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Formic acid (HA) has a Ka value of 1.8 x 10^-4. A student needs t prepare 20.0 mL of a buffer with pH=3.60 from stock solutions of 0.10 M HA and 0.10 M NaA (where "A-" represents the formate ion). What volumes of the 0.10 M HA and 0.10 M NaA solution should be mixed to prepare the buffer?
how many liters of oxygen will be produced if 162 grams of aluminum chlorate is decomposed
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6 Cl2(g) → 4 PCl3(g) . A sample of PCl3 of mass 298 g was collected from the reaction of 75.37 g of P4 with excess chlorine.
calculate the pH formed by mixing 100 mL of 0.20 M HCL with 50 mL of 0.30 M NaOH.
Water is added to 25.0 mL of a 0.776 M KNO3 solution until the volume of the solution is exactly 500 mL. What is the concentration of the final solution.
what is the mass, in kilograms, of Avogadro's number of olympic shot put balls if each one has a mass of 16lb? How does this compare with the mass of Earth, 5.98x10^25 kg.
how many moles of hydrogen gas (H2) can be liberated from 104 mol of magnesium hydride if the process operates on 77% efficency?
potassiumm chlorate (KClO3) decomposes to form potassium chloride and oxygen gas. if 5.4 moles of potassium chlorate decompose, how many moles of oxygen could be produce.
How many moles of ethane (C2H6) would be needed to react with 62.3 grams of oxygen gas?
What do the density/potential plots demonstrate about bond order?
calculate the volume of water needed to dilute the anti-freeze from 0.20M in 0.260 litres to 0.13M.
Acetylsalicylic acid (aspirin), HC9H7O4, is the most widely used pain reliever and fever reducer in the world. Find the pH of 0.018 M aqueous aspirin at body temperature (Ka at 37°C = 3.6 10-4).
What volume of methanol is formed if 3.11×1011 of methane at standard atmospheric pressure and 25 is oxidized to methanol
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