thank you for your reply and feedback. A compound is formed when 29.0 g Ag combine completely with 4.30 g S. What is the percent composition of each element in this compound? This number may be useful to remember on the day of the test or while doing practice problems.*. You need to dissolve CaCl_2 in water to make a mixture that is 29.0 \% calcium chloride by mass. What is the percent composition of water in calcium chloride dihydrate {/eq}, by assuming that we have 1 mole of the hydrate. r some time because the water gets dried up from the heat of the sun. There are 2 moles of water in the compound CaCl2 2H2O. Calcium chloride dihydrate | 10035-04-8 - ChemicalBook Dissolves violently in water What is the mass of CaCl_2 in grams? What is the percentage of water in the hydrate Na_2CO_3 x 10H_2O? [34][30], Neutral calcium chloride; calcium(II) chloride, calcium dichloride (1:2), E509, Except where otherwise noted, data are given for materials in their. Gypsum is a hydrate with two water molecules present for every formula unit of CaSO 4 . What is the percent composition of magnesium in MgCl2? a. Do Eric benet and Lisa bonet have a child together? What is the mass percent of chromium in the chloride salt of (Cr(H2O)5(OH))2+? Calculate the percent water (by mass) in the following hydrates: a) CaCl2 2 H2O calcium chloride dihydrate b) CuSO4 6 H2O copper (II) sulfate hexahydrate So therefore75%/49.3% = 1.52. This is a 1: ANSWER Dilution. If the total mass of the mixture is 599.7 g, what masses of CaCl2 and water should be used? {/eq}. CuSO_4 = 159.62g Mass of water = 18.02 x 5 = 90.1g CuSO_4 5 ( H_2O) = 249.72g Calcium chloride is an inorganic compound consisting of calcium and chloride. 4. Mass Percent: 27.261%, Element: Hydrogen Who makes the plaid blue coat Jesse stone wears in Sea Change? Rank the compounds from least percentage of water to greatest percentage of water. water - Determining which hydrate of calcium chloride I have Calculate the percentage of water in hydrate. What is the percent composition of each element in the formula for potassium phosphate (K, P, and O, respectively)? Symbol: O Our mobile site works way better when you have JavaScript enabled. You need to dissolve CaCl2 in water to make a mixture that is 29.0% calcium chloride by mass. It dissolves with the liberation of heat. 6H_2O? Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? These compounds are mainly used for de-icing and dust control. The precipitate, after having been filtered and air-dried, has a mass of 0.375 g. The limiting reactant in the salt mixture was later determined to be CaC l2 . Solved 1. What is the percent by mass of water in the - Chegg What is the percent concentration of 3000 mg of CaCl2 in 100 mL of water? Would My Planets Blue Sun Kill Earth-Life? 56.0% c. 195% d. 21.0%. What is the percentage composition of sodium dihydrogen phosphate? Determine the empirical formula for this compound. In the production of cheese, CaCl2 is used as a source of calcium. What is the percent by mass of water in the hydrate CaCl2 2H2O? Why don't we use the 7805 for car phone chargers? Calculate the percent water (by mass) in the following hydrates: a) CaCl2 2 H2O calcium chloride dihydrate b) CuSO4 6 H2O copper (II) sulfate hexahydrate Experts are tested by Chegg as specialists in their subject area. 79 percent b. These relative weights computed from the chemical equation are sometimes called equation weights. The characteristic odor of pineapple is due to ethyl butyrate, a compound containing ca rbon, hydrogen, and oxygen. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. Solved Kemmi is practicing a calculation of the theoretical - Chegg Mass Percent: 21.766%. The (aq) shows that they are aqueous dissolved in water. If the total mass of the mixture is 278.6 g, what masses of CaCl_2 and water should be used? Incompatible with vinylmethyl ether. crystalline solid which is deliquescent (absorb water). Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? Calcium chloride is used in the preparation and transformation of competent E. coli and in the transfection of eukaryotic cells with either plasmid DNA or high molecular weight genomic DNA.The CaCl2-mediated electroporation of E. coli with the plasmid DNA pBR322 has been studied.A protocol for the concentration of virus vectors that uses CaCl2 has been published. If the total mass of the mixture is 235.5 g, what masses of CaCl_2 and water should be used? Convert between CaCl2*2H2O weight and moles Compound Moles Weight, g CaCl2*2H2O Elemental composition of CaCl2*2H2O 38.765% B. A person dissolves CaCl_2 in water to make a mixture that is 38.5 percent calcium chloride by mass. What is the percentage composition of water in a sample of SrS2O3 + 5H2O? Calcium chloride is used as road salt You need to dissolve CaCl_2 in water to make a mixture that is 33.0% calcium chloride by mass. The percent composition of a specific chemical species X in a mixture or sample is commonly expressed in terms of weight percent (wt%) and volume percent (vol%). If the total mass of the mixture is 846.6 g, what masses of CaCl2 and water should be used? Power your marketing strategy with perfectly branded videos to drive better ROI. 2. If the total mass of the mixture is 401.1 g, what masses of CaCl2 and water should be used? Add up all the mass values and you have the value for molar mass. The equation for CaCl2 (Calcium chloride) and H2O usually isnt considered a chemical reaction since it is easy to change the Ca2+ and Cl- back to CaCl2 (just let the H2O evaporate). # atoms element A * Atomic Mass element A = Mass A, # atoms element B * atomic mass element B = Mass B. without substantially changing the chemical composition of the If the total mass of the mixture is 221.5 g, what masses of CaCI2 and water should be used? Percentage of water in calcium chloride dihydrate salt is - Toppr It is used in swimming pools and aquariums as a pH buffer and a rapid source of calcium ions. https://www.drugs.com/pro/calcium-chloride.html. The molar mass of CaCl_2 is 111.0 g/mole and the molar mass of water is 18.02 g/mol. See how to determine the empirical formula from percent composition. What is the percent by mass of calcium in the compound? What is the percent composition of the elements in Sn(CrO_4)_2? The molar mass of CaCI2 is 111.0 g/mol and the molar mass of water is 18.02 g/mol. Calcium chloride dihydrate tested according to Ph. All rights reserved. A gas has a solubility in water of 2.9 g/L at 15C and 1.5 atm of pressure. Explain the error caused by each of the following; how would the % H2O by mass be affected? A 0.972 g sample of CaCl 2 -2H 2 O and K 2 C 2 O 4 -H 2 O solid salt mixture is dissolved in 150 mL of deionized water, previously adjusted to a pH that is basic. (Three significant digits, units of g) A person dissolves CaCl_2 in water to make a mixture that is 38.5 percent calcium chloride by mass. It has various kinds of applications. Water of hydration means water that is chemically combined with The percent by mass of Ca in CaCl_2 is equal to _____. Where are Pisa and Boston in relation to the moon when they have high tides? To find the percent composition (by mass) for each element in CaCl2 2H2O we need to determine the molar mass for each element and for the entire CaCl2 2H2O compound. Calcium chloride, CaCl2, is often used in winter to deal with ice on sidewalks. Is calcium chloride an acidic or basic salt? If the total mass of the mixture is 254.6 g, what masses of CaCl_2 and water should be used? You can carry out this step for $\ce{CaCl2.6H2O}$ on your own and then finally calculate the percentage change. https://en.wikipedia.org/wiki/Calcium_chloride 12H2O) are also very rare. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. You need to dissolve CaCl2 in water to make a mixture that is 38.5% calcium chloride by mass. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo). Moreover, in a mole of the hydrate, there are 2 moles of water. If the total mass of the mixture is 886.2 g, what masses of CaCl2 and water should be used? Because the anhydrous salt is hydroscopic and deliquescent, it is used as a desiccant. a. Ph. Find the molar mass of the hydrate (Calcium Chloride Dihydrate). Explain the error caused by each of the following; how would the % H2O by mass be affected? CaCl2 has been used in the stabilization and twodimensional crystallization of the NADH-ubiquinone oxidoreductase (complex I) from Escherichia coli. Find the molar mass of water and the anhydrate (anhydrate + water = hydrate); add the molar mass values of each to find the. What is the mole fraction of calcium chloride in 3.35 m CaCl2(aq)? It loses H2O at 200o so it can be dried at high temperatures to dehydrate it. # of Atoms: 2 Learn how to determine the percent of water in a hydrate. You need to dissolve CaCl2 in water to make a mixture that is 32.0% calcium chloride by mass. a substance in such a way that it can be removed, as by heating, xcolor: How to get the complementary color. What is the percent composition of sulfur in N2S2? iPad. Calcium chloride dihydrate is an odourless white solid in the form of small flakes. rev2023.5.1.43405. I have a chemical formula with $27\%$ $\ce{CaCl2.6H2O}$ and $43\%$ water with the balance of $30\%$ being other chemicals. You need to dissolve CaCl_2 in water to make a mixture that is 31.5 % calcium chloride by mass. (1) For CaCl2.2H2O, % water = (2*18/147)*100 = 24.49% For CoCl2.6H2O, % water = (6*18/238)*100 = 45.37% For CuSO4.5 View the full answer Transcribed image text: Rank the following compounds in terms of their theoretical mass percent water. Molar mass of CaCl2.2H2O = 147.01456 g/mol, Molecular weight calculation: You need to dissolve CaCl2 in water to make a mixture that is 33.5% calcium chloride by mass. What is percent composition? Calculate percent water in the following hydrates: 1. You need to dissolve CaCl2 in water to make a mixture that is 33.5% calcium chloride by mass. If the total mass of the mixture is 646.0 g, what masses of CaCl2 and water should be used? The percentage of water (by mass) in CaCl 2.6H 2O is: A 39.4 B 43.9 C 49.3 D 46.5 Medium Solution Verified by Toppr Correct option is C) Hydrated salt is CaCl 2.6H 2O So, % of water in compound is 186+40+35.52186 100=49.3 % Video Explanation Was this answer helpful? What is the percent composition of lithium and bromine in LiBr? What is the percent composition by mass of carbon in benzene? What is the percent composition of water in Na2CO3 x 10H2O? I want to convert the $\ce{CaCl2.6H2O}$ and water percentage to $\ce{CaCl2.2H2O}$. Q2-Mass of hydrated calcium chloride =40+71+36=147g. Track your food intake, exercise, sleep and meditation for free. Atomic Mass: 35.453 Often it will not be exact to the rounding of the atomic mass for elements.Note: CaCl2 2H2O is also known as Calcium chloride dihydrate. (CaCl22H2O) is the hydrate form of calcium chloride. If the total mass of the mixture is 958.6 g, what masses of CaCl_2 and water should be used? Combustion of 2.78 mg of ethyl butyrate produces 6.32 mg of CO_2 C O2 and 2.58 mg of H_2O H 2O What is the empirical formula of the compound? nH2O, where n = 0, 1, 2, 4, and 6. What is the percent composition by mass of water in a compound with a gram formula mass of 4905 g/mol? [10] Uses [ edit] De-icing and freezing-point depression [ edit] In evaporated milk, it is used at levels not more than 0.1 percent to adjust the salt balance so as to prevent coagulation of milk during sterilization. 2H2O calcium chloride dihydrate ANSWER= 24.5% Solution: For calculating % water ( by mass ) , you used following formula % water = ( mass of water in compound / total mass of compound) 100 Since in CaCl2 .2H2O , first we calculat View the full answer Transcribed image text: The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. Divide the molar mass of water by the molar mass of the hydrate, and multiply result by 100%. The percent of water in hydrated calcium chloride is 21.8 % Explanation: To calculate the mass percentage of water in hydrated calcium chloride, we use the equation: Mass of 2 water molecules = 32 g Mass of hydrated calcium chloride = 147 g Putting values in above equation, we get: Learn more about mass percent: brainly.in/question/4362028 For the formula CH4, what is the percent composition of all elements? Learn how to find the percent composition of compounds. Robert Kemp, Suzanne E. Keegan "Calcium Chloride" in Ullmann's Encyclopedia of Industrial Chemistry 2000, Wiley-VCH, Weinheim. CaCl2 is also used to increase the firmness of canned fruits and pickled vegetables. Best Match Video Recommendation: Solved by verified expert Find the molar mass of the hydrate (Calcium Chloride Dihydrate). Solved Can someone check my work and let me know if it is | Chegg.com can magnesium chloride and iodine react together? All rights reserved, Calciichloridumdihydricum,PhEur01/2005:0015, CALCIUM CHLORIDE 2-HYDRATE, MOLECULAR BIOLOGY GRADE, Calcium chloride dihydrate, flakes for drying purposes, 77-80% CaCl2, extra pure, Calcium chloride dihydrate, for analysis ACS, 99.0+%, Calcium chloride dihydrate, for analysis, 99+%, CALCIUM CHLORIDE, DIHYDRATE REAGENT (ACS), Calcium chloride dihydrate, ACS, 99.0-105.0%, Calcium chloride dihydrate, ACS, CaCl 74.0-78.0%, EMPROVE(R) CalciuM Chloride, Dihydrate, Extra Pure, USP, BP, FCC, JP, Ph Eur, CalciuM chloride dihydrate, for analysis ACS, 99+% 500GR, CalciuM chloride dihydrate, for analysis, 99+% 1KG, CalciuM Chloride, Dihydrate, Powder, Reagent, CalciuM chloride.2H2O Molecular biology grade, Calcium chloride dihydrate ACS reagent, >=99%, Calcium chloride dihydrate puriss. It is deliquescent (absorbs moisture from the air) and rapidly dissolves in water producing heat (exothermic). A) Calculate the mass of water in the hydrate, based on the formula. So that makes the weight of $\ce{CaCl2.6H2O}$ present in the intial mixture to be: Next, calculate the number of moles of $\ce{CaCl2.6H2O}$ you had in the beginning by: dividing the mass you've just obtained by the molecular mass of this compound. A compound is found to consist of 2.89 g of calcium and 5.11 g of chlorine. 2. Finding molar mass starts with units of grams per mole (g/mol). Did Billy Graham speak to Marilyn Monroe about Jesus? # of Atoms: 1 Is the number of moles of Cacl2.6H20 27/219 =0.123 ? OneClass: A 0.879g sample of a CaCl2x2H2O/K2C2O4xH2O solid salt mixtur Her compound is calcium chloride dihydrate and the formula is CaCl 2 2H 2 O. I understand molecular weight percentage of $\ce{CaCl2}$ is higher in $\ce{CaCl2.2H2O}$ so I expect the percentage of calcium chloride will increase but I'm unable to calculate by how much. It is used as a firming agent for canned tomatoes, potatoes, and apple slices. CaCO_3 \cdot 6H_2O. You need to dissolve CaCl_2 in water to make a mixture that is 31.5% calcium chloride by mass. Calculate the percent ionic character of a chemical bond between calcium and oxygen. What is the molar mass of calcium chloride dehydrate. 20.22% C. 25.4, What is the percentage of copper and chlorine in (a) CuC (b) CuCl_2. Higher, Lower, Cause no change, etc. What is the percentage of water to the nearest tenth in this compound: Ba(OH)2 8H2O? what is the percent composition of N_2O_3.? If you are given the formula you would do analysis of the information provided. It also enhances the competence of Escherichia coli cells as well as strengthened -lactoglobulin gels by forming crossbridges. Why did DOS-based Windows require HIMEM.SYS to boot? Koger, Nov 1977, "Calcium Chloride, Practical Necrotizing Agent". In this video we will describe the equation CaCl2 + H2O and write what happens when CaCl2 is dissolved in water.When CaCl2 is dissolved in H2O (water) it will dissociate (dissolve) into Ca 2+ and Cl- ions. When heated, crystals lose water @ 100C. Calcium Chloride SIDS Initial Assessment Profile, UNEP Publications, SIAM 15, Boston, 2225 October 2002, page 11. substitute from vegetable or fruit juices, Learn how and when to remove this template message, "Properties of substance: calcium chloride", "Binary Phase diagram: The Calcium Chloride water system", "Clinical evaluation of non-surgical sterilization of male cats with single intra-testicular injection of calcium chloride", "Narcos Are Waging a New Drug War Over a Texas Company's Basic Chemical", "Product Safety Assessment (PSA): Calcium Chloride", Product and Application Information (Formerly Dow Chemical Calcium Chloride division), Report on steel corrosion by chloride including CaCl, Collection of calcium chloride reports and articles, Centers for Disease Control and Prevention, https://en.wikipedia.org/w/index.php?title=Calcium_chloride&oldid=1145215287, 772775C (1,4221,427F; 1,0451,048K), This page was last edited on 17 March 2023, at 21:03. Crystallise it from ethanol. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. a. Determine the percentage composition of the compound HCl? 3. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. In the production of beer and soft drinks, CaCl2 is used as a source of calcium to regulate the hardness of water. @jane If your calculations are correct I see no flaw in your reasoning, and that's a good method; I hope you're getting a correct answer! p.a., ACS reagent, reag. The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. solutions - How can I convert weight percentage of calcium chloride Chem 105 Experiment Formula Stoichiometry Worksheet.docx As a group, we obtained our salt mixture of calcium chloride and potassium oxalate, and weighed the mixture. What time does normal church end on Sunday? Hi @Berry Holmes,Thank you so much for your really well laid out answer. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. I want to convert the $\ce{CaCl2.6H2O}$ and water percentage to $\ce{CaCl2.2H2O}$. What is the percent composition of hydrogen in (NH4)2S? 2. What is the percent composition of Freon, CCl_2F2? A. 6H20 to CaCl2.2H20 ? A. You need to dissolve CaCl2 in water to make a mixture that is 34.5% calcium chloride by mass. How do the interferometers on the drag-free satellite LISA receive power without altering their geodesic trajectory? Build a site and generate income from purchases, subscriptions, and courses. You need to dissolve CaCl_2 in water to make a mixture that is 33.5% calcium chloride by mass. Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. is: CaCl 2.2H 2O Here, we need to add the total no of masses; 40 (Ca)+71 (Cl)+2x18 (water) = 147 2H 2O/CaCl 2.2H 2O = 36/147 x 100 = 24.49% Calcium plays important roles in many biological processes, including signal transduction, muscle contraction, and maintenance of cell membrane and cell wall stability.Extensive reviews of the experimental measurement of biological calcium have been published. # of Atoms: 2 . Ph Eur, Calcium chloride dihydrate - Industrial grade, calcium chloride insect cell culture*tested, Calcium chloride solution 36-40%, (1box=27kgs), (2S)-1-(3-Acetylthio-2-methyl-1-oxopropyl)-L-proline, Zhuozhou Wenxi import and Export Co., Ltd, Calcium chloride dihydrate(10035-04-8)IR1, Calcium Chloride, Dihydrate, MB Grade (1.02383). What is the theoretical percentage of water of hydration in cacl2-2h20? Determine the percentage composition of each of the following compounds a) NaCl b) AgNO_3 c) Mg(OH)_2. for melting snow, a drying agent in desiccators, for dehydrating organic liquids and gases, in refrigeration brines What is the percent composition of aluminum in aluminum chloride? All other trademarks and copyrights are the property of their respective owners. 1314. What is the percentage composition of all the elements in Na_2B_4O_7? What is the percentage composition by mass of water in CaSO_{4}\cdot2H_{2}O, What is the percent composition of the elements in the compound sodium chloride? Eur., USP, FCC, E509, 99-103%, 0.0001% Al, OmniPur Calcium Chloride, Dihydrate - CAS 10035-04-8 - Calbiochem, Calcium chloride dihydrate for molecular biology, Weijer International Trade (Hebei) Co., Ltd. a. copyright 2003-2023 Homework.Study.com. It is used with disodium EDTA to protect the favor in pickles and as a source of calcium ions . Analysis of an ore of calcium shows it to contain 13.61 g of calcium and 21.77 g of oxygen in a sample weighing 46.28 g. What is the percentage composition of this compound? The water that's part of the solid's crystal structure is called water of crystallization. Calculate the molecular mass of calcium chloride (CaCl2). If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. If the total mass of the mixture is 717.8 g, what masses of CaCl2 and water should be used? Calcium chloride - Wikipedia Molecular weight of CaCl2.2H2O - Convert Units You need to dissolve CaCl2 in water to make a mixture that is 32.0% calcium chloride by mass. For example, it can be used as a desiccant due to its high hygroscopicity; used for the deicing and dust control; for road surfacing; as brine for refrigeration plants, ice and cement; increasing the water hardness in the swimming pools; as a food additives; increasing the cell membrane permeability to facilitate the genetic transformation of cells; for the treatment of hypocalcemia in which the body requires a prompt increase in blood plasma calcium levels, For its production, it can be either produced directly from limestone or produced by the Solvary process as the by-product. Hi Berry,Thank you so much for your really well laid out answer. 12.92% C. 19.97% D. 2.5797%. a. It has many industrial applications and is commonly used to prevent dusting, as a drying agent and to melt ice. For help asking a good homework question, see: How do I ask homework questions on Chemistry Stack Exchange? Determine the percent composition by mass of HCl. You need to dissolve CaCl2 in water to make a mixture that is 33.5% calcium chloride by mass. What is the percent composition of sulfur in (NH4)2S? It acts as a pH buffer in swimming pool water. May and antifreeze, as a dust-proofing agent, food additives, Calculate the theoretical percentage of water in nickel(II) chloride dihydrate, NiCl2 2H2O. How to find the. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why does calcium chloride cause a greater freezing point depression in water than magnesium chloride? You need to dissolve CaCl2 in water to make a mixture that is 28.5% calcium chloride by mass. A compound is found to consist of 2.89 g of calcium and 5.11 g of chlorine. You need to dissolve CaCl2 in water to make a mixture that is 40.0% calcium chloride by mass. [32][33][30] So is true for rorisite, CaClF (calcium chloride fluoride). Calculate the percent water (by mass) in the Calcium chloride is a colorless to off-white the water present in wet clothes gets converted into water vapor and is released into the atmosphere due to evaporation which leaves them dry. What is the percent composition of chlorine in MgCl2? What is the percent by mass of water in MgSO4 7H2O? If the total mass of the mixture is 206.9 g. what masses of CaCl_2 and water should be used? Calcium Chloride SIDS Initial Assessment Profile, UNEP Publications, SIAM 15, Boston, 2225 October 2002, pp. It is hygroscopic. What's the cheapest way to buy out a sibling's share of our parents house if I have no cash and want to pay less than the appraised value? 14.751 % Explanation: As its name suggests, barium chloride dihydrate, BaCl2 2H2O, is an ionic compound that contains water molecules in its crystal structure, i.e a hydrate. If the total mass of the mixture is 578.5 g, what mass of CaCl_2 is used? Hygroscopic. Molar mass of CaCl2*2H2O - WebQC Solved Calculate the percent water (by mass) in the | Chegg.com Mass of escaped water from calcium sulfate (hydrate).043 g 13. It only takes a minute to sign up. Now according to the stoichiometry of the reaction I've given you, when $1$ mole of $\ce{CaCl2.6H2O}$ converts, you get $1$ mole of $\ce{CaCl2.2H2O}$. How much Calcium Hydroxide to manufacture calcium formate? Determine the percentage of calcium ion in Ca3(PO4)2. Percent of water in CaCl2*2H2O on Vimeo We use the most common isotopes. Thanks! from Andre Muir. moles CaCl2.2H2O to grams Molecular weight calculation: 40.078 + 35.453*2 + 2* (1.00794*2 + 15.9994) Percent composition by element Element: Chlorine Symbol: Cl Atomic Mass: 35.453 # of Atoms: 2 Mass Percent: 48.231% Element: Calcium Symbol: Ca Atomic Mass: 40.078 # of Atoms: 1 Mass Percent: 27.261% Element: Hydrogen Symbol: H Atomic Mass: 1.00794 If the total mass of the mixture is 776.3 g, what masses of CaCl2 and water should be used? Find the molar mass of water and the anhydrate (anhydrate + water = hydrate); add the molar mass values of each to find the molar mass of the hydrate. To calculate the mass percentage of water in hydrated calcium chloride, we use the equation: Mass of hydrated calcium chloride = 147 g. Putting values in above equation, we get: This site is using cookies under cookie policy . In regards to chemistry, what is percent composition? You need to dissolve CaCl-2 in water to make a mixture that is 33.0% calcium chloride by mass. Stable. Answer to Solved 2. Write the formula and calculate the percent water in aluminum chloride dihydrate? Atomic Mass: 1.00794 Thanks for your efforts Berry I really appreciate it :). If the total mass of the mixture is 426.3 g, what masses of CaCl2 and water should be used?