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Give the percent yield when 28.16 g of CO2 are formed from the reaction of 5.000 moles of C8H18 with 4.000 moles of O2. 2C8H18 + 25 O2→ 16 CO2+ 18 H2O
A particular reaction is spontaneous at 450K. The enthalpy change for the reaction is 34.5 kJ. What can you conclude about the sign and magnitude of the standard entropy change for the reaction?
A pound of coffee beans yields 30 cups of coffee (4 cups = 1 q). How many milliliters of coffee can be obtained from 1 g of coffee beans.
a gas mixture contains helium and oxygen at respective partial pressures of 255 torr and 0.450 atm. what is the total
Two important industrial chemicals, ethene, C2H4, and propene, C3H6, are produced by the steam (or thermal) cracking process: Draw a Lewis structure
A sample of an unknown peptide undergoes a single round of Edman degradation, which liberates ATZ-Gly. Another sample of the peptide is treated with trypsin, and a third sample is treated with chymotrypsin. The table below shows the fragments.
Find the pH and the concentration of each of the species of lysine in a solution of .010M lysine monohydrochloride (lysine-HCl)
Calculate the final pressure of a gas if a 953-mL sample of the gas at 1.25 atm and 50.0 degrees Celsius is changed to 1.55 L at 75.0 degrees Celsius.Be sure to include units and correct significant figures
Explain if the heat capacity of the calorimeter and its contents was 24.571 Joule / degree C, from the data above, Define what is the value for burning 1 mole of the gas
What does delta S of a chemical equation tell you about the reaction? For example, a positive delta H would tell you that the reaction is endothermic, or a positive delta G would tell you the reaction is non-spontanous. Does the delta S value give..
The threshold frequency of dislodging an electron from a zinc metal surface is 8.54x10^14 Hz. Calculate the minimum amount of energy required to remove an electron from zinc surface.
when substitutionally incorporated into 1 kg of silicon will establish a charge carrier density of 3.091times1017
How many molecules of oxygen react with 133 molecules of acetylene (HCCH) to produce carbon monoxide and water
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