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If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
A balloon is filled to a volume of 7.00 x 102 mL at a temperature of 20.0 oC. The balloon is then cooled at constant pressure to a temperature of 1.00 x 102 K.
Calculate the amount of heat liberated (in kJ) from 421 g of mercury when it cools from 91.0°C to 11.0°C.
When M2S3(s) is heated in air, it is converted to MO2(s). A 4.500-g sample of M2S3(s) shows a decrease in mass of 0.209 g when it is heated in air. What is the average atomic mass of M.
A student is concentrating a solution having a polypeptide of modest molecular weight by pressure filtration through a membrane. The solute concentration on the feed side of the membrane is 0.10 M and the temperature is twenty five degree celsius.
Compute the final pressure in the tank if nothing else is altered in the surroundings. (The two gases do not react)
Compute the mass of salt required to bring the freezing point of 200 mL of H 2 O from 0 degrees C to -5 degrees C.
Which of the following compounds will produce an acidic solution when dissolved in water? What is the OH- (hydroxide ion) concentration in a solution with pOH = 2.45.
How should a professional emergency responder be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
The heat of solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH4NO3 is added to 40.0 mL of water in a calorimeter at 23.5°C, what is the minimum temperature reached by the solution.
A dog sits 1.07 m from the center of a merry go-round with an angular speed of 1.44 rad/s. If the magnitude of the force that maintains the dog's circular motion is 41.2 N.
Calculate the change in Gibbs free energy for each of the following sets of ΔH ° rxn , ΔS ° rxn , and T .
How would you expect a titration curve of both the solutions and what will happen if HCl is added to the H 2 O and sodium acetate buffer ?
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