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After 1.02 grams of NaOH are dissolved in 50.0 grams of water, and the solution cools to room tempurature of 21.5 degrees C, it is combined with an excess of HCl dissolved in 50.0 g of water at 21.5 degree C (so NaOH is the limitng reactant). If the tempurature of the combined solution rises to 27.8 degree C what is the DeltaHrxn (delta heat reaction) (in kJ/mole) for this process?
A quantity of N2 occupies 62.2 L at a particular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
calculate the external pressure that must be applied to seawater, 1.14 M total ion concentration at 10 degrees celcius if the maximum concentration allowed in the product water is 166 mg/L
THF followed by basic peroxide and then acid. Give thpse three products; use arrows demonstrating electron movement to show details of the reactions, including the peroxide cleavage of the B-C bond.
why does hydrochloric acid and acetic acid have the same equivalence, while hydrochloric acid and sulfuric acid
A sample of steam with a mass of 0.550 g and at a temperature of 100C condenses into an insulated container holding 4.50 g of water at 6.0C. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture?
Why does a piece of potato break down a 100% hydrogen peroxide solution faster than lets say a 75% hydrogen peroxide and 25% water
Determine how many pills does the female require to take each time she wants the dosage of 375miliigrams?
consider the reaction CO2+H2=CO+H2O.The equilibrium concentrations are [CO]= 0.050M, [H2]=0.045M, [CO2]=0.086M, and [H2O]= 0.040M. Calculate K .
sodium hydroxide do you need to add to the volumetric flask before you dilute the solution to volume with distilled water?
When 28.6 kg of Fe2O3 react with 17.2 kg of CO and 6.3 kg of Fe are recovered, what is the percent yield for the reaction?
A gaseous mixture of O2 and N2 contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 805 mmHg ?
Consider the reaction: C2H5OH (l) + 3O2 (g) --> 2 CO2 (g) + 3 H2O (l) , ?H= -1.37 x 103 kJ When a 24.8-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat?
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