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When a 4.25g sample of solid ammonium nitrate dissolves in 60 g of water in a coffee cup calorimeter,the temperature drops from 22 oC to 16.9oC. Calculate the ΔH(in KJ/mol and also the ΔH in Kj/g NHΔ4NO3) for the solution process.Assume the specific heat of the solution is the same as of taht of pure wate which is ΔH=4.18j/g.K)?
When 2, 2-diphenyl-1-ethanol is treated with aqueous HI the main product of the reaction is 1-iiodo-1, 1-diphenylethane. Propose a plausible mechanism that accounts for the formation of this product
what mass of Mg is formed from molten MgCl2 if a current of 1.8 amps is passed through the sample for 16.7 hours
An ice cube of 15.1 grams is placed into 304 grams of H 2 O. compute the change in temperature in the H 2 O upon completing melting of the ice.
At what pressure does the mean free path of argon at 25 C become comparable to the diameter of a spherical vessel of volume 1.0 dm^3 that contains it? Take ? =0.36nm^2.
What would be the major product if 1,4-dibromo-4-methylpentane was allowed to react with one equivalent of silver nitrate in ethanol. It is for a lab on the relative reactivity of alkyl halides in nucleophilic substitution reactions.
What is the final concentration of the solution made by diluting 4.0 mL of 0.0025M Fe(NO3)3 to a final volume of 10.0 mL
If a solution contains 0.01 M Ca^2+, 0.01 M Zn^2+, and 0.01M Ni^2+ ions and you want to separate them using aqueous (NH4)2C2O2, which ion will precipitate first as an oxalate, CaC2O4, ZnC2O4, or NiC2O4
how many moles of carbon dioxide can be produced if one tablet containing 0.0119 mol sodium bicarbonate is dissolved
A student measures out 100.0 ml of 1.00 M HCl and places it in a styrofoam cup. The temperature of the HCl is 22.30C. She then addes 1.002 g of MgO to the cup.
what concentration of aqueous nacl solution freezes at -15.2 c? the freezing point of pure water is 0.0 c and kf of
The total heat of hydrationof 1 mol of gas phase Li+ ions and Cl- ions is -865kJ. The lattice energy of LiCl(s) is 828 kJ/mol. Calculate the heat of solution of LiCl.
the air in an inflated balloon defined as the system is warmed over a toaster and absorbs 115 j of heat. as it expands
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