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1) Calculate the ratio of NaF to HF required to create a buffer with pH = 4.10. 2)Calculate the ratio of CH3NH2 to CH3NH3Cl required to create a buffer with pH = 10.22
Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. Heat capacity of H2O(s) 37.7 J/(mol X K) Heat capacity of H2O(l) 75.3 J/(mol X K) Enthalpy of fusion H2O 6.01 KJ/m..
Calculate the volume of a balloon at the final temperature if this balloon at temperature of 279K and an initial volume of 2.3L is warmed to 406K.
Metallic elements tend to act as Lewis acids and form complexes with a variety of Lewis bases. Since most elements are metals, and almost all metals form complexes, it is important to understand these complexes
draw a sheme o both reactions inlcuding structures and names of all possible products of monosubustitution only. Choose one reaction and provide appropriate mechanism including all resonance strucutres.
What is the H3O+ concentration and the pH for a 0.001M HCl solution in one liter of a 0.01M CaCl2 solution. Solution is ideal. Real solution using DH Limiting Law
A solution of sodium chloride in water has a vapor pressure of 20.3 torr at 25°C. What is the mole fraction of NaCl in this solution?
Give some values of pressure and temperature at which you are sure that the substance called zinc exists in an equilibrium state as a) solid and b) vapor
Will the parietal pressure of SO3 increase, decrease, or remain the same? Be sure to support your answer with CLEAR calculation.
A gas occupies 22.4 L at STP and 14.5L at 100 C and 2.00 atm pressure. how many moles of gas did the system gain or lose?
Calculate the approximate molarity of this solution from the volume, percent composition, and density.
Calculate the pH of 0.500L of a buffer solution composed of 0.20 M butyric acid (CH3(CH2)2)2COOH, Ka = 0.000015) and 0.10 M sodium butyrate, (NaCH3(CH2)2COO).
During an experiment, a student adds .339 g of calcium metal to 100.0 mL of 2.05 M HCl. The student observes a temperature increase of 11.0 °C for the solution. Assuming the solution\'s final volume is 100.0 mL,
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