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Determine the time (in hours) required to recharge a Ni-Cd battery by converting 2.43 g Cd(OH)2 back to Cd using a charger that supplies 125 mA of current.
a)Calculate the final temperature for Cv,m=3R/2.b)Calculate q for Cv,m=3R/2 .c)Calculate w for Cv,m=3R/2 d)Calculate delta H for Cv,m=3R/2 e)Calculate delta U for Cv,m=3R/2
Many important drugs contain the amine functional group, which makes them basic. Many drugs also contain an amide group, which is effectively neutral. Suggest a way to separate ephedrine, a stimulant and decongestant drug shown below, from phenace..
Trimyristin is one of a number of natural products found in nutmeg, including the one which gives it its characteristic odor. Bases on the chemical properties of trimyristin and the amount of inpurity found when the extracted trimyristin was re-cr..
A gas mixture contains 76% nitrogen and 24% oxygen. If the total pressure is 1.16 atm what are the partial pressures of each component
determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room
a student placed 10.5 of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
using a solution containing 55.0 g of glycerol c3h5oh3 and 250 g of water? what will be the freezing point and boiling
using the periodic table predict thr most stable ion for na mg al s cl k ca and ga. arrange these ions from largest to
The average concentration of calcium ion in seawater is 412 mg of calcium ion per kg of seawater. What is the molarity of the calcium ion if the density of the seawater is 1.025 g/mL?
A system absorbs 192 kj of heat and the surroundings do 120 kj of work on the system. what is the change in internal energy of the system
Calculate ?H° for each of the following reactions using the data in Appendix 4: 4Na(s)+O2(g) ? 2Na2O(s) 2Na(s)+H20(l) ? 2NaOH(aq)+H2(g) 2Na(s)+CO2(g) ? Na2O(s)+CO(g) Explain why a water or carbon dioxide fire extinguisher may not be effective inpu..
the specific heat capacity of zinc is 0.389J/Kg, and that of water near 100 degrees celsius is 4.22J/Kg. Calculate the final temperature reached ny the zinc and water
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