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Nitrogen forms more oxides than any other element. The percents by mass of N in three different nitrogen oxides are (I) 46.69% (II) 36.85% (III) 25.94%. For each compound, determine:
(a) the simplest whole number ratio of N to O and
(b) the number of grams of oxygen per 1.00 g of nitrogen.
how many kilocalories are needed to heat the 1700kg of water from 56 degrees fahrenheit to 167 degrees fahrenheit?
The half-life of radon-222 is 3.8 days. How much of a 100 g sample is left after 15.2 days?
Suppose that the gas in a storage tank exerts a pressure of 55.125 lb/in2 . What is the pressure of the gas in units of torr?
Calculate how many milliliters of carbon dioxide would be produced theoretically from 20g of sucrose at 25 degrees Celsius and 1 atomosphere pressure.
can be done by the system if the octane is completely converted to carbon dioxide and water vapor? What will the enthalpy change be for the process? Calculate the root-mean-square speed of the carbon dioxide molecules in the question above.
Draw all the structural isomers for the molecular formula C4H9Br. Be careful not to draw any structures by crossing one line over another
Assume that 120 grams of CH 3CH 2OH at 29 degree Celsius temperature is added with 250 grams of CH 3CH 2OH at 85 degree Celsius degree Celsius at constant pressure of atmosphere.
Draw those that have a trisubstituted ring where the methyl groups are oriented meta.
Propose a structure for an amine of formula C4H9N, which does not liberate a gas when treated with NaNO2 and HCl, and has IR absorptions at 917 cm-1, 990 cm-1, and 1640 cm-1,
Calculate the volume of O2, at STP, required for the complete combustion of 165 g octane (C8H18) to CO2 and H2O.
can a liquid be identified by the same principl(e.g. mixing an unknown liquid with known liquid) and determining if the boiling point of the mixture is depessed if the two liquids are different?
Write a balanced chemical equation for this reaction when Ferrophosphorus reacts with pyrite making iron (ll) sulfide and a compound that is
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