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Draw elctron dot structures for the following elements. Na, Al, Cl Ar. Which are the most chemically reactive? Which are the leastchemically reactive?
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.
Zinc and sulfur react to form zinc sulfide by the equation shown below. How many grams of ZnS can be formed when 12.0 g of Zn reacts with 6.50 g of S? (Atomic mass: Zn = 65.38, S = 32.06).
An aqueous solution contains 545 g of ThCl3. If the solution is electrolyzed using inert electrodes, calculate the current needed to remove all of the thorium from the solution in 5.00 hours.
the standard free energy of activation of a reaction a is 77.7 kj mol-1 18.6 kcal mol-1 at 298 k. reaction b is one
question for a given equilibrium reaction at 25 degrees celsius the equilibrium coefficient is 1.5x10 -4. if the value
Describe six physical and six chemical changes. Explain why each is a physical or chemical change.
A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66g. It is then filled to a pressure of 0.967atm at 31 degrees C with a gas of unknown molar mass and then reweighed to give a new mass of 153.81g. What is the mola..
a balloon is floating around outside your window. the temperature outside is 15 degrees celsius and the air pressure is
The concentration of glucose in blood is approximately 90 mg/100 mL. What is the weight/volume percent concentration of glucose. what is the molariy of glucose
The Keq for imidazole binding to hemoglobin can be determined from the following linear equation: 1/?A100Keq * 1/[lm +1/?A100=(1/?A) a. For the plot of the reciprocal of the change in absorbance versus the reciprocal of the imidazole concentration..
the gpr ground penetrating radar produced an electromagnetic radiation that had a frequency of 2.00 x 102 mhz.
when air pollution is highozone can reach .60 ppm. how many molecules of ozone are present per liter of polluted air if
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