a 0.755g sample of hydrated copper sulfate of hydrated copper sulfate CuSO4.XH2O was heated carefully until it has changed completely to anhydrous copper(II) sulfate (CuSO4) with mass of 0.483 g. Dertermine the value of x . this number is called the nubmber of waters hydration of copper (II) sulfate. it specifies the number of water molecules per formula unit CuSO4 in the hydrated crystal.

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Here we are required to find the percentage of anhydrous copper chloride

Q: An empty erlenmeyer flask weighs 241.3 g. when filled with water (density - 0.997 g/mol), the flash…

A: Given: Mass of empty Erlenmeyer flask = 241.3 g. Mass of Erlenmeyer flask with water = 489.1 g. And…

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Q: An ingredient of Tiger Balm salve is composed of C, H and O.  A 0.1005 g sample of the ingredient is…

A: Given :  Weight of sample = 0.1005 g  Weight of CO2 produced = 0.2829 g  Weight of H2O produced =…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Given,  Formula of hydrate copper(II) chloride = CuCl2.xH2O Mass of crucible = 16.221 gMass of…

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Q: A 0.25 M NAOH is to be standardized with KHP. How much 100% KHP (204.22 g/mol) should be weighed so…

A: Given, Molarity of NaOH solution = 0.25 M = 0.25 mol/L Volume of NaOH solution = 15 mL = 0.015 L…

Q: In an experiment 0.500 gg of copper reacted with oxygen to give 0.563 gg of copper oxide. What is…

A: Answer 1:       Mass percentage of copper in copper oxide = given mass of coppergiven mass of copper…

Q: A beaker contains 48.948.9 mL of carbon tetrachloride (CCl4CCl4, density is 1.591.59 g/mL).…

A: Volume of carbon tetrachloride = 48.9 mL  Density = 1.59 g/mL  Density = mass ÷ volume

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: Caffeine, a stimulant found in coffee, contains 49.5%% CC, 5.15%% HH, 28.9%% NN, and 16.5%% OO by…

A: Mass percentage of constituent elements of caffeine in the molal mass of 195 g/mol are: 49.5% by…

Q: A student obtains a mixture of the chlorides of two unknown metals, X and Z. The percent by mass of…

A: Given: Mixture of metal X and Z. And mass percent of X and Z in the mixture.

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A:

Q: 4-During the water of crystallization Mass of an empty crucible 40.60 g. experiment, the following…

A:

Q: 4.39 x 10^27 P4 O10 molecules = Atoms

A:

Q: What mass in grams (g) of Li3PO4  (MM=115.97 g/mol) is needed to prepare 300. mL of a solution…

A: Given: Lithium ion concentration = 0.148 M MM=115.97 g/mol Volume of solution = 300 mL

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A:

Q: www-awn.aleks.com Significant Figures Counter Sign out Sign out My Courses-Blackboard...…

A: Number of moles of phosphoric acid is calculated as given below,

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A: Given:  unit amount of  substance used for measuring large quantities of very small entities such as…

Q: If an atomic mass unit equals 1.66 × 10−24 g, what is the mass in grams of 5.00 × 1022 formula units…

A:

Q: Don't get how to fill in the table attached below.

A: The number of water molecules present inside a crystal is known as water of crystallization.The…

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A:

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A:

Q: 2. A particular brand of beef jerky contains 0.0552 % sodium nitrite (NaNO2) by mass and is sold in…

A: Given: % NaNO2=0.0552 % 1 bag contains 8 oz sample Mass of sample= 8 x 28.35 g =226.8 g

Q: A student has been tasked to determine the percent water in thalium (III) nitrate, Tl(NO3)3 . xH2O.…

A: Thalium (III) Nitrate is a salt having the molecular formula Tl(NO3)3. In normal conditions, it…

Q: CH3 HBr a) ? Br NaOC,H5 / isi b) ? 1.NABH4 ? c) 2. Hао

A:

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Q: * 00 3. Alum [KAI(SO4)2XH20] is used in food preparation, dye fixation, and water purification. To…

A:

Q: Al,(SO.); Al: S: O: NaOH Na: 0: H: (NH,),S N: H: S: DO IT LIKE THE GIVEN EXAMPLE EXAMPLE 1) CuBr2…

A:

Q: Use the molar mass of Ca3(PO3)2 to calculate the number of formula units in 10.0 g of CP.  Give your…

A:

Q: An ice freezer behind a restaurant has a freon leak, releasing 41.59 g of C, H,F,Cl into the air…

A: Chlorofloro carbons are referred as the freons which depletes the ozone layer.

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Q: Which of the following is equal to 6.022 x 10^23 molecules? * 31.98 g Q_2

A: We will choose Correct statement

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A:

Q: Upon heating, a 2.500 g sample of hydrated magnesium chlorate, Mg(ClO3)2 loses 0.903 g of water.…

A: A numerical problem based on determination of number of hydration, which is to be accomplished.

Q: In an experiment, 34.8243g of copper (II) nitrate hydrate, Cu(NO3)2•zH2O was heated to a constant…

A: Given, mass of copper (II) nitrate hydrate is 34.8243g and when heated the mass is 27.0351g.  The…

Q: Moles of  water in copper (II) sulfate n hydrate? Mass of copper (II) sulfate n hydrate= 4.738g…

A: Hydrated salt is salt which is  having water in their crystals and anhydrated  salt is salt  where…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Here we are required to find the percentage of water.

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following…

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A:

Q: A. Calculations for the Determination of Ammonium Chloride The data from the data entry portion of…

A: Given that, Mass of evaporating dish, w1 = 38.478 g Mass of evaporating dish + original sample, w2 =…

Q: Aspirin can be prepared from salicylic acid (C7H;O3), which has a molar mass of 138.12 g/mol, and…

A:

Q: 8. Potassium persulphate (Anthion) is used in photography to remove the last traces of hypo from…

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A: Balanced equation: CO2 (g)  +  4H2 (g)  -----> CH4 (g) + 2H2O (g) Number of mol of methane =…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.