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An unknown compound has a forula of CxHyOz. You burn 0.1523 g of the compound and isolate 0.3718 g of CO2, and 0.1522 g of H2O. What is the empirical formula of the compound? If the molar mass is 72.1 g/mol what is the molecular formula?
In another experiment it was determined that for each mole of hydrocarbon, 7 moles of oxygen gas are consumed and 5 moles of CO2 gas and 3 moles of H2O liquid are produced. Find ?H per mole of this hydrocarbon (in kJ) at 298 K
How many grams of sucrose (C12H22O11) must be added to 509 g of water to give a solution with a vapor pressure 0.723 mmHg less than that of pure water at 20 degrees C.
In high spin complexes, the crystal field splitting energy is small and in low spin complexes, electrons are concentrated in the lower energy orbitals.
Free radicals are also important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the action of sunlight on air pollutants, is formed in part by the following two steps.
How many moles of magnesium are needed to react with 16.0 g of O2?
what volume of bleach (6%w/v=6g/100ml) would be required to oxidize 5.0 mL of methanol (density 0.890 g/ml) to methanone?
Using the tools you have at hand (a melting point apparatus and TLC setup), what other data could you collect to test your hypothesis from part a? Give two possibilities.
Use the standard enthalpy change of formation data to calculate the standard enthalpy change of combustion of C5H12O.
One beaker contains 10.0 mL of acetic acid/sodium acetate buffer at maximum buffer capacity (equal concentrations of acetic acid and sodium acetate), and another contains 10.0 mL of pure water.
Suppose you have a sample of sodium weighing 11.62 g. How many atoms of sodium are present in the sample?
The reaction 2NO+Cl2=2NOCl is carried out in a closed vessel. If the partial pressure of NO is decreasing at the rate of 20 torr/min, what is the rate of change of the total pressure of the vessel?
The carbon-14 activity of some ancient Native American corn was found to be 7.0 disintegrations per minute (dpm) per gram of carbon. If present-day plant life has 16 dpm per gram of carbon
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