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A scientist wants to make a solution of Na3PO4 for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 725 mL of a solution that has a concentration of Na+ ions of 0.800 ?
What volume of 0.240 M K2S solution is required to completely react with 195 mL of 0.155 M Co(NO3)2.
the piston of an internal combustion engine compresses 434 ml of gas. the final pressure is 15 times greater than the
What is the magnitude of the electric field amplitude associated with the beam and the corresponding photon density per cm3?
what is the pH of 1.0 L of a buffer that is .11M HNO2 and .150M NaNO2. what is the pH of the buffer after adding 1.0 mL of 12M HCl. pH of original buffer
how many moles of excess reactant are present when 2.90*10^2 ml of .182 M sulfuric acid reacts with .423 L of .170 M sodium hydroxide to form water and aqueous sodium sulfate?
Determine the molarity of a solution prepared by dissolving 4.50 mol of NH4Cl in sufficient water to make 2.00 L of solution.
A bicycle tire is filled with air to a pressure of 611 kPa at a temperature of 19 degrees C. Riding the bike on a hot day increases the temperature of the tire to 58 degrees C.
What concentration of aqueous NH3 is necessary to just start precipitation of Mn(OH)2 from a 0.020 M MnSO4? Kb for ammonia 1.8 x 10^-5, Ksp for Mn(OH)2 4.6 x 10^-16.
nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.14% g/ml. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500 M HNO3.
Consider the titration of 88.0 mL of 0.146 M Ba(OH)2 by 0.584 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added.
what is the hydrogen ion concetration of a solution that has a pH of 4.7
calculate the concentration of rm o2 if kc 270 for the reaction2rm so2 left g right rm o2 left g right
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