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You made a pH 10 buffer by combining 142 mL of 28% NH4OH with 17.5 g NH4Cl. What would have been the pH of the buffer if you had used twice the amount of NH4Cl?
Classify the following compounds and ions as strong acid, weak acid, strong base, weak base, or neutral. For each write the reaction(s) that justify your decision. If a substance is amphiprotic, show both reactions.
If a 1-mole sample of a real gas from a compressed gas cylinder goes from 230 atm to 1 atm and from a volume of 1cm3 to 195cm3, what is the entropy change for the expansion if it is assumed to be isothermal.
consider the following three equilibria occurring simultaneously in solutioncaaq c2o4aq cac2o4sh2c2o4aq haq
Calculate the change in pH when 3.00 mL of 0.100 M HCL(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3 (aq) and 0.100 M in NH4Cl (aq).
What volume of 0.382 M NaOH is needed to reach the equivalence point in the titration of 24.9 mL of 0.0390 M chlorous acid, and what is the name of the salt that is formed during the titration
A container of nitrogen gas has a volume of 82.0 L at a temperature of 303 K. If the container is heated to a temperature of 369 K while remaining at constant pressure, what is the new volume of the gas
most of the sulfur used in the united states is chemically synthesized from hydrogen sulfide gas recovered from natural
How many seconds does it take to deposit 1.63g Ni on a decorative drawer handle when 13.7A is passed thorugh a Ni(NO3)2 solution
How many ATPs are synthesized for every cytoplasmic NADH that participates in the glycerophosphate shuttle in insect flight muscle?
nitrogen gas was collected over water at a temperature of 40 degrees C, and the pressure of the sample was measured at .796 mmHg. if the vapor pressure of water at 40 degrees C is 55 mmHg, what is the partial pressure of the nitrogen gas?
The average radius of a molecule of lyzosome, an enzyme in tears, is 1430 pm. What is it's radius in nanometers.
In an experiment 1.550g of mercury oxide decomposed to give oxygen gas and 1.435g of liquid mercury. What is the empirical formula of mercury oxide
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