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A) Nitrogen forms several gaseous oxides. One of them has a density of 0.869 g L-1 measured at 764 mmHg and 150°C. Write the formula of the compound.
B) Write the balanced chemical reaction for the oxidation of sucrose C12H22O11 (s) to carbon dioxide gas and liquid water calculate ?H, ?U, and ?S for the reaction How much of this energy change can be extracted as a.) heat and b.) work?
If the pressure of gaseious chloroform in a flask is 195 mm Hg at 25 degrees celsius and its density is 1.25 g/l, what is the molar mass of chloroform?
When 50.0 mL of water containing 0.50 mol HCl at 22.5°C is mixed with 50.0mL of water containing 0.50 mol NaOH at 22.5°C in a calorimeter, the temperature of the solution increases.
Cobalt-60 exhibits first order decay and has a half-life of 5.26 years. If it must be replaced in a radiotherapy unit when its radioactivity decreases to 75% of its original value, how long can a 1.00 g sample be employed?
Given the reaction 6CO2+6H2O-> C6H12O6+6O2. What is the total number of moles of water needed to make 2.5 moles of C6H12O6?
A solution is prepared by adding 5.00 grams of an unkown compound to 217 g of cyclohexane (C6H12). This solution freezes at 4.5 degree C.
Based on this equation, what is the value of the Rydberg constant (R) in m-1? (5 significant figures)
What mass of aluminum metal can be produced per hour in the electrolysis of a molten aluminum salt by a current of 21 A?
Draw four different Lewis electron-dot formulas for the SeO2 molecule. (HINT: One should have two single bonds, two have a single and a double bond, and one two double bonds).
how many atoms are in a small piece of aluminum foil that has a mass of 0.100 g? the mass of an atom of aluminum is 27.0 amu
Does ammonium chloride added to water produce a simple solution, does the ammounium chloride dissociate or does a chemical reaction occur resulting in a new set of compounds.
There are two stereoisomeric 1,3-cyclobutane carboxylic acids. one can form a cyclic anhydride, the other can not. draw the structures of theses compounds and indicate which one can be converted to a cyclic anhydride. explain
The coal that is burned is a form of pure carbon. (Diamonds and graphite are other forms of pure carbon). A sample of coal is completely burned in a 10.0 L cylinder at a constant pressure of 1.10 atm and a temperature of 1000 oC.
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