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The thermite reaction in which aluminum metal reacts with iron(III) oxide to produce a spectacular display of sparks, is therefore exothermic that the product (iron) is in the molten state
2Al(s) + Fe2O3(s) right arrow Al2O3(s) + 2Fe(l)
Delta H = -202.9 kcal/mol
How much heat (in kilocalories) is released when 3.14 g of Al is used in the reaction?
If you desire to obtain the value of R directly in J/mol*K, what must be the units of pressure and volume in the equation
Commercial club soda is produced by pressurizing water with 10 atmospheres of CO2. Find the value of KH for CO2 on the net or the library, and calculate how much CO2 is in 12 fl ox. glass of club soda.
What is the molarity of a solution prepared by dissolving 4.92 g of calcium nitrate, Ca(NO3)2, in 250 mL of water? (The molar mass of Ca(NO3)2 is 164 g/mol.)
Suppose that 25g of gold is initially at 27 degrees Celsius. What's the final temperature of gold upon absorbing 2.35kJ of heat?
Calculate the theoretical yield of C2H5Cl when 138 g of C2H6 reacts with 218 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5CL and HCl.
Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and bromine occur naturally as mixtures of two abundant isotopes
the naturally occurring compound urea conh22 was first synthesized by friedrich wohler in germany in 1828 by heating
If the antiacid selected for the analysis is know to contain only milk of magnesia how could this procedure be midified
Calculate the final temperature when a 22.0 gram sample of ice at 0oC is placed into a styrofoam cup containing 113 grams of water at 77.1 oC. Assume that there is no loss or gain of heat from the surroundings.
What is the coordination number for each of the following complexes? A. [Co(NH3)4(H2O)2]^3+ B. [Cr(EDTA)]^-
What mass of this substance must evaporate in order to freeze 170 of water initially at 23? (The heat of fusion of water is 334 the specific heat of water is 4.18 .
many cigarette lighters contain liquid butanec4h10l. using standard enthalpies of formation calculate the quantity of
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