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indicate whether each of the following solutions are acidic, basic, or neutral at 25 degrees C: a)[H3O^+]=6.0x10^-12 M b)[H3O^+]=1.4x10^-4 M c)[OH^-]=5.0x10^-12 M d)[OH^-]=4.5x10^-2 M
A Solution is made by dissolving 8.5 grams of NaOH in 2.3 L of water. What is the molarity of the solution?
Calculate k, Calculate also how long it would take for half of A to react. assume pseudo first order with k'=k[OH-], since [OH-] is in great excess.
A furnace is burning coal at the rate of 950,000 kg of coal/day. The coal contains 5.5% ash and 99% of that ash is collected in the air pollution control (APC) device downstream from the furnace
What is the silver ion concentration for a saturated solution of Ag2CO3 if the Ksp for Ag2CO3 is 8.4 x 10^-12
A solid sample containing some Fe 2+ ion weighs 1.062g. It requires 24.12 mL 0.01562 M KMno4 to titrate the Fe2+ in the dissolved sample to a pink end point.
A quantity of N2 occupies 62.2 L at a particular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
What are the mole fractions of ethanol, C2H5OH, and water in a solution prepared by mixing 55g of ethanol with 45g of water
A buffer is made by combining 3.50 L of 0.200M butylamine, C4H9NH2 with 7.50L of 0.100M butylammonium chloride, C4H9NH3Cl. Assuming that volumes are additive
What is the specific enthalpy and specific volume of steam at 350 c and 60 bar? Is this steam super heated or saturated?
how many grams of Cu2S could be produced if 100.0g of copper is heated with 50.0g of sulfur? what is the amount of excess reactant?
The standard free energy of the reaction represents the drive the reaction has under standard conditions to move toward equilibrium. Express the equilibrium constant numerically using three significant figures.
A mineral containing iron(II) sulfide but no other sulfides is treated with excess hydrochloric acid to produce hydrogen sulfide. If a 3.15 g sample of the mineral yields 448 mL of hydrogen sulfide gas
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