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An endothermic third-order reaction 3A ? 2B + C is carried out in a batch reactor. The reaction mixture is heated to 400°C. The reaction then proceeds adiabatically. During the heating period, 10 mol-% of A is converted. From this instant on, what is the time required to reach a conversion of 70 percent?
What are the names and principle differences in the two models of substrate/enzyme complex formation?
Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 1.00-L metal bottle that contains air at 98K and 2.0 atm pressure is sealed off. If we inject 60.0 mL of liquid helium and allow the entire system to warm to room temperature
the iron in a 1.0000g rock sample is dissolved reduced to fe2 and titrated with dichromate. if the titration requires
When hydrochloric acid of 200 mL was mixed to a small piece of CaCO3 in the same calorimeter, the temperature increased by 4.25 degree celsius. determine the heat output for this reaction?
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m3 (assume that the volume is well mixed throughout).
Calculate the pH of the solution that results when 40.0 mL of 0.12 M NH3 is a) Diluted to 20.0 mL with distilled water. b) Mixed with 20.0 mL of 0.25 M HCl c) Mixed with 20.0 mL of 0.30 M HCl solution d) Mixed with 20.0 mL of 0.20 M NH4Cl
what pressure of O2 in a 500ml container at 30C is necessary for a reaction with 1.00g of H2 to produce H2O?
Some athletes have as little as 3.00 body fat. If such a person has a body mass of 45.0 , how many of body fat does that person have
a 27.2 ml sample of a solution of rboh is neutralized by 16.12 ml of a 2.047 m solution of hbr. what is the molarity of
Explain which would not be a way a substituent on a benzene ring could donate or withdraw electrons when considering it as an activator or deactivator
A 50.00-mL sample of 0.100 M KOH is titrated with 0.152 M HNO3. Calculate the pH of the solution after 52.00 mL of HNO3 is added.
Three 5 L flasks, fixed with pressure gauges and small valves, each contain 4 g of gas at 273 K. Flask A contains H2, flask B contains He, and flask C contains CH4. Rank the flask contents in terms of the following properties.
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