

Q: What does n= if, 3.764 g CuSO4 · nH2O yields 1.585 g of anhydrous Cu(OH)2 after treatment with…

A:

Q: Starting with the following equation, Fe₃O₄(s) + CO(g) → Fe(l) + CO₂(g) calculate the mass in grams…

A: Weight of Fe = 575 gm

Q: A sample of nickel silver contains 18.0% nickel by mass. What mass of nickel silver must be melted…

A: Given: Sample of Nickel Silver contains: 18% Nickel by mass.

Q: What is the weight of lead nitrate Pb(NO3)2 (molecular weight = 331 g/mol) that %3D must be…

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Q: Calculate the mass (in grams) of 8.336 x 10^16 molecules of Ca5(PO4)3(OH) (Hydroxyapatite)

A: We have been given 8.336 x 1016 molecules of hydroxyapatite.and we have been asked to calculate the…

Q: Elemental phosphorus can be prepared from calcium phosphate via the overall reaction2 Ca3(PO4)2 + 6…

A: The reaction considered is,

Q: Madagascar is one of the most important gem-producing countries. three tonnes of Madagascar rock…

A: In order to solve this question, we will be using basic mole concepts. Also, since you have asked…

Q: Asprin (C9H8O4) is prepared by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3). (a)…

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Q: Ammonium dihydrogen phosphate, formed from the reaction of phosphoric acid with ammonia, is used as…

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Q: Calculate the percentage composition for PCI3. Mass percentage of phosphorus = Mass percentage of…

A: Formula : PCl5 Molar mass of P = 31 g/mol Molar mass of Cl = 35.5g/mol  Molar mass of PCl5 = P +…

Q: 2.43 g sample of MgSO4 hydrate (MgSO4 · x H2O) is heated and 1.19 g of anhydrous MgSO4 remains.…

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Q: Iodine is prepared both in the laboratory and commercially by adding CI2 (g) to an aqueous solution…

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Q: (b) The number of moles of potassium that contains 8.93 × 104 atoms. x 10 mol

A: Given  Atoms of potassium = 8.93 x 1025  To find = number of moles of potassium

Q: A crime scene analyst found out a 10 mm thick metal plate was penetrated by 10 bullets that caused a…

A: Given the thickness of the metal plate, h = 10 mm  Total number of holes formed = 10  Diameter of…

Q: Copper(II) sulphate, CuSO4, is a white crystalline compound that gives an aqueous solution from…

A: The mass of copper(II) sulphate pentahydrate, CuSO4.5H2O is = 1.547 g  The mass of anhydrous of…

Q: what weight in kilogram of sodium can you get from 3.57x10^24 ions of na2so4

A: In Na2SO4 , for every ion it there are two ions of the Na, implies for every mole of Na2SO4 there…

Q: Chromium metal is obtained by heating chromium(III) oxide with carbon. Calculate the mass percent of…

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Q: Gypsum, CaSO4 · 2 H2O, is used to manufacture cement. What is the mass percent of water in this…

A: Given :-  molecular formula of gypsum =  CaSO4 · 2 H2O  To calculate :-  mass percent of water in…

Q: An organic compound was found to contain only C, H, and C1. When a 1.50 g sample of the compound was…

A: To given solution-Explanation:Complete solution.

Q: 1.How many moles of CuO can be produced from 1.11 mol of Cu2O in the following reaction?…

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: Provide the name of the oxyanion of the acid HNO2(aq). Spell out the full name of the ion.

A:

Q: A mixture of CuSO4 · 5H2O and MgSO4 · 7H2O is heated until all the water is lost. If 5.047 g of the…

A: A mixture of CuSO4·5H2O & MgSO4·7H2O is heated until all the water is lost. 5.047 g of the…

Q: An organic compound consists of carbon, hydrogen and nitrogen only. Complete combustion of a 150. mg…

A:

Q: Starting with the following equation, Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s) calculate the moles of…

A: For the first question,The mass of Fe produced is 925 grams.The given chemical reaction is .To…

Q: D4), and siderite (FECO3)

A: Mass of  element in compound= mass of element×100÷mass of compund Fe3O4 have higest quantity of Fe…

Q: Calamine is a naturally occurring zinc silicate that contains the equivalent of 67.5% zinc oxide,…

A: Using mole concept we can easily determine how much reactants  is used or composition of elements in…

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".