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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.
The binary hydrogen compounds of the Group 4A elements and their boiling points are: CH4, -162 deg C; SiH4, -112 deg C; GeH4, -88 deg C; and SnH4, -52 deg C. Explain the increase in boiling points from CH4 to SnH4.
Hydration of alkynes (via oxymercuration) gives good yields of single compounds only with symmetrical or terminal alkynes. Draw the major organic product(s) formed when hex-2-yne undergoes hydration
to prevent corrosion and make paints adhere better some aluminum products are treated with chromiumiii phosphate before
Synthetic chemists often take IR and NMR spectra of crude reaction products, before further purification, looking for evidence that the reaction had afforded the expected product.
Question- The metal titanium has a body centered cubic unit cell. the density of titanium is 4.50 g/cm^3. Calculate the diameter of titanium in angstrons (1 angstrom= 10^-8 cm)
For the following elements show the allocation of electrons to their orbitals on the basis of the Pauli exclusion principle, Hund's rule, and the Aufbau principle.
While mercury is very useful in barometers, mercury vapor is toxic. Given that mercury has a DHvap of 56.9 kJ/mol and its normal boiling point is 356.7°C, calculate the vapor pressure in mm Hg at 25°C. the answer is 4.29 x 10-3 mm Hg
The molar mass for each reactant is shown below the reactant, and the mass of each reactant for this problem is given above. Which reactant is the limiting reagent?
Calculate the energy in joules required to ionize a hydrogen atom when its electron is initially in the n = 4 energy level.
Suppose you analyze a sample of fertilizer by the procedure of this experiment and obtain 1.000g of MgNH4PO4 * 6H20. Calculate the equivalent mass of P2O5 initially in the sample.
Complete the following neutralization reaction, and identify the strong acid, strong base, weak acid and/or weak base. a. CH3COOH + NH4OH
What was the concentration of the phosphoric acid?
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