Number Of Moles In Cocl2 6h2o

77 mole * 6. Note that rounding errors may occur, so always check the results. Calculate the % H2O?. You also know how the weight of water that was lost. 02 x 1023 H atoms 1. This volume is called the molar volume of a gas. Lab partner-Juraj. on StudyBlue. Consider the example of CrCl3 6H2O. Give us feedback about your experience with Molecular Weight Calculator. chem 1031 determination of the formula of a hydrate purpose and goals determine the number of moles of water in an unknown hydrate. Peso computação molecular (massa molecular). 00 g of hydrogen? 1 H atom 1. I drew its Lewis structure and got a trigonal planar shape with a double bond on the oxygen and I would normally think it was nonpolar because of the symmetrical shape, however, I am aware that O has a higher electronegativity than Cl so maybe the net dipole moment might be pointing towards O which would make it polar, but I'm not sure. You can also insert sample data to explore how changes to the data (specific errors) correspond to getting an answer that is either high or low. 94g H2O can be obtained from 15. If you are not provided with the number of moles but you do have the volume and mass of the solution, you will need to use these two figures to calculate the number of moles before continuing on. 11g) find the theoretical number of moles for H20 How do I do it?. It is shown by how large the value of Keq is. what fraction of the pitcher of water is in each glass? if each glass contains six ounces of water, how many ounces of water were originally in the pi - brainsanswers. 98gram, and the mass of product anhydrous copper sulphate is 0. Calculate the number of moles of this. B) 6 moles of H2O 2 moles of NH3. Lab partner-Juraj. 01 × 106 =1. 406x10^-3 moles. Based on the following chemical equation 2C6H6 + 15O2 12CO2 + 6H2O calculate the number of moles of CO2 that will be produced when 8. Because an ionic compound dissociates into its components cations and anions in solution, the key to the problem is identifying how many moles of ions are produced during dissolution. Based on the mass of water and total sample mass, we can calculate the mass percent of water Mass percent of water, % = (mass of water/ mass of original sample) x 100 Determine number of moles Mass of anyhdrous portion = mass of substance left after heating Figure out how many moles there are of water and of anhydrous portion Divide number of. Solid State Kinetic Parameters and Chemical Mechanism of the Dehydration of CoCl2. Molar mass of NaCl is 58. 0 grams of isotopically pure C-12. The reactants and products, along with their coefficients will appear above. Well you got [math]\text{cobalt(II) chloride hexahydrate}[/math]. 9 1mol CoCl2 6H2O --> 6 mol H2O 6 mol H2O * 18g/1mol = 108g H2O percent of water =108g H2O/237. 6H2O, CoCl2. = 232g/mol. The overall reaction in the body is described by the equation C6H12O6(aq) + 6O2(g) = 6CO2(g) + 6H2O(l). 2 kJ/mole) Electronegativity (1. Since the double bond can be placed in more than one place without rearranging the atoms, COCl2 exhibits resonance. Instructions. moles = mass ÷ molar mass or n = m ÷ M Substitute the values into the equation and solve to find moles of oxygen gas: moles = n = 124. 64 g CoCl2 6H2O ( mol CoCl26H2O/ 237. 115 M HCl with 0. 6H2O have been transformed K3 [Fe (C2O4)3]. theory acids _bases_and_salts. This implies that. 5) That answer will tell you how many moles of water there are for every mole of CoCl2. 4g/1)(1mol/130g) = (13. A student weighs out 2. 406x10^-3 moles. 1 "The Chemical Equation" , we stated that a chemical equation is simply a recipe for a chemical reaction. The overall reaction in the body is described by the equation C6H12O6(aq) + 6O2(g) = 6CO2(g) + 6H2O(l). Hydrates generally contain water in stoichiometric amounts; hydrates’ formulae are represented using the formula of the anhydrous (non-water) component of the complex followed by a dot then the water (\(\ce{H2O}\)) preceded by a number corresponding to the ratio of \(\ce{H2O}\) moles per mole of the anhydrous component present. 0 cm3 of a solution of lithium hydroxide, concentration 1. Peso computação molecular (massa molecular). For the part you will be calculating the amount Of sodium carbonate required for the complete precipitation of cobalt2 carbonate. Search results for CoCl2. How to calculate 100 microMolar solution of COCl2. Knowing the weight of water and dry CoCl2 you can determine the number of moles of each. To perform a stoichiometric calculation, enter an equation of a chemical reaction and press the Start button. First Ionization Energy (758. 5) That answer will tell you how many moles of water there are for every mole of CoCl2. 77 moles of CoCl2 Multiply the moles by Avagodro's number 1. Mole Relationships One mole of atoms, ions, or molecules contains Avogadro’s number of those particles One mole of molecules or formula units contains Avogadro’s number times the number of atoms or ions of each element in the compound Finding Empirical Formulas Combustion Analysis gives % composition Compounds containing C, H and O are. 11g) find the theoretical number of moles for H20 How do I do it?. This volume is called the molar volume of a gas. Based on the mass of water and total sample mass, we can calculate the mass percent of water Mass percent of water, % = (mass of water/ mass of original sample) x 100 Determine number of moles Mass of anyhdrous portion = mass of substance left after heating Figure out how many moles there are of water and of anhydrous portion Divide number of. Molar Mass. 4g/1)(1mol/130g) = (13. When an organic compound is burned in the presence of oxygen, carbon dioxide and water are produced How Many Moles Of CO2 Will Be Produced When 8. C) add up the atomic numbers of all the atoms present. 73 moles of KClO 3? 4 Fe + 3 O 2 è 2 Fe 2O 3 4. The special number we use, Avogadro's number (6. 022 x 1023 units of that substance Avogadro's number is based on Carbon standard 12C so that 12. What is the correct form of the conversion factor (mole ratio) needed to convert the number of moles of H2O to the number of moles of NH3 produced? Mg3N2 (s) + 6H2O(l) 3Mg (OH)2 (s) + 2NH3 (g) A) 18 g of H2O 17 g of NH3. Cоединение to convert from weight to number of. 4 by 1 mole or how do I do it?. then find the mass of water. Learn vocabulary, terms, and more with flashcards, games, and other study tools. What is the value of x in the formula for the hydrate? (hint: remember that x represents the ratio of moles of H2O to moles of hydrate compound, and that moles of hydrate compound equals the moles of anhydrou. 022 x 10 23 = 6. Biological organisms burn fuel. 02 g CoCl2 6H2O ( mol CoCl26H2O/ 237. The combustion of ethane (c2h6) produces carbon dioxide and steam: 2C2H6(g) + 7O2(g) --> 4CO2(g) + 6H2O(l) How many moles of CO2 are produced when 5. The reactants and products, along with their coefficients will appear above. Instructions. 25% of the weight. This number was determined to be 6. 9994) ›› Percent composition by element. 4 by 1 mole or how do I do it?. 77 mole * 6. The following is an example of the empirical formula of a hydrated crystal: BaCl2 ( 2 H20. 84 g/mole = 1. 33 moles entre 6 y multiplicarlo por 4 y dara 22. PV = nRT Eq. 1M given in our problem. The study of the numerical relationships between the reactants and the products in balanced chemical reactions is called stoichiometry. 20 g sample of phosphorus was reacted with oxygen to form an oxide with a mass of 14. 0 mole of CO2. This program was created with a lot of help from: The book "Parsing Techniques - A Practical Guide" (IMHO, one of the best computer science books ever written. 00 mole of C2H6. 0 mol NH3 c. The mass (in grams) of a compound is equal to its molarity (in moles) multiply its molar mass: grams = mole × molar mass. 21x10^-3 moles c) Determine the number of moles of chloride in the compound. ) as the number of atoms in exactly 12. The compound forms several hydrates CoCl 2 •n H 2 O, for n = 1, 2, 6, and 9. This means that the number of moles of glucose present before the dilution is equal to the number of moles of glucose present after the dilution. Reaction stoichiometry could be computed for a balanced equation. 052 grams/mole =0. Dissociation Of H2O is very less so we don't consider it's dissociation. conditions (50 °C, 2h) to prove catalysis of CoCl2·6H2O to the aldol condensation of furfural with 2,4-pentanedione. Remember that one mole of any substance contains Avogadro number of particles (may be atoms or molecules or ions etc. Did you mean to convert one of these similar formulas? grams CoCl2. Y entonces lo siguiente es sacra ek peso molecular del acido fosfrico PM del H3P04. The mole ratio of Na:Cl 2 is 2:1, so we multiply the 5. B) 6 moles of H2O 2 moles of NH3. (nwater / nsalt) REMEMBER, we cannot use part of a water molecule, so round your answer to the nearest whole number. Easily share your publications and get them in front of Issuu's. 6H2O used in this reaction. To determine the formula mass of a compound you should A) add up the atomic masses of all the atoms present. To help to this problem I will assume you have one liter of each solution. You also know how the weight of water that was lost. Get an answer for 'determine the initial and final mass of cobalt chloride compound, the mass of the water that was driven off,the # of moles of dry CoCl2 there were? Dry Lab-involves a sample of. Equilibrium can also be affected by pressure as well, with its constant represented by Kp. Calculate the number of moles of Co^+2 are there in the equation Co(H2O)6^+2 +4Cl CoCl4^-2 +6H2O? I had found in the previous question the number of moles of CoCl2*6H2O and I'm not sure but I believe the moles of CoCl2*6H2O are. What Is the Equation C6H12O6 + 6O2 --> 6CO2 + 6H2O + Energy? The scientific equation C 6 H 12 O 6 + 6O 2 —> 6CO 2 + 6H 2 O + Energy is the chemical reaction for respiration within a cell. Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa. CoCl2 molecular weight is 129. Peso computação molecular (massa molecular). of water driven off. Use this page to learn how to convert between grams COCl2. CoCl2 molecular weight is 129. 09 ¥ 10-3mol BaCl 2 Ê Ë Á Á ˆ ¯ ˜ ˜ = 2. 90 mol of H2O are produced? - Slader Based on the following chemical equation: 2C6H6 + 15O212CO2 + 6H2O, calculate the number of moles of CO2 that will be formed when 8. Les données sont 7. I was wondering if COCl2 was polar or nonpolar. Solved: how many moles of CO2 are produced if 6 moles of O2 are used? C6H12O6 +6O2 > 6CO2 + 6H2O - Slader. The dozen is used to count 12 items. 05 ¥ 10-2 mol water 5. 62 G Of CoCl2⋅6H2O Is Heated, The Residue Has A Mass Of 0. 096 O: 6 x 16. Sung-Hyeok Moon. 5H2O is dissolved in water. Easily share your publications and get them in front of Issuu's. 3) Convert the grams of H2O into moles. 0955 M NaOH, what is the pH of the solution after 10. Calculate the % H2O in the hydrate. 00 moles of CF 2 Cl 2. 33) then you simply apply the formula. B) 6 moles of H2O 2 moles of NH3. 02 x 10 23 atoms of an element or molecules of a compound. Convert between CoCl2*6H2O weight and moles. The chemical equation for this reaction is,. In this particular lab, the stresses tested were concentrations of HCl, H2O and AgNO3, as well as increased and decreased temperature on the system. Correction to Calculate % H20 in hydrates and number of moles After 0. 00 mol of H2O react, how many grams of NH3 are produced?. Y entonces lo siguiente es sacra ek peso molecular del acido fosfrico PM del H3P04. 1 Moles The mass of 1 mole of a substance in grams (also known as Gram Atomic Mass) Mass given on periodic table is in amu Because amu and grams are relative we can say the masses on the periodic table are in grams 1 mol 22. Explain how a mole is similar to a dozen. 몰 질량 of CoCl2*6H2O is 237. Phosgene | COCl2 or CCl2O | CID 6371 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety. In chemistry, you often need to know the molar mass of the substance for calculations. I was wondering if COCl2 was polar or nonpolar. 31 / (58. 2) Note that, after heating, you end up with anhydrous magnesium sulfate, MgSO 4 and you will have remaining the same number of moles of the anhydrous product as you had moles of the hydrated reactant. Easily share your publications and get them in front of Issuu’s. This example problem demonstrates how to calculate the molarity of ions in an aqueous solution. = 232g/mol. Molar mass Molar ratio 180. To help to this problem I will assume you have one liter of each solution. The molar mass and molecular weight of CoCl2 - Cobalt(ii) Chloride is 129. The balanced equation will appear above. on StudyBlue. of water driven off. 0 grams of isotopically pure C-12. How Many Moles Of CO2 Will Be Produced When 8. Solved: how many moles of CO2 are produced if 6 moles of O2 are used? C6H12O6 +6O2 > 6CO2 + 6H2O - Slader. Percentage Composition But first, a word or two about hydrates Hydrates Hydrates are ionic cmpds (salts) that have water molecules bound to their ions. 875 g of Fe(NH4)2(SO4)2 · 6H2O. 7791-13-1:Cl2Co. 4 dm3 and the value of the Avogadro constant L = 6. 94g H2O can be obtained from 15. 2) Note that, after heating, you end up with anhydrous magnesium sulfate, MgSO 4 and you will have remaining the same number of moles of the anhydrous product as you had moles of the hydrated reactant. The reactants and products, along with their coefficients will appear above. xH2O, after heating the copper sulphate hydrated crystals to copper sulphate anhydrous. Using Equation 4, determine the water of hydration by comparing the number of moles of water with the number of moles of anhydrous salt. edu "Only when you know the hazards, can you take the necessary precautionary measures. 73 moles of KClO 3? 4 Fe + 3 O 2 è 2 Fe 2O 3 4. Hydrates generally contain water in stoichiometric amounts; hydrates’ formulae are represented using the formula of the anhydrous (non-water) component of the complex followed by a dot then the water (\(\ce{H2O}\)) preceded by a number corresponding to the ratio of \(\ce{H2O}\) moles per mole of the anhydrous component present. 9+71+ 108 ) = 0. In chemistry, you often need to know the molar mass of the substance for calculations. Glucose is used as an energy source by the human body. 21x10^-3 moles c) Determine the number of moles of chloride in the compound. 41 moles of fluorine? b) How many moles of fluorine are needed to produce 4. From #3 and #4, you can ratio the number of moles ot water to the number of moles of Co. Formula for a Hydrate. Thus, we can say that: 1 mole of H 2 = 1 mole x 6. The heterostructure is confirmed by XRD, HRTEM, and XPS measurements. If you are not provided with the number of moles but you do have the volume and mass of the solution, you will need to use these two figures to calculate the number of moles before continuing on. 750 moles 3. My answer: 4. 00 mol of CO2, 0. 6523 g of CoCl2 * 6H20 is heated, the residue has a mass of 0. Purpose / goal - is to get the formula of hydrate by determining the number of moles of compounds. The main stresses that can be placed on an equilibrium system are changes in concentration, changes in temperature, and changes in pressure or volume for gases. Given that Keq = 6 x 10^9 for the reaction, it tells the inspectors that the concentration of the products is very high and the concentration of the reactants is low. b) Calculate the volume and hence the number of moles of acid used in the second part of the titration and thus the number of moles of hydrogencarbonate (and thus carbonate). remember how to convert mole into mass or mass into mole using the definition of mole, which is, mass(g) mole molarmass(g/mol) = There are two ways of interpreting any chemical equation that are in terms of molecules or in terms of moles. Respiration is defined as the oxidation of sugar by organisms. 몰 질량 of CoCl2*6H2O is 237. 9 and the formula would be: CoCl2 * 5H2O. Calculate the number of. asked • 02/27/18 After 0. 7 grams of KMnO 4 into enough water to make 750 mL of solution. What is the correct form of the conversion factor (mole ratio) needed to convert the number of moles of H2O to the number of moles of NH3 produced? Mg3N2 (s) + 6H2O(l) 3Mg (OH)2 (s) + 2NH3 (g) A) 18 g of H2O 17 g of NH3. 0 cm3 of a solution of lithium hydroxide, concentration 1. Peso computação molecular (massa molecular). The Equation for the unknown solution is Co(NO3)2 * n H2O. ››More information on molar mass and molecular weight. Définitions de la masse moléculaire, le poids moléculaire, la masse molaire et le poids molaire. Cobalt(II) Chloride Hexahydrate CoCl2. A mole is 6. Convert between CoCl2*6H2O weight and moles. 000 moles 10) The equilibrium constant for thermal dissociation of F2 F2(g) <-> 2F(g) is 0. How many moles of ions are released when 0. 02 x 10 23 atoms of an element or molecules of a compound. Calculate the number of moles (formula weight) of this. 77 mole * 6. 275 moles of Fe is reacted? 5. Equation 4 Waters of hydration = † number of moles water, mol number of moles anhydrous salt, mol Ê Ë Á Á ˆ ¯ ˜ ˜ = 1. I think I am supposed to divide the number of moles given in a-d by the number of molecules. The gravimetric analysis of phosphorous in this experiment is based on the precipitation of phosphorous as MgNH4PO4. Correction to Calculate % H20 in hydrates and number of moles After 0. Explain how a mole is similar to a dozen. 6 H2O = 45% MgSO4. You also know how the weight of water that was lost. The reactants and products, along with their coefficients will appear above. H2O is: Cobalt(II) Chloride Monohydrate Generally, for students and common people, CoCl2. 6H2O (purple) respectively. Oxidation occurs when the oxidation number of an atom increases while reduction occurs when the oxidation number decreases. You could use any volume as long as you divide the number of moles by the number of liters. Hydrate Lab Check spread sheets are attached below. 9 and the formula would be: CoCl2 * 5H2O. 02 moles/L) as catalyst at room temperature and atmospheric pressure. 1 Determine the mole ratio of moles of H2O to moles of CoCl2 and the formula for the hydrated compound in the form of CoCl2* XH2O 2 Determine the actual percent by mass of the water in CoCl2* 6H2O. 3g of CoCl2. How many moles of ions does the solution contain?. 022×1023 Moles Ionic compound. Molar Mass. 00 mol of H2O react, how many grams of NH3 are produced?. I have tried to dissolve this in a number of acids and bases. 10g of CoCl2. Ionic compound that has water incorporated into its crystal structure Written as MgCl2 6H2O Calculate the GAM for this hydrate Mg: 1 x 24. For example, consider the combustion of methane gas (cooking gas). 5 g de CoCl2, 6H2O je trouve : nKNO2=7. How Many Moles Of CO2 Will Be Produced When 8. 6H2O Molar Mass, Molecular Weight. Their photocatalytic performances are evaluated by the degradation of. Molar mass Molar ratio 180. The reactants and products, along with their coefficients will appear above. Study 25 4 flashcards from true b. 6H2O + P4O10 Reactivos. How many moles of Fe 2O 3 are produced when 0. Calculate the percentage composition of the compound. 551 g of potassium (K)? How many H atoms are in 72. 88) Electron Affinity. Examples of complete chemical equations to balance: Fe + Cl2 = FeCl3. Calculate the number of moles (formula weight) of this. 20 moles of sodium hydrogen phosphate. 33) * (6/1) = 1. (c) Calculate the number of moles of K2C2O4 in 24. 몰 질량 of Zn(NO3)2*6H2O is 297. 5) That answer will tell you how many moles of water there are for every mole of CoCl2. 6H2O to moles ››. 09 ¥ 10-3mol BaCl 2 Ê Ë Á Á ˆ ¯ ˜ ˜ = 2. number of moles or a number of moles into a mass. Instructions. Since 1 mole of any substance contains 6. conditions (50 °C, 2h) to prove catalysis of CoCl2·6H2O to the aldol condensation of furfural with 2,4-pentanedione. A complex chemical species with central metal atom surrounded by number of ligands (anions or neutral atoms). Calculate the number of moles of Co^+2 are there in the equation Co(H2O)6^+2 +4Cl CoCl4^-2 +6H2O? I had found in the previous question the number of moles of CoCl2*6H2O and I'm not sure but I believe the moles of CoCl2*6H2O are. Potassium manganate (VII) (KMnO4) solution is standardised by titration against the ammonium iron(II) sulphate, FeSO4. *Please select more than one item to compare. 6H2O, 59-60. 21x10^-3 moles c) Determine the number of moles of chloride in the compound. asked by Cheallaigh on April 23, 2012; Chemistry. 16 Hydrates. Molarity is a concentration in terms of moles per liter of solution. 0 atm and the temperature is 27. 93 g These will be the respective molar masses for CoCl2 and CoCl2. How many moles of oxygen are required to burn 22. Search results for CoCl2 6h2o at Sigma-Aldrich. 00194 mol CoCl2. For sample 1, in which the mas of FAS taken was 1. 77 mole * 6. Type in your own numbers in the form to convert the units! ›› Similar chemical formulas. Based on the following chemical equation 2C6H6 + 15O2 --> 12CO2 + 6H2O calculate the number of moles of CO2 that will be produced when 8. 8 moles of water and 2 moles of CoCl2, then X must be 5. 2) Note that, after heating, you end up with anhydrous magnesium sulfate, MgSO 4 and you will have remaining the same number of moles of the anhydrous product as you had moles of the hydrated reactant. asked by RM on January 1, 2017; Chemistry. Since X is a whole number it cannot be 4. If one mole alcl3 produces Al3+ and 3Cl-. 07 x 10 25 moles. The reaction for producing glucose in plants, called photosynthesis, is 6CO2+6H2O→lightC6H12O6+6O2 If a plant produces 9. Best Answer: 4NH3 + 5O2 ---> 4NO + 6H2O If you start with four moles of NH3 and three moles of O2, then O2 is the limiting reactant and there is an excess of NH3. 6H2O to moles grams COCl2. Calculate the number of moles of Co^+2 are there in the equation Co(H2O)6^+2 +4Cl CoCl4^-2 +6H2O? I had found in the previous question the number of moles of CoCl2*6H2O and I'm not sure but I believe the moles of CoCl2*6H2O are. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Your online site for school work help and homework help. My answer: 8. Use these to confirm you have done your calculations correctly. D) 1 mole of Mg3N2 6 moles of H2O. Oxidation occurs when the oxidation number of an atom increases while reduction occurs when the oxidation number decreases. To determine the percent yield of a product in a chemical reaction we need to know the amount of all reactants used, the amount of the product formed and the balanced chemical reaction. How to convert from mole to number of molecules. 000 moles 10) The equilibrium constant for thermal dissociation of F2 F2(g) <-> 2F(g) is 0. Convert between CoCl2*6H2O weight and moles. number of moles or a number of moles into a mass. The reactants and products, along with their coefficients will appear above. Correction to Calculate % H20 in hydrates and number of moles After 0. 90 mol of H2O are produced?. Seimbangkan NaOH + CoCl2*6H2O = Co(OH)2 + NaCl + H2O persamaan atau tindakbalas kimia menggunakan kalkulator ini!. To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets. In chemistry, you often need to know the molar mass of the substance for calculations. 6523 g of CoCl2 x 6H2O is heated, the residue has a mass of 0. 10g of CoCl2. 0277 mol H2O. 00L container, which of the folowing is the correct number of moles of F2 that have dissociated at equilibrium ?. Peso computação molecular (massa molecular). 0084 mol CoCl2 6 H2O ( 6 mol H2O/ 1 mol CoCl2) (18. Lab partner-Juraj. Calculate molar mass (calculate molecular weight, Molar Mass Calculator). 6H2O g) ammonium carbonate, (NH4)CO3 h) aluminium sulphate, Al2 (SO4)3 i) oxygen gas NUMBER OF MOLES Vs NO. 5) That answer will tell you how many moles of water there are for every mole of CoCl2. A complex chemical species with central metal atom surrounded by number of ligands (anions or neutral atoms). A step-by-step explanation of how to draw the COCl2 Lewis Structure. How many moles of ions does the solution contain?. given that initial mass of copper sulphate hydrated is 0. 6H2O I first worked out the entire formula mass for CoCl2. 052 grams/mole =0. remember how to convert mole into mass or mass into mole using the definition of mole, which is, mass(g) mole molarmass(g/mol) = There are two ways of interpreting any chemical equation that are in terms of molecules or in terms of moles. The CoCl2·6H2O being the most effective antiproliferative agent, hence it was further tested against lung (A549), prostrate (PC-3) and brain (IMR-32) cell lines. How many moles of oxygen are required to burn 22. 78 g) was dissolved in water and re-crystalized. 2) Convert the grams of CoCl2 into moles. 95g of cobalt(II) carbonate were added to 40cm3 of hydrochloric acid, concentration 2. 63 grams of fluorine? d) What mass of IF5 is produced by the reaction of 154 grams of iodine? 2. 0 mol NH3 c. You also know how the weight of water that was lost. A student weighs out 2. Cobalt(II) chloride is an inorganic compound of cobalt and chlorine, with the formula CoCl 2. 2/What was the actual number of moles of water per formula unit CoCl 2?. Instructions. 9 and the formula would be: CoCl2 * 5H2O.