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You add 0.0500 g of sodium acetate to 500 mL of a 0.0025 M actetic acid/0.12 M sodium nitrate solution and mix well. The hydrated radii of sodium, hydronium, acetate, and nitrate ions are 4.5, 9.0, 3.5, and 3.0 °A, respectively what is the strength of the solution? calculate the activity coeffiecents of each speicies.
Calculate the heat released as 115 grams of water cool from its normal boiling point (100 degrees C) to a temperature of 33 degrees C.
Calculate the number of grams necessary to prepare 50. ml of 0.45 M NaCO2H. Calculate its pH.
Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 4.00 mL of 0.100 M NaOH(aq) is added to the original buffer s..
A solution contains 0.06054 M H3PO4 and 0.0386 M NaH2PO4. What volume of 0.05031 M NaOH is required to titrate 10.00 mL of this solution to the first end point
The solubility of the ionic compound M2X3, having a molar mass of 214 g/mol, is 3.18 10-7 g/L. Calculate the Ksp of the compound.
a certain substance has a molar enthalpy of vaporization of 31.6 kj mol. How much of the substance is in a sample that requires 57.0kJ to vaporize?
A 122 piece of metal is heated to 285 and dropped into 84.0 of water at 26. If the final temperature of the water and metal is 58.3, what is the specific heat of the metal.
A chemist burns 160 g of aluminum in oxygen to produce aluminum oxide. She produces 260 g of aluminum oxide. Write a balanced equation and calculate the theoretical yield and percent yield.
A gas is compressed from 68.2 L to 8.0 L at 0.70 atmospheres? In addition a total of 3300 J of heat are gained from warmer surroundings. What is the change in internal energy in kJ
What is the wavelength of a baseball having mass 100.0 g traveling at a speed of 160 km/hr? What is the wavelength of an electron traveling at the same speed
Assuming that the solution volume remains constant at 125mL. find the molarity of the final KBr solution?
A 35.0 mL sample of gas is enclosed in a gas tight syringe at 22 degrees celsius. If the syringe is immersed in an ice bath at 0 degrees celsius, what is the new gas volume?
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