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At a certain temperature, the pH of a neutral solution is 7.83. What is the value of Kw at that temperature?
Draw a circuit diagram that subtracts two inputs signals and then amplifies the subtracted signal
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 3.00 mL of a 11.7 micrograms/mL solution of Co
The following is a first order reaction with a rate constant of 2.98*10>-3s-1: SO2CL2>>>>SO2+CL2. What is the half life for the reaction?
Zinc metal can be obtained from zinc oxide (ZnO) by reacting the oxide with the element carbon. The products of the reaction are Zn and CO2.
A sample of 5.20ml of diethylether (C2H5OC2H5; density=0.7134g/ml) is introduces into a 6.40L vessel that already contains a mixture of N2 and O2 whose partial pressures are PN2=0.751atm and PO2=0.209atm
Calculate the final temperature of 32 mL of ethanol initially at 11 degrees C upon absorption of 562 J of heat.
Determine the calorimeter constant or eat capacity, for this calorimeter if the specific heat for water= 4.184 J/goC.
Identify the rate determining step, reaction intermediates and the experimental rate law (intermediates can not be in the rate law)
A mixture of CS2(g) and excess O2(g) is placed in a 1.00 L reaction vessel at 100.0 degrees celcius and a pressure of 3.00 atm. A spark causesthe CS2 to ignite
hydrogen gas was collected over water in a eudiometer at 26 degrees c when the atmospheric pressure was 726 mm hg. What was the pressure of the hydrogen gas?
A graduated cylinder contains 18.0 m/L of water. What is the new water level after 35.6 g of silver metal with a density of 10.5 g/mL,is submerged in the water?
How much heat is absorbed when 5.53 mol of NH4NO3 solid is dissolved in water? (Heat of soluton = 25.7 kJ/mol)
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