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What is the pH of a solution that results when 0.010 mol of HNO3 is added to 500mL of a solution that is 0.10M in aqueous ammonia and 0.20M in ammonium nitrate. Assume no volume change and the Kb for NH3 =1.8*10^-5
When aluminum reacts with concentrated hydrochloric acid, hydrogen gas evolves. The hydrogen is collected by displacement of water at 22ºC at a total pressure of 750 torr.
How many grams of aluminum metal must react with aqueous sodium hydroxide to produce 7.50 L of hydrogen gas at 12.5 degrees Celsius and 740 torr if the other product is aqueous Na3AlO3. 2 Al (s) + 6 NaOH (aq) ----> 3 H2(g) + 2 Na3AlO3(aq)
Three solutions 61.0 mL of 0.2 M KNO3; 63.0 mL of 0.3 M Ca(NO3)2; and 69.0 mL of 0.385 M KCl were poured together to make one new solution.
A reaction mechanism involving three steps is shown below. Identify all of the catalysts in the following mechanism.
what is the functional groups and molecular formula of aspartame, the NH2 is below the 3rd C and the CH2 is below the 5th C
calculate the activation energy for a reaction if its rate constant increases from 10 to 45 s as the temperature increases from 298 to 315 k .
The flask was then shaken until the solution was uniform. A 60.0ml- sample of this glucose solution was diluted to 0.500 L . How many grams of glucose are in 100.ml of the final solution?
Plot pH values as a function of volumes of added KOH and suggest appropriate indicators for the titration.
A mixture of pentane and hexane has a vapor pressure of 258 torr. The standard vapor pressure of pentane is 425 torr. What is the mole fraction of pentane?
a solution of .64g adrenaline in 36.0 g of CCl4 elevates the boiling point by .49 degrees C. What is the molar mass of adrenaline.
What is the driving force for the rearrangement of intermediate carbocations during the dehydration of alcohols
how many phosphoester bonds and phosphoanhydride bonds are in adenosine
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