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A mixture of 80.0mL of hydrogen and 60.0mL of oxygen is ignited by a spark to form water. a) Does any gas remain un-reacted? Which one? b) What volume of which gas (if any) remains un-reacted
A reaction has a standard free-energy change of -12.30 kJ mol-1 (-2.940 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C.
Suppose that you titrate 50.00 mL of a 0.0200 M Fe3+ solution (buffered at pH = 4.00) with 0.100 M EDTA. For all questions below, I am looking for a nonzero numbers.
A gaseous mixture of O2 and Kr has a density of 1.104 g/L at 435 torr and 300K. What is the percent of O2 in the mixture?
What is the concentration of each of the following solutions? a) The molality of a solution prepared by dissolving 25.0g of H2SO4 in 1.30L of water b) The mole fraction of each component of a solution prepared by dissolving 2.25g of nicotine, C4H1..
It takes 51.0 J to raise the temperature of an 10.2 g piece of unknown metal from 13.0C to 25.0C. What is the specific heat for the metal
Calcium nitrate will react with ammonium chloride at slightly elevated temperatures, as represented in the equation Ca(NO3)2(s) + 2NH4Cl(s) ? 2N2O(g) + CaCl2(s) + 4H2O(g). What is the maximum volume of N2O at STP that could be produced using a 2.4..
Suppose that a 2.00-L metal bottle that contains air at 113K and 2.5 atm pressure is sealed off. If we inject 60.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle?
How many grams of FeSO4.(NH4)2SO4.6H2O (MW = 392.14) must be dissolved and diluted to 250.0 mL to prepare an aqueous solution that is 10.00 ppm Fe2+
Write a balanced reaction for the complete combustion of ethanol (C2H5OH) in oxygen, using the smallest integer coefficients. Then add up the total of all of the coefficients from both sides of your equation and enter that number as your answer.
A piece of lead is placed into a graduated cylinder. The level of the liquid rises from 235 to 305 mL. What is the mass in grams of the lead if the density of lead is 11.3g/cm3?
need to generate ammonia from ammonium chloride to use in a reaction. should you use sodium bicarbonate or sodium carbonate?
NaHCO3 is added until the fizzing due to the formation of CO2(g) ceases. If 27.0 mL of 6.0 M H2SO4 was spilled, what is the minimum mass of solid NaHCO3 that must be added to the spill to neutralize the acid?
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