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Compute the enthalpy change for the thermite reaction: 2Al(s)+Fe2O3(s)→2Fe(s)+Al2O3(s), ΔH°rxn=-850 kJ Explain when 8.00mol of Al undergoes the reaction with a stoichiometrically equivalent amount of Fe2O3.
To what volume should you dilute 130. mL of an 7.11 M CuCl2 solution so that 65.0 mL of the diluted solution contains 4.24 g CuCl2?
The density of hexa-fluorobenzene is 1.61 g/ml. If you mix dichloromethane, water and hexafluorobenzene together how many layers will there be and what will their positions be
the addition of bromine to an equimolar mixture of cis- and trans-2-butene generates only three stereoisomers. Explain.
Iodine-131 is a radioactive isotope. After 7.00 days, 54.7% of a sample of 131I remains.
a gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 265 mmHg; Ar, 121 mmHg; and )2, 168 mmHg. The mixture also contains helium gas. what is the partial pressure of the heliu..
How much energy is liberated at constant pressure if .0894g of HCl reacts with excess calcium carbonate
if 17.2 ml of 0.800 m hydrochloric acid solution are required to neutralize 5.00 ml of a household nh3 solution
a student prepared a stock solution by dissolving 10.0g of koh in water to make 150. ml of solution. she then took 15.0
What volume of ether would be required to extract 0.95 g of aspirin from a solution of 1.0 g of aspirin in 100 mL of water in a single extraction
you have a 10.40-g mixture of table sugar c12h22o11 and table salt nacl. whenthis mixture is dissolved in 150. g of
Consider an electron for a hydrogen atom in an excited state. the maximum wavelength of electromagnetic radiation that can completely remove the electron from the H atom is 1460 nm. Determine the initial excite state for the electron (n=?)
the specific heat of fat is 0.45 and the density of fat is 0.94 . how much energy in calories is needed to heat 19 of
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