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Calculate the pH of a solution prepared by dissolving 0.750 mol of NH3 and 0.250 mol NH4Cl in water sufficient to yield 1.00 L of solution. The Kb of ammonia is 1.77 x10-5 .
you are asked to titrate a 6.00 ml sample of vinegar using 0.25m naoh. the mass of your vinegar sample was 6.168g so
What size sample should be taken so that the percent purity is equal to five times the milliliters of 0.05M NaOH used to titrate it?
What is the equilibrium concentration of Cl at 1000 ? What is the equilibrium concentration of COCl2 at 1000 ?
One series of lines called the pfund series, occurs in the infrared region, and results when an electron relaxes from higher energy levels to terminate in the level for which n=5. calculate the wavelength and frequency of the lowest energy line of..
What could happen if a large housing area built on an unknown hazardous waste site contaminated with ppolychlorinated biphenlys
Manufacturing overhead equal $5, $2, and $3respectively. Calculate the amount of material cost, labor cost, andoverhead cost in the beginning Work in Process.
The second flask has a volume of 8 liters and contains oxygen gas at a pressure of 1.25 atm. When the stopcock between the flask is opened and the gases are free to mix, what will the pressure be in the resulting mixture
What can be said about the stoichiometric coefficients of a balanced chemical reaction AND the powers to which the concentrations are raised in the rate-law expression
liquid butane c4h10 is stored in cylinders to be used as a fuel. suppose 30.4 g of butane gas is removed from a
the rate constant of a reaction is 4.7 multiplied by 10-3 s-1 at 25degc and the activation energy is 33.6 kjmol. what
A quantity of ice at 0°C is added to 66.4 g of water in a glass at 55°C. After the ice melted, the temperature of the water in the glass was 15°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(..
Suppose a volume is divided into three equal parts. How many microstates exist for distributing four molecules among the three parts?
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