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Question- 1) How much of 5.0 M NaOH is needed to make 800 mL of 0.1 M NaOH?
2) A student titrated 10.00 mL HCL with standard NaOH in a 125 mL flask. The amount of NaOH needed was 24.50 mL. Calculate the molarity of the HCl solution if the concentration of the standarized NaOH is 0.09430 M. (The blank titration needed 0.10 mL of NaOH.)
3) Many drops of NaOH adhered to the uncleaned spots of a buret after the NaOH was deleivered in a titration of NaOH with HCl. How will this affect the molarity of HCl?
Give reasons or calculations to sustain your answer.
If you have 0.05M stock solutions of Tris Base and Tris Acid, how much of each would you use to make 100 ml of 0.05M Tris buffer at pH 8.8? The pKa of Tris is 8.3.
Problem- You have a 12 volt lead storage battery in your car (you can find the equations for the redox reactions in your text book). If you run two 45 watt headlights for 2.0 hours using your battery as the energy source, how many grams of lead su..
For such systems, it is often observed that the ratio of the vapor pressures of the pure species is nearly constant over a considerable temperature range. Let this ratio be r, and determine the range of values of A, expressed as a function of r, f..
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A sample of a gas weighs 2.006 g and has a volume of 1060.0 mL at 795.0 torr and 32.0 degrees Celsius. What is its molar mass?
A mixture of three gases has a total pressure of 1,380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar
a solution of ethanol c2h5oh in water is prepared by dissolving 65.7 ml of ethanol density 0.79 gcm3 in enough water
The solubility constant of TlBr is Ksp = 3.6 × 10-6 and the solubility constant of AgBr is Ksp = 5.0 × 10-13. Determine the range of NaBr volumes over which each solid precipitates.
The vapor pressure of water at 20°C is 17.5 mmHg. What is the vapor pressure of water over a solution prepared from 2.00 × 102 g of sucrose (C12H22O11, molar mass = 342 g/mol) and 3.50 × 102 g water? 1. 0.51 mmHg 2. 16.0 mmHg 3. 17.0 mmHg 4. 18.0 ..
A solution is made by dissolving 15.3g of HCl in enough water to make 4.70x10^2 mL of solution. Calculate the pH of the solution at 25 degree C.
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