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A particular natural gas consists, in mole percents, of 83.0% CH4 (methane), 11.2% C2H6 (ethane), and 5.80% C3H8 (propane). A 385-L sample of this gas, measured at 21C and 739 mmHg, is burned in an excess of oxygen gas.
CH4=-890.3C2H6=-1559.7C3H8=-2219.1kJ/mol
What is delta U when 1.00 mol of liquid water vaporizes at 100 degrees C? The heat of vaporization is 40.66kJ/mol at 100 degrees C.
an optically pure compound was diluted to 400.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was -2.87° at 25 °C. Calculate the specific rotation of the compound.
a voltaic cell is constructed by immersing a strip of silver in a 1.0m agno3 solution and a strip of cadmiun metal in a
What minimum pressure must be supplied to a reverse osmosis water purification system in order to overcome the osmotic pressure in water that is 1.24 M in total dissolved ions at 16 C?
calculate the ph during the titration of 30.00 ml of 0.1000 m koh with 0.1000 m hbr solution after the following
question suppose the current flowing from a battery is used to electroplate an object with silver. calculate the mass
boron consists of two isotopes... b w mass number 10 andatomic number 5 that has a mass of 10.0 amu....... and b w
If a car has an EPA mileage rating of 30 miles per gallon, What is this rating in km L-1? 1 liter = 1 dm3, 1 gallon = 3.785 liter, 1 mile = 1.609 km.
An 11.79 sample of mo2o3(s) is converted completely to another molybdenum oxide by adding oxygen. the new oxide has a mass of 12.578g. What is the Empirical formula of the new oxide
Sodium atoms emit light with a wavelength of 330 nm when an electron moves from a 4 p orbital to a 3 s orbital. What is the energy difference between the orbitals in kilojoules per mole?
What is the millimolar (mM) concentration of ethanol in the blood at this limit. The density of ethanol is 0.789 g/ml.
Suppose that.95g of water condenses on a 75.0g block of iron that is initially at 22 degrees Celcius. if heat released during condensation goes omly to warming the iron block, what is the final temperature in celcius of the iron block. (assume Con..
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