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Calculate the enthalpy change for converting 1.00 mol of ice at -50.0°C to water at 70.0°C in kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O , Hfus = 6.01 kJ/mol, and Hvap = 40.67 kJ/mol
The reaction of barium metal with liquid water produces 660.2 kJ of heat for every mole of barium that reacts. One of the products is barium hydroxide.
If 4.86 g of solid carbon dioxide was placed into an evacuated 2.00 L container, sealed, and then heated until it completely changed to a gas with a final temperature of 75 degrees celcius, what would be the pressure?
Determine value for the rate of formation of HCl during the same interval of 3 seconds If the rate of disappearance H2 = -0.13 M/s at this specific time?
How many moles of NH3 can be produced from the reaction of 0.5 moles of N2 with that amount of H2?
Properties of Electrolyte Solutions, In the winter of 1994, record low temperatures were registered throughout the United States. For example, in Champaign, Illinois, a record low of -29 F was registered.
Determine what would be the total ?nal pressure of the system in atmospheres If we completely hydrolyzed 0.18 kg of H2O in a 8.2 L container at 300 K?
At 250C, the equilibrium constant Kp for the reaction PCl5(g) PCl3(g) + Cl2(g) is 1.80. Sufficient PCl5 is put into a reaction vessel to give an initial pressure of 2.74 atm at 250C. Calculate the pressure of PCl5 after the system has reached equi..
what is the molecular formula and empirical formula of NH2Cl, molar mass = 51.5 g/mol
0.75 g of hydrogen chloride (HCl) is dissolved in water to make 7.0 L of solution. What is the pH of the resulting hydrochloric acid solution.
The volume of a drop of rain was found to be 0.448 ml at N.T.P. How many molecules of water and number of atoms of hydrogen are present in this drop.
A 15 mL sample of a solution of Pb(ClO3)2 was diluted with water to 19 mL. A 15 mL sample of the dilute solution was found to contain 0.027 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution.
Draw the Lewis Structure for the ClF2+ion and AlF4-. For each ion, what are its electron-pair and molecular geometries? What orbitals on Cl and F overlap to form bonds between these elements
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