Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- Determination of the Universal Gas Constant Postlab 1. An evaluation of Rwas performed using the procedures outlined in this exercise, The barometric pressure was 735 torr and the temperature was 21.5 "C. The volume of H2(9) collected was 32.7 mL. The calculated value of Rwas 0.0817 L'atm/mol-K. a. How many grams of Mg metal were used in this determination? 0.0316 70.361 b. If the correction for the vapor pressure of water had not been performed, what would be the calculated value of R? Incorrect c. If the syringe volume had been incorrectly read, resulting in a calculated H, volume of 30.6 mL, what would be the percent error in the calculated value of Rwith respect to the originally calculated value (0.0817 L-atm/mol·K)? 6.4 %arrow_forward6-25. A mixture of gases contains 66.0 g CO2, 2.02 g of H₂, and 16.0 g of O₂. If the total pressure of the mixture is 725 torr, what is the partial pressure of each gas? 6-26. Air, by weight, is essentially a mixture of 79% N₂ and 21% O₂. Calculate the partial pressure of each gas at a total pressure of 99 kPakPa.arrow_forwardWhat is the pressure (in bar) in a 4.00 L tank with 24.0 grams of oxygen gas at 350.0 K? R = 0.08314 L・bar/mol・K.arrow_forward
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