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calculate the expected pH value of the buffer system 5mL .1M CH3COOH + 5mL .1M CH3COO-Na+ using the henderson-hasselbalch equation using the pKa values: carbonic acid= 6.37 and acetic acid=4.75
Aluminum reacts with oxygen to make aluminum oxide. If 5.2 moles of aluminum react, how many moles of aluminum oxide are formed. Show work.
Calculate the mass of HONH2 required to dissolve in enough water to make 250.0 ml of solution having a pHof 10.00 (Kb=1.1*10 (-8).
When 5.6 grams of NaCl are dissolved in enough water to create a 125-gram solution, what is the solution's concentration, expressed as a percent by mass?
Create an outline of no more than 10 steps describing how you will regenerate the column, load your sample and collect the hydronium ion released.
What is the solubility of nitrogen in the divers blood at the bottom of the dive? b: If you assume the mass of the divers blood is 5.0 kg, how many moles of nitrogen comes out of the divers blood when he comes to the surface?
Predominant Organic Acids Present in Softwoods such as Pine, A wood chemistry course in which we are asked to explain the hierarchy of the organic wood acids present in softwood species like pine or spruce.
If 17.9 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia.
Calculate the molarity and mole fraction of acetone in a 1.82 molality solution of acetone in ethanol. Density of acetone is .788 g/cm^3. Density of ethanol is .789 g/cm^3. Assume that the volume of acetone and ethanol add.
Explain the chemical reactions that have possibly taken place in his body after the exercise. Discuss possible treatments for the freshman and how the treatment works chemically.
Write the balanced net ionic equation for the following dissolution reaction: Zn(OH)2 in aqueous NaOH
A tank at is filled with of sulfur hexafluoride gas and of carbon monoxide gas. You can assume both gases behave as ideal gases under these conditions.
the heat of fusion of a compound is 126 joules per gram. What is the total number of joules of heat that must be absorbed by 15.0- grams sample to change he compound from solid to liquid at its melting point?
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