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A gaseous mixture of and contains 39.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 545 ?
calculate the number of grams of acetic acid per 10ml of the vinegar. Since vinegar has a density of about 1.00 gram/ml, 100 ml eighs about 100 g.
calculate the energy of a photon of light with a wavelength of 360nm.
The liberated hydrogen occupied a volume of 320ml when collected over water at 25 degrees celcius and the pressure of the gas was equalized to the atmospheric pressure of 750mm as in this lab. Calculate the equivalent weight of the metal, M.
A bottle of wine consists of an 11 weight percent solution of ethanol (C2H5OH) in water. If the bottle of wine is chilled to -20oC, will the solution begin to freeze? Kfp for water is 01.86 oC?m-1
Assume that only a single stream exits the fuel cell. What is the flow rate of each of the species leaving the fuel cell? Not that the flow rates given to correspond a fuel cell rate at approximately 50kW using 2004 technology.
Methane and hydrogen sulfide form when 36g H2 reacts with carbon disulfide. calculate the percent yield if the actual yield of CH4 is 69.8 g
a student found that 0.0025 moles of NaOH was used in titration. how many moles of fatty acids where in the sample
Gold has a face-centered cubic structure and has a density of 19.3 g/cm3. What is its atomic radius?
What volume of 3 M H2SO4 is needed to neutralize all of the disodium salicylate and the excess NaOH (2.17 mL excess) present after the initial reaction?
What is the cruising range (in miles) of the automobile on a full tank, assuming all the energy is transferred to the wheels? If the actual cruising range is 732 km, what is the efficiency of the engine?
The normal melting and boiling points of O2 are -218C and -183C respectively. Its triple point is at -219C and 1.14 torr, and its critical point is at -119C and 49.8 atm.
The products of the fastest inactivation process are as explain the mechanism is accountable for the making of the products.
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