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If 18.6 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
What is the pH of the solution obtained by mixing 50.00 mL of 0.1250 M HOAc and 25.00 mL of 0.1000 M NaOH
Many household cleaning products contain oxalic acid, H2C2O4, a diprotic acid with the following dissociation constants
Four anions were confirmed present by the formation of a precipiate. Which are so confirmed? Write a formula and indicate the color
Write a balance equation for each of the following reactions and identify the type of reaction: a) Solid potasium chlorate is heated to form solid potassium chloride and oxygen gas; b) Carbon monoxide gas and oxygen gas combine to form carbon diox..
calculate the percentage of empty space in 1 mol of water at25 celcius. obtain the density. the volume of amolecule of
of the metal ions we tested in the flame, sodium gave the brightest and most persistent color. Do you think that if a mixture of potassium and sodium were burned in a flame, the gross color of potassium could be detected in the presence of sodium
For the titration of 25.0 mL of 0.20 M hydrofluoric acid with 0.20 M sodium hydroxide, determine the volume of base added when pH is 2.85
10.0 mL sample of aqueous HCL requires 32.34 mL of 0.108 M NaOH to reach the endpoint. What is the molar concentration of HCL. the equation for reaction is NaOH+HCl ..... NaCl + H2O
2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) Heating a 1.7184-g sample of impure NaHCO3 gives 0.196 g of CO2. What was the mass percent of NaHCO3 in the original 1.7184-g sample?
What are buffers? What are the two components of a buffer? Derive the Henderson-Hasselbalch equation from the Ka expression. Which of the following pairs of chemicals will produce a buffer?
Copper metal is purified by electrolysis. How much copper metal could be produced from copper(II) oxide by applying a current of 10.0 amps at the appropriate negative potential for 12.0 hours
a sample of gas is collected over water at a temperature of 35.0c when the barometric pressure reading is 707 torr.
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