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How many grams of F2 must react with NaCl in the following reaction if 800 kJ of energy are released? 2NaCl + F2 --> 2NaF + Cl2, ?H = -320 kJ
A. 47.5B. 95.0C. 40.0D. 125E. 190
determine the cell reaction the standard cell potential e0 cell and the half-cell that acts as the cathode for the
What is the specific heat of lead if it takes 97.5J to raise the temperature of a 75.0g block by 10.1 degress celcius?
The product is a cyclopentyl ether (five carbons with an oxygen). Then attached to a carbon directly adjacent to the oxygen is a methyl bromide group.
When a sample of helium gas is charged with electricity, what causes the bright-line spectrum that is observed
Gas A has a density of 0.20 gL-1, and gas B has a density of 0.80 gL-1, both at the same specific temperature and pressure. Which gas will diffuse faster. Briefly explain.
The initial temperature of the calorimeter is 23.0}C. If 7.20g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution\Delta H_soln of CaCl2 is -82.8 kJ/mol.
3 enclosed flasks with different volumes have 50 ml of h20 at the temperature of forty degree celsius volume of flask 1
Chlorine-36 is a B emitter, with a half-life of 3.0*10^5years. How many beta particles are emitted in 1.5 min from a 5.4mg sample Chlorine-36?
A 1.000L solution is prepared in which Au+,Ag+,and Cu+ ions are present in solution as nitrates all at a concentration of .001M a solution of sodium chloride is slowly added. which compound will begin to precipitate first the ksp
Salicyclic acid forms a polymeric byproduct as a result of this reaction. It is a small percentage of the final product mixture, but it can be visualized via TLC (the small spot just above the aspirin). Provide a balanced chemical equation for the..
Based on the force vs atomic spacing and energy vs atomic distance curves explain why some materials have high strength and high melting temperatures
A 530. g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and heat capacity for the vessel of 10.0 J/K
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