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The following reaction takes place at a certain elevated temperature:
Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(s)
What is the percent yield of iron if 50.1 g Fe2O3in excess CO produces 19.5 g Fe? The M.W. of Fe2O3is 159.7 g/mol and the M.W. of CO is 28.01 g/mol.
Titanium (f=6.94 x 10-19 J) and silicon (f=7.77 x 10-19 J) surfaces are irradiated with UV radiation with a wavelength of 233 nm. Explain what is the wavelength (nm) of the electrons emitted by the titanium surface
Calculate the volume of 1M solution of HCl needed for 1 unit shift of the pH of thhe following solutions:
How many vinylic hydrogens are there in 1-ethylcyclohexene? A. one B. two C. three D. four
What types of bombs were dropped on Hiroshima and Nagasaki, resulting in Japans surrender at the conclusion of WWII? What isotopes were used in the bombs? What were the long term effects of these bombs?
a piece of sodium metal reacts completely with water as follows.2 nas 2 h2ol 2 naohaq h2gthe hydrogen gas generated
calculate the amount of energy in kilojoules needed to change 117g of water ice at -10degrees celcius to steam at 125
Suppose a 500 mL solution contains 0.50 millimoles of Co(NO3)2, 100.0 millimoles of NH3, and 175.0 millimoles of ethylenediamine. What is the concentration of Co 2+ (aq) in the solution?
The temperature of the water rose to 23.639oC. CalculateH (in kJ/mol NaNO3) for this reaction. Assume the specific heat of the final solution is 4.18 J/goC; the density of each solution is 1.00 g/mL; and the addition of solid does not appreciably aff..
Fission of one mole of U-235 releases 1.9 x 1010 kJ. Calculate the number of kg of coal needed to produce the same amount of energy as the fission of 1 kg of U-235 (235.05g/mol)
Question- A certain elemental metal crystallizes in a body-centered cubic unit cell. If the length of an edge of the unit cell is 0.430 nm, what is the closest value to the atomic radius (in nm) of this metal atom
A 2.15 g sample of white solid was vaporized in a 345 mL vessel. If the vapor has a pressure of 985 mmHg at 134°C, what is the molecular weight of the solid
Hydrogen gas is bubbled into a solution of barium hydroxide that has sulfur in it. The unbalanced chemical equation for the reaction that takes place is:
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