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Using the same sample of gas (P 1= 795 torr , T 1 = 37 C ), we wish to change the pressure to 7950 torr with no accompanying change in volume or amount of gas. What temperature T 1, in Celsius, is needed to reach this pressure?
How many liters of oxygen,O2,are required for the complete combustion of 1/2 mole of pentane,C5H12 at standard conditions
At high temperature, cyclopropane is converted to propene, the materialfrom which polypropylene plastics are made. The reactionwas monitored and the data below was collected:
The mass percent of a three component gas sample is 58.0% C2H4O2, 14.6% NH3 and 27.4% CH2O. Calculate the partial pressure (atm) of CH2O if the total pressure of the sample is 0.340 atm.
Diphenylethyne can be prepared from meso-1,2-dibromo-1,2-diphenylethane, by double E2 elimination via the corresponding alkene. a) Which alkene is initially formed?
At 25 c the ion product of water, Kw is 1.9 x 10^-14. What is the concentration of hydroxide ions in a solution where the concentration of hydrogen is found to be 5.0 x 10^-15 mol dm^-3.
Catalyst to Reduce Cure Temperature in Bonding Wood with MDI, A wood chemistry course that indicates that methylene diphenylisocyanate (MDI) is used as a common resin and/or glue in bonding wood fibers together in composite type substrates.
why does water in a wide, flat shallow dish evaporate more quickly than the same amount of water in a tall, narrow vase? c) why does a sandwich on a plate dry out faster than a sandwich in plastic wrap
A molecule of N2 in air travels at about 1000 ft/sec. If the supersonic transport Concorde travels at 1500 miles/hour, how fast does it travel in ft/sec? (1 mile = 5280 ft)
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the m..
what was the concentration of the nitric acid? Write the neutralization reaction, balance it, name the products THEN Solve the problem above
In a chemical reaction two water-soluble ionic substances react to form an insoluble solid precipitate in a metathesis reaction. Would you expect DS to be positive, negative, or close to zero for this reaction
This indicates that the solution is now more acidic, and the reaction shifts to the right, working to lower the concentration of hydrogen ions, and return to equilibrium
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