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While 2289 J of heat energy is added to 46.9 g of ethanol, C2H6O the temperature raises by 19.9 °C. Compute the molar heat capacity of C2H6O.
Explain how much heat in kilojoules are evolved if a total of 968.4mL of H2 was collected over water at 14.00°C as well as an atmospheric pressure of 557.04 mm Hg.
What substances are present after the reaction is over? How many grams of ammonia are formed? How many grams of the excess reagent remain after the reaction is complete?
What is the percent yield if 185 grams of SiO2 are made from 328 g of Cr2O3 by the following equation. 3Si (s) + 2Cr2O3 (s) ---> 3SiO2 (s) + 4Cr (l)
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change). What is the concentration of phosphate ions left in solution after the reaction is complete
2. 0.33g of KOH is dissolved in 350.0ml of ethanol and 1.45g of C2H5I is dissolved in 350.0ml of ethanol. Assuming the reaction is first order, when equal volumes of the two solutions are mixed, what is the initial rate at 40oC?
List the molecular geometry and the electron pair arrangement of all possibilities that would give a polar molecule when all the surrounding atoms are identical.
Calculate the molarity of the following solution. 2.5 moles of glucose in 5.0L of solution. Express your answer using two significant figures
897.4 grams of sodium sulfide reacts with excess nitric acid. what volume of h2s gas is produced if the reaction is
consider an insulated system containing 150 g of ice and 150 g of liquid water at equilibrium under atmospheric
A 1.45 g sample of an iron ore is dissolved in acid and the iron obtained is (aq). To titrate the solution, 21.6 mL of 0.102 M KMnO4(aq) is required. What is the percent of iron in the ore? Hint: calculate moles of iron then mass of iron then % ir..
helium atoms do not combine to form He2 molecules, yet He atoms do attract one another weakly through? (a). dipole-dipole forces
For a particular process that is carried out at constant pressure, q= 130 kJ and w= -20 kJ. Therefore,
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