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A calorimeter contains 500 g of water at 25°C. You place a cold pack containing 100 g of crystalline ammonium nitrate inside the calorimeter. When the ammonium nitrate finishes dissolving, the temperature of the water inside the calorimeter is 9.3°C. The specific heat of water is 4.18 J/g-°C. What is the enthalpy of fusion (?Hf) of the ammonium nitrate? (Show your work.) Where necessary, use q= mHf.
A possible side product of the aldol reaction of cinnamaldehyde and acetone is the self-condensation of acetone. draw the structure of the side product. explain how the experimental procedure we used is designed to minimize the formation of this s..
A 2.00 gram sample containing Fe requires 32.0 mL of a 0.1 N Permanganate solution to be used in a red-ox titration, what is the percentage of Fe in the sample?
How many electrons are in the oxidation half-reaction. How many electrons are in the reduction half-reaction? How many electrons are transferred
a 42 gram block of an unknown metal at 86.0oc was dropped into an insulated flask containing approximately 50.0 grams
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0370 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate
Balance the following full redox reactions using the lowest integer coefficients, in basic conditions. NiO2(s) + Zn(s) ? Ni(OH)2(s) + ZnO22?(aq)
for the reaction abc rarr de the initial reaction rate was measured for various initial concentrations of reactants.
Calculate the pressure difference between CH4 and an ideal gas under these conditions. The van der Waals constants for CH 4 are a=2.300L2⋅atm/mol2 and b=0.0430 L/mol.
What is the percent yield of a reaction where 15.3g of oil of wintergreen is collected after 16.3g salicylic acid is reacted with an excess of
Florine is so reactive that it forms compound with material insert to other treatment when 0.448gm of plantinum is heated in florine, 0.71gm of dark red, volatile solid forms. What is emperical formula
How many Rolaids tablets would be required to neutralize the stomach acid in a typical human stomach (one liter). What assumptions are implicitly made about the stomach and contents, and is that justified?
Determine the concentration of calcium and chloride in the solution in both mg/L and mmol/L. You will need to find the molecular weights on a periodic table.
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