B. Percentage of Water in an Unknown Hydrate CUC2·X H20 UNKNOWN # mass of beaker and watchglass + unknown hydrate (before heating) 123.02 123.02 mass of beaker and watchglass 121.98 122.01 mass of unknown hydrate 122.81 122.78 mass of beaker and watchglass + anhydrous compound (after heating) nass of water (before heating - after heating) Show the calculation for the percentage of water for trial 1 (see Example Exercise 2). Percentage of water in the unknown hydrate Average percentage of water C. Water of Crystallization in an Unknown Hydrate 170.48 g/mol molar mass of anhydrous compound (AC) (see Instructor) percentage of water (see Procedure B) percentage of anhydrous compound (AC) Show the calculation for the water of crystallization (see Example Exercise 3). Water of crystallization НО AC• (Based on how rounding goes at various parts of this, there are two possible answers that I'll consider correct. Just put Formula of hydrate Analysis of Alum 138 down one of them.) 60

B. Percentage of Water in an Unknown Hydrate CUC2·X H20 UNKNOWN # mass of beaker and watchglass + unknown hydrate (before heating) 123.02 123.02 mass of beaker and watchglass 121.98 122.01 mass of unknown hydrate 122.81 122.78 mass of beaker and watchglass + anhydrous compound (after heating) nass of water (before heating - after heating) Show the calculation for the percentage of water for trial 1 (see Example Exercise 2). Percentage of water in the unknown hydrate Average percentage of water C. Water of Crystallization in an Unknown Hydrate 170.48 g/mol molar mass of anhydrous compound (AC) (see Instructor) percentage of water (see Procedure B) percentage of anhydrous compound (AC) Show the calculation for the water of crystallization (see Example Exercise 3). Water of crystallization НО AC• (Based on how rounding goes at various parts of this, there are two possible answers that I'll consider correct. Just put Formula of hydrate Analysis of Alum 138 down one of them.) 60

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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Data Table 1: NaHCO, Reaction Data Mass of evaporating dish (g) 47.19919 Mass of evaporating dish + NaHCO: (g) 47.B0029 Mass of NaHCO: (g) a30119 Mass of evaporating dish + NaCl product after 1st heating (g) Mass of evaporating dish + NaCl product after 2nd heating (g) Mass of evaporating dish + NaCl product after 3rd heating (g) (if necessary) 47.04L69 47.0469 Mass of NaCl product (g) (actual yield) 020559
A mixture of barium chloride and sulfuric acid yield the precipitate barium sulfate and hydrochloric acid according to the double replacement reaction: A large quantity of barium chloride is used to ensure that the sulfuric acid is the limiting reactant. If 45.0 grams of barium sulfate are produced, what mass of H2SO4 must be dissolved in the initial aqueous solution? _ g [Number in standard notation; round your answer to one decimal place] The following molar masses may or may not be needed, but are provided to save you time: barium sulfate = 233 g/mol sulfuric acid = 98.0 g/mol
Albuterol sulfate is a white crystalline powder that can be taken in a solid form or mixed into asolution, which can then be nebulized, inhaled, or injected. Albuterol sulfate is used to prevent andtreat wheezing and shortness of breath caused by wheezing problems. We’re going to look only atthe albuterol in this problem, which is an organic compound (MM = 239.35 g mol^-1) composed of65.2% Carbon, 8.86% Hydrogen, 20.0% Oxygen, and the rest Nitrogen by mass. Find the empiricaland molecular formulas for albuterol
4HF(aq) + CO2 (s) CF4(9)+2H2O(1) With excess HF, a chemist needs to know what mass (in grams) of carbon dioxide is needed in order to produce 36.0 mol of water. Here is part of their work. Solve this problem on your own first before completing this question. 36.0 mol H20 al 22 X Tmal Co, =? g CO2 Match each part with where it belongs in the stoichiometry set-up. One of them is not needed, so match it with "This is not needed" for that part. a1 [ Choose ] a2 [Choose ] a3 [ Choose ] This is not needed [Choose]
Excess sodium bicarbonate (NaHCO3) is added to a 250. mL solution sulfuric acid (H2SO4). The sodium bicarbonate the sulfuric acid react as shown below, producing liquid water, carbon dioxide gas and aqueous sodium sulfate. 1 H2SO4 (aq) + 2 NaHCO3 (s) → 2 H20 (I) + 2 CO2 (g) +1 NazSO4(aq) The temperature is 29.°C, and the volume of gas produced, collected in an inverted cylinder over water, is 175. mL. Assume this reaction goes to completion. If the total pressure inside the inverted cylinder at the end of the reaction is 316 torr, what was the molarity of the sulfuric acid solution?
The formula to use for calculations of dilutions is 1. VịC = V½C2 %3D 2. VịC2 = V½C1 V2 3. a %3D 4. O 1 O 2 O 3 O 4 ||
Consider the reaction. heat 2 Al(s) + Fe,0,(s) Al,03(s) + 2 Fe(1) If 11.5 kg Al reacts with an excess of Fe,O2, how many kilograms of Al,0, will be produced? mass of Al,0, produced: kg
Iron reacts with oxygen gas to form a mixture of FeO and Fe₂O₃ when the supply of oxygen is regulated. A sample of 20.00 g iron metal reacts with oxygen gas to form 28.10 g iron oxide mixture, and all of the iron metal was consumed. What is the mass in g of FeO that were produced in the mixture?
Hydrogen is manufactured on an industrial scale by this sequence of reactions: CH, (g) + H,0 (g) CO (g)+3 H, (g) K1 CO (g) + H,0 (g)= CO, (g)+H, (g) K2 The net reaction is: CH4 (g) +2 H,0 (g) CO, (g)+4H, (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K
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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)