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Calculate how many atoms of potassium A three (3.00) mole sample of K2S would have ?
Calculate the current for diffusion-controlled electrolysis at t=0.1 sec and t over (1) planar and (2) spherical electrode, respectively Given n=1, Co*=1.00 mM (=1.00 X 10-6 mol/cm3), A=0.02 cm2, Do=10-5 cm2/s, and F=96485 C/mol,
manganese makes up 1.3 x 10-4 by mass of the elements found in a normal healthy body. how many grams of manganese
A 4.40 g nugget of pure gold absorbed 289 J of heat. The initial temperature was 21.0°C. What was the final temperature?
Consider the reaction CH3Br(aq) + OH-(aq) ? CH3OH(aq) + Br-(aq). How would each of the following changes affect the rate of the forward reaction? a) addition of OH-? b) decrease in volume of the solution
Write the chemical equation for the formation of CH from H and C atoms. Lone pairs do not need to be included. Then Using the table of bond energies determine the ?H for the above reaction.
Enzyme X is a highly pigmented protein that imparts the characteristic color to certain blue-green algae. It also facilitates a reaction necessary to the survival of this species; we can follow the kinetics of this reaction by measuring the conver..
explain why all the solutions iron iii nitrate and potassium thiocyanate used in this experiment were made in 0.1 m
If 120 of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
Magnesium hydroxide is only very slightly soluble in water. The reaction by which it goes into solution is: Mg(OH)_2 (s) Mg^2+ (aq) +2 OH- (aq)
What geometric figure is represented by these imaginary lines and what is the approximate angle between all possible pairs of covalent bonds in the model
The air in a 5.00-L tank has a pressure of 1.20 atm. What is the new pressure, in atm, of the air when the air is placed in tanks that have the following volumes if there is no change in temperature? a) 1.00 L. b) 2500. mL. c) 750. mL. d) 8.0 L.
Which of the following is not true regarding social development?
determine How many grams of AlCl 3 are formed if 30.0 grams of Hydrogen are produced? It is given that the molar mass of AlCl 3 =133.33 g/mol.
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