Gypsum is the hydrate of calcium sulfate, CaSO4 · 2 H2O.  It is the primary material in sheet rock, used to make walls in houses. Calculate the percent water in the hydrate.  Report your response to 3 significant figures and include % as the unit.

Q: Cobalt (II) chloride hexahydrate, CoCl2 · 6H2O, is often used as a humidity indicator. This is due…

A: Mass percent of an element in a compound is defined as the mass of that element per 100g of that…

Q: mass

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Q: The hydrated salt, MY3·xH2O, was heated strongly in a crucible to remove all the water molecules of…

A: Given: Mass of empty crucible and cover = 28.86 g Mass of crucible, cover, and hydrated salt = 32.86…

Q: (optional) Blue turquoise is an example of a hydrate mineral containing copper; the chemical formula…

A: Mass percentage of any component may be calculated as, Mass percentage = mass of the component total…

Q: Sulfuric acid can be manufactured using the reaction: 2 S(s) + 3 02(g) + 2 H2O(1) → 2 H2SO.(aq) If a…

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Q: For the chemical equation  2HBr (aq) + Ba(OH)2 (aq) yields to 2H2O (L) + BaBr2 (aq)  write the net…

A: Net ionic equation involves only the ions that actually take part in the reaction excluding the…

Q: At a certain temperature, an aqueous solution is 16.5% K2CO3 by mass and has a density of 1.149…

A: Given: density of solution = 1.149 g/cm3 Molar mass of K2CO3 = 138.205 g/mol Mass percent of…

Q: You have a method that requires you to make a solution of disodium hydrogen phosphate (Na2HPO4). It…

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Q: Consider the following reaction. How many moles of oxygen are required to produce 10.0 moles of…

A: Given,No of moles of water = 10 moleC3H7SH(l) +6O2(g) →3 CO2(g) +SO2(g) +4H2O (g)How many mole O2…

Q: What is the molarity of C₁2H22011 in an aqueous solution that is prepared by dissolving a 29.87 g…

A: A mole is a basic unit of an element. It is the collection of Avogadro number of particles i.e.…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Hi, as you have posted 2 questions and have not mentioned which one you want us to solve for you.…

Q: A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration…

A: Concentration of salt in various lakes can be determined. Concentration in terms of molarity is…

Q: Hydrofluoric acid, HF(aq)HF(aq), cannot be stored in glass bottles because compounds called…

A: Given reaction Na2SiO3(s)+8HF(aq)→H2SiF6(aq)+2NaF(aq)

Q: and assuming concrete is 100% by volume CaO, how much CO2 was released producing the concrete used…

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Q: Ammonia (NH) is an important compound since it is used in large amounts for the manufacture of…

A: Given 1.2 mol of Nitrogen and Hydrogen gas  30% of ammonia is reacted  We have to find moles of…

Q: A solution of 75 mM tartaric acid (CaH,O6) in water is used as a standard in HPLC analysis. How many…

A: We know that 1 molar solution stands for 1 mole solute is dissolved in 1 litre solution.  Now, we…

Q: What volume of 95.0% alcohol by weight (density: 0.809g/cm^3) must be used to prepare150 cm^3 of…

A: Given, Density of 95.0% alcohol by weight = 0.809 g/cm3 Density of 30.0% alcohol by weight =…

Q: What is the mass of (9.00*10^0) number of water molecules ? Report your answer to 3 significant…

A: Given:  Number of water molecules = 9.00 × 100 molecules = 9 molecules  To calculate : Mass of water…

Q: A particular brand of beef jerky contains 5.81\times 10^-2% sodium nitrite by mass and is sold in an…

A: Answer:Mass percentage of a substance in a mixure is equal to its mass present in 100 g sample of…

Q: A student decides to conduct an experiment by using two different flasks and two different gas…

A: Average kinetic energy and rms velocity calculation:

Q: 1. Calculate the theoretical percentage of water for the following hydrates. (a) manganese(II)…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: For a 77.1% mixture of methanol (CH3OH) in water on a mass basis, calculate the percentage of…

A: The number of moles of a compound is related to its mass by the following relation: Number of moles…

Q: 5. Answer the following question regarding stoichiometry: How many grams of malachite, CuCO,Cu(OH)2…

A: From the given data, mass of NaCO3 = 10.3 g  mass of CuSO4.5H2O = 2.05 g  Also,  molar mass of NaCO3…

Q: A chemist prepares a solution of sodium bromide   NaBr    by measuring out  30.9mg  of  NaBr…

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Q: A number of reactions can be used to generate common gases on a laboratory scale. For example,…

A: Total volume of gas produces= 161.ol Volume of N2 produces=101.ol Pressure given =0.920 atm…

Q: In the Dumas method for determining the molar mass of an unknown volatile liquid, a sample of a…

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Q: The first-order rate constant for the decomposition of N2O5, 2N2O5 (g)→4NO2 (g) + O2 (g) -3 at 70°C…

A: Given reaction: 2N2O5 (g) → 4NO2 (g) + O2 (g) The first-order rate constant = 6.82 × 10-3 s-1 The…

Q: . A concentrated perchloric acid solution is 65.8% HClO4 by mass and its density is 1.68 g mL−1.…

A: 65.8 g HClO4 in 100 g solution. Density = mass/volume  Volume of solution = 100/1.68 = 59.52 ml…

Q: What is the molarity of C12H22011 in an aqueous solution that is prepared by dissolving a 29.87 g…

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Q: One method used in the production of H2 gas is to put the coal into an incomplete combustion…

A: A balanced reaction has equal number of atoms of each elements on either side of the reaction. The…

Q: 16 The odor of fish is due primarily to amines, especially methylamine (CH3NH₂). Fish is often…

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Q: Consider the following reactions: CoO (s) + CO (g) D CO2 (g) + Co (s) Kc(1) = 490. 2 CoO (s) + 2 H2…

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Q: Example 8. The laboratory reagent, concentrated nitric acid, is generally 69 per cent by mass of…

A: Given: The mass of the nitric acid solution is 19.9 g. The density of the nitric acid solution is…

Q: A number of reactions can be used to generate common gases on a laboratory scale. For example,…

A: Stoichiometry, in balanced chemical reaction is defined by the ratio at which reactants are reacting…

Q: What mass of salt (NaCl) in grams (g) is required to prepare 3.894 L ofD51/4NS solution? Give your…

A: We have to calculate the mass of the salt (NaCl) in grams is required to prepare 3.894 L ofD51/4NS…

Q: Give the mass of the solute and mass of the solvent for 1.30 L of a solution that is 14.0 % of…

A: Given data :  Volume of solution = 1.30 L = 1.30 × 103 ml  Density of solution = 1.16 g/ml   Mass by…

Q: Convert 750 ppb Al(III) to molar units

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Q: Give the mass of the solute and mass of the solvent for 1.30 LL of a solution that is 17.0 %% of…

A: Given, % by mass of Pb(NO3)2 = 17.0 % Volume of solution = 1.30 L = 1300 mL     (1 L = 1000 mL)…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.