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Question- You have a buffer solution composed of 4.00 mol of acid and 2.25 mol of the conjugate base. If the pKa of the acid is 4.10, what is the pH of the buffer?
State your answer by means of two significant figures.
Calculate the energy required to heat 1.30 kg of ethane gas (C2H6) from 27.0°C to 78.0°C first under conditions of constant volume and then at a constant pressure of 2.00 atm. Calculate ?E, ?H, and w for these processes
Gallium has two common isotopes Ga-69 and Ga-71. Suppose we wanted to use the Ga-71 isotope for some reason, and obtained a pure 6.0g sample of Ga-71.
0.90 g of hydrogen chloride hcl is dissolved in water to make 2.5 l of solution. what is the ph of the resulting
Determine whether each of the following compounds is ionic or covalent and draw an appropriate lewis structure.
An environmental chemist sampling industrial exhaust gases from a coal-burning plant collects a CO2-SO2-H2O mixture in a 21-L steel tank until the pressure reaches 850 torr at 45oC.
A voltaic cell consist of an electrode composed of Sn(s) in a 1.0M Sn2+ ion solution as well as another electrode composed of Zn(s) in a 1.0 M Zn2+ ion solution, connected by a salt bridge. Compute the standard potential for the voltaic cell at 29..
What half-reaction will occur at the anode in the electrolysis of an aqueous solution of gallium chloride (GaCl3)
A patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution. How many mL of the drug should the patient receive?
Question- What is the pH of the resulting solution if 40.0mL of 0.10M CH3CO2H is titrated with 10.0mL of 0.10M NAOH. Assume that the volumes of the solutions are additive. Ka = 1.8 x 10^-5 for CH3CO2H.
nbsp25.0 ml of ethanol density 0.789 gml initially at 5.4degc is mixed with 34.6 ml of water density 1.0 gml
.493g of H2SO4 is reacted with a .568 M solution of NaOH to make sodium sulfate and water. How many liters of H2SO4 will react with .633 L of the NaOH solution.
Compute the equilibrium concentrations of each ion in the final solution resulting from the mixing of 40.00mL of 0.0450 M MgI2 and 60.00mL of
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