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2.51 correct Question 12 0/2 pts How many butane molecules are in 32.4 liters of C4H10...
Not yet graded/5 pts Question 13 Free Response For questions A and B. A hydrocarbon containing 85.7% of carbon and 14.3% of hydrogen was burned in a rigid, enclosed box with the pressure of 715 mmHg at 95°C and an oxygen volume of 4490 mL. At the end of the reaction, the temperature cooled down to 0°C. Molar mass of the hydrocarbon is 70.0 g/mol. A. What is the amount of O2 reacted in grams? B. What is the yield...
Question 12 How many butane molecules are in 2.4 liters of C4H10 gas at STP?
Free Response For questions A and B. A hydrocarbon containing 85.7% of carbon and 14.3% of hydrogen was burned in a rigid, enclosed box with the pressure of 715 mmHg at 95°C and an oxygen volume of 4490 mL. At the end of the reaction, the temperature cooled down to 0°C. Molar mass of the hydrocarbon is 70.0 g/mol. A. What is the amount of O, reacted in grams? B. What is the yield of H20, in grams, after the...
0/2 pts Incorrect Question 8 What is the term for the pressure exerted by gas molecules in the air? Vapor pressure Partical pressure Barometric pressure Gas pressure Not yet graded/5 p Question 15 Free Response Calculate the moles of carbon dioxide produced at 22°C and 3 psi when 1.41 g of calcium carbonate reacts with 15.0 mL of 2M hydrochloric acid. Your Answer: 0.123 L
Question 14 Not yet graded/2 pts A gas with a volume of 50 mL when pressure is 15 atm and the temperature is 298K. What is the pressure when the gas increased to 150 mL at 298K? Your Answer: 5 atm Question 15 Not yet gra led/5 pts Free Response Calculate the moles of carbon dioxide produced at 22°C and 3 psi when 1.41 g of calcium carbonate reacts with 15.0 mL of 2M hydrochloric acid. Your Answer: 0.123 L
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Question 22 2 pts How many molecules of glycerol (C3H803) are present in a 0.5 M glycerol solution? o 1x 1023 O 0.5x6.02 x 1023 92/2 x 6.02 x 1023 0.5x6.02/92 x 1023 6.02 x 1023 Question 19 2 pts Carbonic acid (H2CO3) serves as a buffer in human blood. Carbonic acid is a weak acid that dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). Thus, H2CO3-+ HCO3 + H+. Therefore, a decrease in...
0/ 1 pts Question 2 During a certain titration, 35.0 mL of 0.175 M aqueous sulfuric acid was required to exactly neutralize 49.0 mL of sodium hydroxide. Determine the molarity of the base. H2SO4 (aq) + 2NaOH(aq) + 2 H2O (0) + Na2SO4 (aq) [balanced] 0.125 M 6.00 x 10 M 0.250 M 0.175 M 0.600 M 2ct Question 6 0/1 pts Calculate the pressure exerted by 5.12 grams of chlorine gas in a 850 mL sealed flask at 27.0°C....