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In titrating a 25.00 mL of a 0.100 M HCl solution with a NaOH solution of unknown concentration, 10.25 mL of the base was needed to reach the end point. Calculate the concentration of the NaOH solution. The reaction between HCl and NaOH is as follows:HCl + NaOH -> NaCL + H20
If the minimum amount of solvent is recrystallized at 12.8 g by heating it to 70 C and sampling it in an ice water bath what is the minimum percent recovery of the recrystallized material?
Assume that the kinetic energy of a 1300kg car moving at 140km/h could be converted entirely into heat. How much water is created in grams?
What is the hydronium ion concentration in an aqueous hydrochloric acid solution that has a pOH of 11.540 ?
Calculate the standard free energy change for silver sulfate dissolution at 25 degrees Celsius.
A 43.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solution at 32°C ?
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 400.0 Torr at 45.0 °C. Calculate the value of ?H°vap for this liquid.
N2 + 3H2 --> 2NH3 what volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
A 7.45-L container holds a mixture of two gases at 35 °C. The partial pressures of gas A and gas B, respectively, are 0.368 atm and 0.852 atm.
A solution of 2.40 grams of the unknown hydrocarbon dissolved in 26.7 grams of naphthalene is found to freeze initialy at 76.2 Degree Celsius. Caluculate the apparent milar mass of the unknown hydrocarbon on the basis of the freezing-point depress..
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of mixture of 2.00 lb of NaCl and 12.00 lbs of ice if exactly half of the ice melts?
A volume of 25.0 mL of 0.100 M HCO2H(aq) is titrated with 0.100 M NaOH(aq). What is the pH after the addition of 12.5 mL of NaOH? (Ka for HCO2H = 1.8 × 10-4)
Draw the abbreviated structural formula of the products of the complete hydrolysis of lidocain.
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