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the activation energy for the decompostion of HI to H2 and I2 is 186 kJ/mol. The rate constant at 555 K is 3.2 x 10^-7 L/mol*s. What is the rate constant at 645 K?
How long would you need to sample from a concentration of 1000 PPM using a flow rate of 50 ml/minute to collect 100 mg of material?
Identify the two important classes of catalysts. Choose a catalyst that exists in the human body. Explain its importance and how it works.
which of the following chemical combinations of the elements would be most exothermic, Na and Cl
What stretches (presence and absence) will distinguish the product (cyclohexene) from the starting material (cyclohexanol)? Give the functional group and wavenumbers
The air in an inflated balloon (defined as the system) warms over a toaster and absorbs 121 J of heat. As it expands, it does 70. kJ of work. What is the change in internal energy for the system.
at 1 atm, how much energy (kJ) is required to heat 81.0g of H2O(s) at -22.0 degrees celcius to H2O(g) at 119.0 degrees celcius?
What are its values of DeltaG of vaporizatoin and DeltaS of vaporization at 61 degrees Celsius?
showing electron flow with arrows, for the acid-catalyzed hydrolysis of ethyl acetate to acetic acid and ethanol- the reverse of a Fischer esterification reaction.
60.0 mL portion of of 1.70 M solution is diluted to a volume of 288 mili litres. A 144-mili litres portion of that solution is diluted using 115 mLili litres of H2O. Determine the final concentration.
Use the Nernst Equation to calculate Ecell at 25 C for electrolysis of aqueous sodium chloride if the concentration of chlorine in the brine solution is 4.5 M and the partial pressure of Cl2 is 0.001 atmospheres.
A 6.50-g sample of copper metal at 25.0 C is heated by the addition of 84.0 J of energy. The final temperature of the copper is ____ C.The specific heat capacity of the copper is 0.38J/g-K.
Zinc is reacted with hydrocloric acid to make hydrogen gas and zinc chloride. when 42.86 g of zinc is added to 40.11g of hydrochloric acid, 63.22g of zinc chloride were collected.
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