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Interpretation:
Epsom salt has the formula MgSO4. 7H2O. Water molecules associated with one formula unit of MgSO4 is to be found out and the chemical name of Epsom salt is to be written.
Concept introduction:
Few chemical compounds on crystallization from water solution produce crystals that contain water molecules as a part of their crystal structure. These water molecules of the crystals are called as water of crystallization or water of hydration. The crystal that results from the process of crystallization is referred as hydrate. Conversely, the water molecules can be driven away from the crystals by applying heat energy to afford anhydrous chemical compounds. The well-known example of a compound having water crystallization is CuSO4.5H2O. The anhydrous chemical compound CuSO4 (colorless) is combined with 5H2O molecules on crystallization from a water solution result in hydrated CuSO4.5H2O (blue). The name of this chemical compound is denoted as copper (II) sulfate penta hydrate. In this case, the prefix ‘penta’ is usually referred as the presence of 5 molecules (water).
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Chapter 6 Solutions
Introductory Chemistry: An Active Learning Approach
- What is the mass of one molecule of water? O 1.0 amu O 18 amu O 1.8 amu O 180 amu O Oarrow_forwarde 2N2(g) +502 (g) → 2N2O5 (g) BeCl2 (s) + H₂O(g) → BeO(s) + HCl(g) BeCl₂ (s) + H₂O(g) ->> BeO(s) + BaH₂ (s) + H₂O(l) → Ba(OH)2 (s) + H₂(g) BaH₂ (s) + H₂O(l) Submit Answer - Ba(OH)2 (s) + Retry Entire Group 1 more group attempt remaining Cengage Learning Cengage Technical Support HC1(g) H₂(g)arrow_forward4. How many moles of water are present in a 20.00 gram sample of lithium permanganate, LiMnO4:3H20?arrow_forward
- A hydrate of cerium (III) sulfate, Ce2(SO4)3, contains 20.2% water by mass. Deduce the formula for this hydrate. Show your calculations.arrow_forwardHow would your calculation of the average number of water molecules present in the Epsom salt be affected if some of the magnesium sulfate had popped out of the beaker during the initial heating and was not weighed?arrow_forwardTartazine, C16H9N409Na352, is a synthetic yellow food dye that provides a lemon color to various food products. As few as 7 x 10 to the 16 molecules are sufficient to impart a noticeable color to 1 mL of water. How many grams of tartrazine is this?arrow_forward
- An 8.00 gram sample of the hydrated salt, CoCl2 x XH2O was thermally decomposed into anhydrous cobalt (II) chloride and water vapor. 4.370 grams of anhydrous cobalt (II) chloride was obtained. Determine the number of water molecules (X) in the salt. (CoCl2 = 130 g/mole; H2O = 18.0 g/mole)arrow_forwardThe combustion of glucose (C6H12O6) is the predominant pathway for energy production in humans. If the body burns 3.7 g of glucose, how much water is produced?arrow_forwardIn an experiment, 34.8243g of copper (II) nitrate hydrate, Cu(NO3)2•zH2O was heated to a constant mass of 27.0351g. Calculate the percent water in this hydrate?arrow_forward
- A 10.5 g sample of lithium is reacted with 18.5 g of fluorine to form lithium fluoride:Li + F2 → LiF. After the reaction is complete, what will be present?arrow_forward3. Another way to calculate the number of waters hydrated to an ionic compound is through it's precent composition. An unknown aluminum sulfate hydrate has the formula Al2(SO4)3 ZH20. If the entire compound is 8.10% Al by mass, calculate the Z value, or how many water molecules are associated with the aluminum sulfate.arrow_forwardDetermine the number of moles in 2.69 × 10²³ formula units of CaCl₂.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
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