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In a constant pressure calorimetry experiment, a reaction gives off 20.8 kJ of heat. The calorimeter contains 150 g of water, initially at 23.4 oC.
What is the final temperature of the water? The heat capacity of the calorimeter is negligibly small.
A piece of metal of mass 18 g at 117?C is placed in a calorimeter containing 48.2 g of water at 21?C. The final temperature of the mixture is 85.4?C. What is the specific heat capacity of the metal? Assume that there is no energy lost to the surro..
Calculate the activation energy of a reaction whose rate constant is 4.22 x 10?4 s?¹ at 25°C and 4.54 x 10?4s?¹ at 45°C.
How many grams of precipitate will form from 100mL solution that is both 0.90 M in Na2S and 0.20 M in PbCl2?
the heat of solution of lithium carbonate is 3.06kjmol solute in 200 moles of h2o. what effect would you expect
a gaseous mixture of sulfur dioxide and nitric oxide has a density 1.782 gl at the temperature of 12.64 degree celsius
If the groundwater at the top of the saturated zone is in equilibrium with air, calculate the concentration of m-Xylene in the air in mol/L
Estimate the time it will take to flush 99% of the discharge from the lake. Immediately after the spill, the lake, completely mixed, has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the ..
A ground state H atom absorbs a photon of light that has a wavelength of 97.3 nm. It then gives off a photon that has a wavelength of 486 nm. What is the final state of the H atom. Please explain why you choose the values you do for N1 and N2 of t..
an experiment that led to the formation of the new field of organicchemistry involved the synthesis of ureacn2h4o by
What about formation of a monobrominated alkane -- from an alkene. What sort of addition reaction (see the list of possible reagents in section 4.6 (12.6) does give a monoborminated alkane, when reacting with an alkene.
What is the effect on Kc when the temperature of an exothermic reaction is lowered. according to le chatelier's principle how is equilibrium in part a reached
Calculate the molarity of a solution of sodium hydroxide, NaOH, if 23.64 mL of this solution is needed to neutralize 0.5632 gof potassium phthalate
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