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Beginning with 150.0 mL of 0.175 M ammonia, determine the solution's pH after an additional 25.0 mL of 0.400 M ammonium chloride is added to the solution (be sure to account for the change in volume at each step).
What volume of 3 M H2SO4 is needed to neutralize all of the disodium salicylate and the excess NaOH (2.17 mL excess) present after the initial reaction?
A piston has an external pressure of 11.0 bar . How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.570 liters.
SLIGHTLY LESS than 100 degrees Celsius, but the final boiling point was AT 100 degrees Celsius. Why should the boiling point rise as the distillation progresses?
sample of an oxide of tin was heated in the ari and 2.842 grams of tin (IV) oxide was obtained. What was the formula for the original oxide of tin?
The volume of a syringe is 0.5 mL and the pressure is 3 atm, when the plunger is at the bottom of the syringe. The syringe is then sealed and forced to the 10 mL mark. What is the pressure inside of the syringe?
Draw the crossed aldol condensation product formed between benzaldehyde and acetone
A liquid substance has a vapor pressure of 450.0 mmHg at 262.0 degrees celsius and 760.0 mmHg at 325.0 celsius. a) what is the heat of vaporization of this substance? b) what is its normal boiling point?
The Eriochrome Black T indicator is mistakenly omitted. what is the color of the analyte (standard Ca^2+ solution)? Describe the appearance of the analyte with the continued addition of the Na^2H^2Y solution? Explain?
Calculate the change in pH when 9.00 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).
The normal melting point of benzene is 5.5 degrees Celsius . For the process of freezing, what is the sign for each of the following: a) Delta Hsys b) Delta Ssys c) Delta Gsys at 5.5 degrees Celsius d) Delta Gsys at 0 degrees Celsius
Calculate the mass of TRIS to use when it is mixed with 100 mL of 0.50 M HCl to prepare 1.00 L of buffer of pH=7.40. Also calculate the total concentration of the buffer.
If the acid dissociation constant, Ksuba, for an acid HA is 8 x 10^-4 at 25 degree C, what percent of the acid is dissociated in a 0.50 M solution of HA at 25 degree C?
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