Rate constant for a certain reaction related problem
The rate constant for a certain reaction is = 5.80×10-3 . If the initial reactant concentration was 0.350 , what will the concentration be after 2.00 minutes?
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Ammonia (NH3, Kb = 1.8 x 10^-5) is added to 100 mL of water at room temperature. The vapor pressure of the water above the solution drops to 0.03 atm. What is the pH of the solution in the limit that any gas phase NH3 is negligible?
What is the freezing point of a benzene solution containing 400 g of benzene and 200 g acetone (C3H6O)? Kf for benzene is -5.12 C/m. The freezing point of pure benzene is 5.5 degrees Celcius.
Vehicles begin to arrive at a toll booth at 850 am with an arrival rate of x(t) = 4.1 + .01t (with t in min and x(t) in veh /min.) The toll booth opens at 9am and processes vehicles at a rate of 12 per minute throughout the day.
A 2.00 l sample of h2 at 70c and 725mmhg is compressed to 1750ml at 1.20atm what is the new temp? Calculate the c temperature at which 43.0g of oxygen occupies 1300. ml at 860 torr
A coal fired power plant is served by 25 trucks. When loaded, each truck consists of one single-axle of 14 kips (the front axle), two tandem axles of 32 kips each (the middle axles) and one single axle of 22 kips (back axle).
20 sample of dry ice is added to a 765 flask containing nitrogen gas at a temperature of 25.0 and a pressure of 715 . The dry ice is allowed to sublime (convert from solid to gas) and the mixture is allowed to return to 25.0 .
A 385-L sample of this gas, measured at 22.6 °C and 739 mmHg, is burned at constant pressure in an excess of oxygen gas. How much heat, in kilojoules, is evolved in the combustion reaction?
A total of 2.00 rm mol of a compound is allowed to react in a foam coffee cup that contains 117 g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 ^circ rm C. What is the enthalpy of this reaction? Assume that n
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Explain practicality of these scales- Scale for the Assessment of Negative Symptoms (SANS) & Scale for the Assessment of Positive Symptoms
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