Prepare a buffer solution
How many grams of dry need to be added to 2.30 of a 0.400 solution of ammonia, to prepare a buffer solution that has a of 8.80? for ammonia is?
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Calculate the molarity of the solution. How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion?
What is the approximate pH of a solution prepared by adding 20 mL of 0.10 M NaOH to 200 mL of 0.10 M HCl?
Two moles of a gas are compressed isothermally and reversibly at 300 K from an initial volume of 10 dm3 to a final volume of 1 dm3. If the equation of state of the gas is P(Vm-b) = RT, with b = 0.03 dm3 mol-1. Calculate the work done on the system
Determine the functional form of Phi(t) and the frequency of a pendulum bob whose mass is m and is attached to a massess rod of length l.
A gas in a sealed container has a pressure of 125 kPa at a tempurature of 30.0 degrees celcius. If the pressure in the container is increased to 201 k Pa, what is the new tempurature?
A volume of water was delivered using a buret and experimentally determined to have a mass of 2.00-g. What was the final volume of water on the buret if the inital was 0.44-mL? [assume the density of water is 1.00g/mL]
Write the expression for the equilibrium constant, Kc, for the following chemical reaction.
Equal mass of water and ethylene glycol are mixed. What is the vapor pressure of this mixture at 100.C? The molar masses of water and ethylene glycol are 18.02 g/mol and 62.07 g/mol.
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