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What is the enthalpy change corresponding to the melting of 2.5 moles of H2O? what is the system? What is the surrounding? In what direction does the heat flow? Is the process endothermic or exothermic?
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 8.0×10-2 M NaOH. A:lactic acid
the most important commercial process for converting n2 from the air into nitrogen-containing compounds is based on the
For a substance such as carbon dioxide or water, calculate and graph the phase boundaries in the solid vapor, solid liquid, and liquid vapor regions
what compounds would you use and how would testing these two compounds contribute in your knowledge of the above mentioned subjects
What is the resultant pressure if 3.7 mol of ideal gas at 273 K and 1.97atm in a closed container of constant volume is heated to 446 K.
Which substance would be in top layer when each of the following pairs of solvents are added to the same container
What mass of carbon dioxide is produced from the complete combustion of 1.80×10?3 of methane? Express your answer with the appropriate units.
The reaction between sodium metal and chlorine gas produces 822 kJ of heat energy for chlorine molecule consumed 2 Na (s) + Cl2 (g) ---> 2 NaCl (s) How much heat is released if 12.8 moles of NaCl are produced
When a metal was exposed to light at a frequency of 3.49× 1015 s-1, electrons were emitted with a kinetic energy of 3.60× 10-19 J. What is the maximum number of electrons that could be ejected from this metal by a burst of light
Calculate the 1/2 life for the decomposition of co2 which is first orderwithnrespect to co2 at 1000degree k with k=1.8x10to-13degree sec
A beaker with 130 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.20 mL of a 0.370 M HCl solution to the beaker. How much will the pH..
Z- is a weak base. An aqueous solution of NaZ is prepared by dissolving 0.350 mol of NaZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 8.93 at 25.0 °C
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