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a certain buffer solution contains equal concentration of X^- and HX. Kb for X - = 10 ^-10 . calculate PH of buffer
What is the minimum concentration of Mg2+ required to begin precipitating Mg(OH)2(s) in a solution of pH 10.82? For Mg(OH)2
a bomb calorimeter whose components have a heat capacity of 6.66 kjdegc is filled with 913 g of water. the amount of
A gas is placed in a storage tank at a pressure of 20 atm at 20.3 C there is a small metal plug in the tank made of a metal alloy that melts at 125C what is the maximum pressure in the tank?
if the aluminum block is initially at 25 what is the final temperature of the block after the evaporation of the
Compound "A" (C6H14) gives three dissimilar monochlorides when subjected to photochemical chlorination. One of these monochlorides gives no reaction when treated with KOH/alcohol.
Your answer is correct. What is the overall order of the reaction. First order none of these fourth order third order second order Correct- Your answer is correct. What is the value of the rate constant for the reaction
How many mL of 2.00 M Na2CO3 is diluted with water to prepare 300 mL of 0.500 M Na2CO3
what is the volume of 235 ml of a sample of gas at 53.0degc and 740. mm hg if the conditions are adjusted to stp?
A hard water sample contains 0.0085% Ca by mass (in the form of Ca2+ ions). What mass of water contains 1.2 g of Ca
If 250mL of methane, CH4 effuses through a small hole in 48 s, the time necessary for the same volume of helium to pass through the hole will be?
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places.
Hydrochloric acid can dissolve calcium carbonate. Predict the balanced chemical reaction. How much HCl is required to dissolve 24.2g of calcium carbonate. The density of HCl is 1.149 g/Ml.
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