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The rearrangement of methyl isonitrile (CH3NC) to acetonitrile (CH3CN) is a first order reaction and has a rate constant of 5.11 x 10^-5 at 472K. Initial concentration of CH3NC is 0.0340M. How many minutes does it take for the CH3NC concentration to drop to 0.0300M?
What mass of rm NaOH is needed to precipitate the rm Cd^{2+} ions from 35.0 mL of 0.540 M rm Cd(NO_3)_2 solution?
The temperature of a lead fishing weight rises from 15 oC to 45 oC as it absorbs 22.5 kJ of heat. What is the mass of the fishing weight in grams? Heat capacity of lead is 0.128 J/g oC.
A metal sample weighing 40.0 g and at a temperature of 99.1 C was placed in 38.6 g of water in a calorimeter at 25.0 C. The calorimeter reached a maximum temperature of 32.8 C.
Assess the feasibility of the reaction: N2H4 (g) + 2OF2 (g) ® N2F4 (g) + 2H2O (g) by determining each of the following quantities of this reaction at 25 oC.
Super-green is an indicator with a Ka of 1.6 × 10-7. The acid form is yellow and the base form is blue. Awesome-orange is an indicator with a Ka of 5.0 × 10-5.
Saturated aqueous sodium chloride(d=1.2g/mL) is added to the following mixtures in order to dry the organic layer. Which layer is likely to be on the bottom in each case?
Which of the following molecules is polar?
A 125 ml sample of a solution that is 2.6x10^-3M in AgNO3 is mixed with a 230 ml sample of a solution that is 0.10M in NaCN. After the solution reaches equilibrium, what concentration of Ag+ remains?
What mass of Al2O3 in grams can be made by reaacting 4.6 g AL with excess oxygen?
How to calculate ion mobility of DNA as well as single molecule of dNTP? This calculation would be further used for conductivity of DNA or dNTP in solution.
which anions generally form percipitates? what are the exceptions?
what is the molarity of an aqueous solution containing 360g of glucose in 2.0L of solution.
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