Hydrates compounds are? Select one: a. contain sulfur dioxide b. ionic compounds that contain a fixed number of water molecules trapped in their crystalline structures c. ionic compounds that appear wet d. chemicals that are not well defined e. organic compounds that contain a fixed number of water molecules trapped in their crystalline

Hydrates compounds are? Select one: a. contain sulfur dioxide b. ionic compounds that contain a fixed number of water molecules trapped in their crystalline structures c. ionic compounds that appear wet d. chemicals that are not well defined e. organic compounds that contain a fixed number of water molecules trapped in their crystalline

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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In the "Methodé Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is )) C6H1206(aq) → 2C2H50H(aq) + 2C02(g) Fermentation of 750. mL of grape juice (density = 1.0 g/cm3) is allowed to take place in a bottle with a total volume of 825. mL until 12.5% by volume is ethanol (C,H;OH). Assuming that the Co, is insoluble in H,0 (actually a wrong assumption), what would be the pressure of CO, inside the wine bottle at 25°C? (The density of ethanol is 0.79 g/cm3)
What volume of 0.177 M NaOH , in milliliters, contains 25.0 g of NaOH ?
1. A 4.24 g sample of a laboratory solution contains 1.42 g of acid. What is the concentration of the solution as a mass percentage? 2. Isopropyl alcohol is mixed with water to produce a solution that is 35.0% alcohol by volume. How many milliliters of each component are present in 645 mL of this solution?
Swimming pool water is often made safe for swimming by treating with chlorine in the form of sodium hypocholrite (NaOCI) solution. If a swimming pool contains 5.62×10^5L of water, what volume of 5.00% NaOCI (by mass) solution is required to produce a sodium hypoclorite concentrarion of 3.00×10^-7 mol /L? (assuume the density of water and the NaOCI solution is 1.00g/ml). Do not give handwriting solution.
concentration of the solution. (c) the mass in grams of NiCl2 contained in each liter O. A 12.5% (w/w) NiCl2 (129.6l g/mol) solution has a density of 1.149 g/mL. Caleulate(a) the molar concentration of NiCl, in this solution. (b) the molar CI oncentration of the solution. (c) the mass in grams of NiCl, contained in each liter of this solution. 10- Describe the preparation of (a) 2.50 L of 21.0% (w/v) aqueous glycerol (C.HO: (92.1 g/mol). (b) 2.50 kg of 21.0% (w/w) aqueous glycerol. (c) 2.50 L of 21.0% (v/v) aqueous glycerol. U- Describe the preparation of 900 mL of 3.00 M HNO, from the commercial reagent that is 70.5% HNO, (w/w) and has a specific gravity of 1.42. 12- A solution containing 10.0 mmol CaCl, is diluted to 1 L. Calculate the number of grams of CaCl2. 2H2O per milliliter of the final solution. 13- Calculate the grams of each substance required to prepare the following solutions: (a) 250mL of 0.100 M KOH, (b) 1.00 L of 0.0275 M K;Cr,O, (c) 500ml of 0.0500 M CUSO4. 38 0%…
0.529 47.629 1. Initial mass of copper 2. Mass of copper and evaporating dish 3. Mass of evaporating dish 4. Mass of recovered copper 5. Percent yield (show cafcuntions) 6. Describe the reaction Cu(s)+HNO3(aq)→. 7. Describe the reaction Cu(NO3)2(aq)+NaOH(aq)→. 8. Describe the reaction Cu(OH)2(s)-A. 9. What are you removing by this washing? 10. What copper compound is present in the beaker? 11. Describe the reaction CuSO4(aq)+Zn(s) or CuSO4(aq)+ AI(s). 12. What is present in solution? 13. What is the gas? 14. How do you know? 15. What are you removing by washing? 16. What color is your copper sample? 17. Is it uniform in appearance? 18. Suggest possible sources of error in this experiment.
A solution of CaCl2CaCl2 in water forms a mixture that is 41.5%41.5% calcium chloride by mass. If the total mass of the mixture is 163.0 g,163.0 g, what masses of CaCl2CaCl2 and water were used?
Iron ore is impure Fe2O3. When solid Fe2O3 is heated with an excess of carbon, iron metal, and carbon monoxide are produced. From a sample of ore weighing 878 kg, 515 kg of pure iron is obtained. What is the % Fe2O3, by mass, in the ore sample?
8. A. Balance the following equations: i. a. S (s) + O2……………….> SO2(g) b. H2O2 (aq) + H2S (aq)……………..> H2O(l) + S (s) c. NaBr(aq) + Cl(aq) + NaCl(aq) Br (aq) d. A(s) + O2(g) ………………..> Al2O3 e. CH4 (g) + O2 (g) …………..> CO2(g) + H20 (l) ii. Identify the Oxidizing and reducing agents in the following equation: a. 2Cu (s) + O2(g) …………> 2CuO b. Cl(aq) + 2KI(aq)
Fluid therapy is a critical component in the clinical management of many medical patients. Theconcentration of saline solution (NaCl) recommended for this therapy depends on the medicalneeds of the patient. To maintain electrolyte balance, the doctor prescribes a dosage of no morethan 0.0077 moles of NaCl in 100 mL of the saline fluid. The available saline solution is 0.154M, packaged in 1-liter quantities. How many mL of this concentrated solution do you need toprepare 100 mL of the desired dosage?
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