- Determining AH Ca('s) + 2H20-Са2+(ад) + 20Н (ад) + Н2(g) Trial 1 Trial 2 Volume H20 (mL) 25.1 25.2 Initial Temperature (°C) 21.3 20 Final Maximum Temperature (°C) 31 30 AT (°C) 9.7 10 Mass of Calcium (g) 0.22 0.198 Moles of water (mol) Moles of calcium (mol) Enthalpy of reaction AH (kJ/mol) Average enthalpy of reaction (kJ/mol)

- Determining AH Ca('s) + 2H20-Са2+(ад) + 20Н (ад) + Н2(g) Trial 1 Trial 2 Volume H20 (mL) 25.1 25.2 Initial Temperature (°C) 21.3 20 Final Maximum Temperature (°C) 31 30 AT (°C) 9.7 10 Mass of Calcium (g) 0.22 0.198 Moles of water (mol) Moles of calcium (mol) Enthalpy of reaction AH (kJ/mol) Average enthalpy of reaction (kJ/mol)

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter3: Statistical Tests With Excel

Section: Chapter Questions

Problem 7P

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Use only the first decimal points (X.X) for atomic masses. R = 8.314 L*kPa/mole*K . In a reactor at 200.0 kPA and 401 L, hydrogen and oxygen combine by the following reaction:2H2(g) + O2(g) --> 2H2O(g)51.2 g of hydrogen and 392 g of oxygen are placed into the reactor. What is the limiting reagent? H2 or O2 What is the final temperature of the system in degree celsius?
Use only the first decimal points (X.X) for atomic masses. R = 8.314 L*kPa/mole*K . In a reactor at 200.0 kPA and 401 L, hydrogen and oxygen combine by the following reaction:2H2(g) + O2(g) --> 2H2O(g)51.2 g of hydrogen and 392 g of oxygen are placed into the reactor. What is the limiting reagent? H2 or O2 What is the final temperature of the system?
A mixture of Al2O3(s) and CuO(s) weighing 18.371 mg was heated under H2(g) at 1 0008C to give 17.462 mg of Al2O3(s) 1 Cu(s). The other product is H2O(g). Find wt% Al2O3 in the original mixture.
Acetaminophen, a popular drug taken as pain reliever and fever reducer, is produced together with acetic acid from the reaction of 3.05 g 4-aminophenol and 4.1 ml of acetic anhydride. Acetaminophen was extracted at 60% yield. Density of acetic anhydride at 20 C, 1.08 g/ml. Calculate the actual no. of grams of acetaminophen produced. [Determine L.R., E.R.]
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A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density of 1.01 g mL-1. The water temperature was 20 ° C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 mL of O2. (11) Calculate the percent error for the experiment.
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Find the mass of hydrogen gas produced by the reaction of 4.0g Al with excess sulfuric acid by using dimensional analysis. 2Al+3H2SO4-> Al2(SO4)3 +3H2