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A sample containing 2.00 mol of graphite reacts completely with a limited quantity of oxygen at 25 degrees C and 1.0 atm pressure, producing 481 kJ of heat and a mixture of CO and CO2. Calculate the masses of CO and CO2 produced.
Ice at 0.0° C is mixed with 9.00 102 mL of water at 23.0° C. How much ice must melt to lower the water temperature to 0.0° C
A 10.0 mL aliquot of the solution is titrated with a standard 0.101 M KSCN solution, requiring 7.0 mL to reach the red Fe(SCN)2+ end point. Calculate the percent mass of silver in the sample.
The initial concentration of some weak acid, HA, in an aqueous solution is 0.2530 M, at equilibrium the concentration of HA becomes 0.0957 mol/L. Calculate the Ka of the acid.
A horizontal piston contains 34kg of water that is saturated at 36oC. Heat is transferred to the water until 80% of the water vaporizes.
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 14.0 g of luminol to creating a solution with a total volume of 75.0 mL.
Use the Born-Haber cycle outlined in Section 9.3 for LiF to calculate the lattice energy of NaCl. (The heat of sublimation of Na is 108 kJ/mol and ?Hof = -411 kJ/mol
a s2- ion-selective electrode gave an electrodepotential of e -0.254 v when immersed in a 7.76 10-2 m standard k2s
When 0.047 moles of ammonium sulfate are dissolved in enough water to make 413 milliliters of solution, how many ammonium ions are present?
What is the rate of consumption of isobutylbenzene inside the reactor. What is the flow rate of isobutylbenzene out of the reactor? What is the fractional conversion
a water tower supplies water through the plumbing in a house. a 2.54-cm-diameter faucet in the house can fill a
a galvanic cell znzn2 zn2zn was connected to a dc power supply with current of 1.25 x 10-2 a for 1.15 hours. calculate
The isotope 172Ta undergoes decay by positron emission. After 2 hours , 1/6 of the initial amount of 172Ta remains undecayed. The half- life of the isotope is
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