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Calculate the pH of the solution resulting from the addition of 20 mL of 0.10 M NaOH to 100 mL of 0.10 M HCN (Ka = 4.9x10^(-10))
How much potassium nitrate has to dissolve in water to absorb 110 of heat?
At 0.0oC, if the volume of air is 3.1 mL and the pressure of the atmosphere that day is 815 mmHg, what is the number of moles of air?
Compute the number of gms of CoCl2 that would be needed to prepare the solutions:(a) 550 mL of a 1.75 M solution (b) 210 mL of a 0.0180 M solution.
A benzoic acid solution was prepared by adding 0.488 g benzoicacid to a 100 mL volumetric flask and then adding enough water tobring the total solution volume to 100.00 mL.
strip of magnesium reacts in 3.0 mL of 5.0 M HCl over a given period of time. Evaluate the mol mg/mol HCl ratio for the reaction.
A student standardized her I2 solution by preparing a solution of 0.0450 g of ascorbic acid (vitamin C) in a 100 mL volumetric flask. She titrated several 10.00 mL samples of the Vitamin C solution
210 mg Ca(OH)2 and 210 Al(OH)3. A 8.3×10^-2 M HCl, which is similar to stomach acid, is used to neutralize 5.0mL of liquid antacid. How many mililiters of HCl solution are needed to neutralize Ca(OH)2, then Al(OH)3?
In either of the simple distillation experiments, can you account for the boiling point of your product in terms of the known boiling points of the pure components of your mixture?
Determine the freezing point of an aqueous solution that is 1,7 m in ethylene glycol. The freezing point depression constant for water is 1.86°C/m The freezing point of pure water is 0.0°C.
A liquid begins to appear on the inside of a closed flask. At first glance before the liquid began to appear, you might have thought the flask was empty
Carbon disulfide and carbon monoxide are produced when carbon is heated iwth sulfur dioxide. 5C9s) + 2SO2(g) --> CS2(l) +4CO9g)
What are the respective concentrations (M) of Na and SO4 ions formed by dissolving 0.600 mol Na2SO4 in 135 mL water?
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