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Dibutyl succinate, an insect repellent contains only O, H and C and was found to have an experimentally determined molar mass of 231 g/mol. When a 2.5 g sample was burned in excess oxygen, 3.251 L of gas were collected at 0.98 atm and 25 oC. In addition, 2.157 ml of H2O (density = 0.997 g/mol) were also collected. What are the % weight of C, H and O in the sample, the empirical formula and the molecular formula.
At this temperature, calculate the number of moles of NO2(g) that must be added to 2.88 mol of SO2(g) in order to form 1.20 mol of SO3(g) at equilibrium.
Place the following gases in order of increasing average molecular speed at 25°C. Ne, HBr, SO2, NF3, CO
What is the theoretical yeild of NO2 from the reaction of 43.9 g of NH3 with 258 g of O2?
A solution is made by mixing 42.0 mL of ethanol, C2H6O, and 58.0 mL of water. Assuming ideal behavior, what is the vapor pressure
Calculate the freezing point and boiling point of the solution. Constants may be found here. benzene C6H6 Kf = 5.12 *C/m Freezing Point = 5.49 *C Kb = 2.53 *C/m Normal boiling point = 80.1 *C
what concentration in ppm would it constitute? The effective volume of the earth's atmosphere is about 4.2 billion km^3, and take the average pressure to be 550 mm Hg and the average temperature to be -10 degrees C. The molar mass of air is 29 g/m..
Identify the reagents you would need to make the following substance via Grignard synthesis, and briefly describe your synthetic strategy.
Based on the value obtained in the three heating above, do you think the student should have confidence in his results? why? what do you think he should do to be more confident in his result
A sample of chlorine gas at a pressure of 420 mm Hg and in a volume of 3.50 L was heated from 18.0oC to 45.0oC after being transferred to a container of volume 2.35 L. The pressure in this new container should be about
Determine the molar mass of the substance if 120.0 grams of a pure sample contained 24.0 mol of the substance. Express your answer in g/mol.?
The equilibrium constant for a reaction is 0.48 at 25 o C. What is the value of ?G o at this temperature?
How do you find the maximum critical heat flux of water at 1.25 bar? It has to do with nucleate pool boiling.
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