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15.0 ml sample of .1M Ba(OH)2 is titrated with .125 M HCl. Calculate the pH for atleast five different throughout the titration curve and make a sketch of the curve.
Write the overall equation for the production of nitric acid by the Ostwald process by combining the preceding and any other necessary equations.
Given that 24.0mL of 0.170 M sodium iodide reacts with 0.209M mercury(II) nitrate solution. what is the mass of HgI2 precipitate?
Bone was dissolved in hydrochloric acid, giving 50.0 mL of solution containing calcium chloride, CaCl2. To precipitate the calcium ion from the resulting solution, an excess of potassium oxalate was
Calculate the heat (in kJ) associated with the complete reaction of 155g of NH3.
The temperature of the mixture is 0 degrees C , and the total pressure is 1.00 atm. How many grams of helium are present in the gas mixture?
If a 2.5 L reaction vessel initially contains 725 torr of cyclopropane at 485C , how long will it take for the partial pressure of cylclopropane to drop to below 105 ?
Suppose a 5.00 L sample of O2 at a given temperature and pressure contains 2.73 × 1023 molecules. How many molecules would be contained in 5.00 L H2 at the same temperature and pressure?
for which K=130. assume that .406 mol of C(g) is placed in a cylinder that has a massless, frictionless piston. the temp is 300 K and the barometric pressure on the piston is constant at 1 atm. the
How many grams of methane gas (CH4) need to be combusted to produce 18.2 L water vapor at 1.2 atm and 275 K? Show all of the work used to solve this problem.
What volume of O2 gas, in liters, is required for complete reaction if the oxygen has a pressure of 386 mm Hg at 25°C?
In a test on the vaporization of water into air in a wetted-wall column, the following data were obtained: Tube diameter= 1.46 cm. Calculate the rate of mass transfer of water in air.
A 1.00 L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl. The Ka for HF is 3.5 x 10-4.
If a 189-mg piece of gold (density = 19.32 g/cm3) is hammered into a sheet measuring 2.4 ft 1.0 ft, what is the average thickness of the sheet in meters?
Carbon tetrachloride reacts at high temperatures with oxygen to produce two toxic gases, phosgene and chlorine. Calculate Kc for the reaction 2CCl4(g) + O2(g) = 2COCl2(g) + 2Cl2(g).
To obtain the same antifreeze protection requires 76g of propylene glycol to replace each 62g of ethylene glycol. To calculate the mass of propylene glycol required to replace 5.00gal of ethylene gl
The volume of a gas collected over water at 32 C is 627 ml. The barometer reads 752 torr (water levels are equal). What is the volume of the gas when dried and measured at STP?
Calculate the maximum mass in grams of H2S that can form when 218 g aluminum sulfide reacts with excess water according to:
A stream of toluene at 500°C and 2 bar, flowing at 40 kmol/h, is cooled to 200°C and 1 bar pressure in a heat exchanger. How much heat needs to be removed from the heat exchanger (kW)?
How many calories are required to raise the temperature of a 150 gram sample of gold from 25 degree celcius to 175 degree celcius? The specific heat of gold is 0.0308 cal/gram degree celius.
How much energy (in kilojoules) is needed to heat 5.65 of ice from -14.0 to 34.5? The heat of fusion of water is 6.01, and the molar heat capacity is 36.6 for ice and 75.3 for liquid water.
In Part A of the experiment, you will need to generate some 0.60 M acetic acid solution by dilution of a stock solution. How many mL of the sodium acetate solution should you prepare?
a solution contains an unknown mass of dissolved silver ions. when potassium chloride is add to the solution.,a white precipitate forms.The precipitate is filtered and dride and then found to have a
What is the percent yield if 6.25 g S2Cl2 is isolated from the reaction of 10.0 g S8 and 7.50 g Cl2?
Draw a Lewis diagram for CH3OCH2CH3. Use your diagram to answer the following questions. Best ans 10 points!? The number of C-H bonds = 8.