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For each of the following salt solutions, indicate whether the solution will be acidic, basic or neutral. Then using data given below, calculate [OH-] or [H3O+] and pH for each solution. (a) 0.19 M NaF (Ka (HF) = 5.0 x 10-04) (acidic, basic, or neutral) [OH-] = pH = (b) 0.80 M NH4Cl(Kb (NH3) = 2.0 x 10-05) (acidic, basic, or neutral) [H3O+] = pH =
What is the molarity of a solution prepared by diluting 25 drops of 0.35 M K2SO4 solution with 75 drops
The amount of boiling water required to raise the temperature of 25 kg of water in the bath to body temperature is 4.8 kg. In this process, the heat lost by the boiling water is equal to the heat gained by the room-temperature water.
A reverse osmosis plant desalinates 5x10^6 L/day of feedwater containing 1500mg/L of salts yielding 3x10^6 L/day of product water with 75 mg/L of salt. What would the salt concentration be in the brine?
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container.
When 0.047 moles of ammonium sulfate are dissolved in enough water to make 413 milliliters of solution, how many ammonium ions are present?
Write the net ionic equation for the reaction. Calculate the equilibrium constant for the reaction.
A proton in a linear accelerator has a de Broglie wavelength of 144 pm. what is the speed of the proton?
How many joules are required to raise the temperature of 80g of iron from 20 degrees celsius to 70 degrees celsius?
Calculate the final temperature of the solution assuming no heat is lost to the surroundings, the final mixture has a mass of 100.0 g and the solution has a specific heat capacity of 4.18 J °C-1 g-1
the mineral greenockite is a yellow sulfide of cadmium that is 78.0% cadmium and 22.o% sulfer. determine the emipirical formula of greenockite.
4-methoxybenzoic acid is a weaker acid than benzoic acid, but methoxyacetic acid is a stronger acid than acetic acid. Explain this apparent contradiction.
you have 100 mL graduated cylinder containing 50 mL of water. you drop a 154 g piece of brass (d= 8.56 g/cm3) into the water. how high does the water rise in the graduated cylinder?
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