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Explain a constant electric current deposits 0.365g of silver metal in 12960 seconds from a solution of silver nitrate. Define what is the current? Molar mass of Ag is 107.9
Assume further that as the normal fruit flies die off quickly, a population of the resistant flies increases geometrically (that is, 1, 2, 4, 8 ...) If a new generation occurs every 62 days, in how many days will the fruit fly population be restor..
Find the activation energy barrier for this reaction. What temperature should I use if I want the reaction to have a rate constant that is 10 times bigger than the rate constant found at 600K
Is a 0.15M solution of potassium benzoate C6H5COO-K+ acidic, basic, or neutral? Calculate the pH. The Kb for benzoic acid is 1.5 X 10-10.
If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure. Classify these structures by the hybridization of the central atom.
calculate the energy in joules and calories. required to heat 5.25g of water, from 55 C to 64.8 C
If 20.45 ml of the above standardized base is required to neutralize 20.4 mg of an unknown organic acid, what is the molar mass of the carboxylic acid
a nugget of pure gold of 4.90 grams absorbed heat of 270 joules. determine the final temperature of the au if the
If 6.830 moles of an ideal gas has a pressure of 3.290 × 105 Pa and a volume of 0.105 m3, what is the temperature of the sample in degrees celsius
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.8. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.75 M B(aq) with 0.75 M HCl(aq).
Which of the following statements correctly describes the geometry of the sp3 hybrids for molecules that have SN = 4? a. trigonal planar b. octahedral c. tetrahedral d. linear im pretty sure its c. tetrahedral but i dont know how the "sc=4"part co..
you have made up a solution of 100 mm tris ph 7.0. the pka of tris is8.0. compared to the situation at ph 7.0 about how
how many liters of softened water containing a sodium concentration of 5.8times10-2 sodium by mass have to be consumed
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