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An insecticide has the weight percents C=55.6%, H=4.38%, Cl=30.8% and O=9.26%. the approximate molar mass is 345 g/mol. what is the molecular formula?
suppose you have a canister of gas z. the pressure of the gas is 500. torr when the temperature is 17.0 c. what happens
A solution is found to be 0.0370% by weight AlF3. What is the concentration of the F1- ion expressed in ppm
ethanol vapor at 0.5 bar and 78 degrees celcius is compressed isothermally to 2 bar in a reversible process in a closed system a) draw a qualitative PV graph and show the path of the process.
How many moles of steam are produced at 2.00 atm and 202.0 by the complete combustion of 12.50 L of methane gas?
Propose a structure for the compound with the following formula that is consistent with the IR and 1H NMR data shown:
what is the volume in milliliters of 20.0 g of acetone if the density of acetone is .791 g/ml?
Oxygen at 150 K and 41.64 atm has a tabulated specific volume of 4.684 cm3/g and a specific internal energy of 1706 J/mol.
Carbon disulfide is a foul-smelling solvent that dissolves sulfur and other nonpolar substances. It can be made by heating sulfur in an atmosphere of methane.
The reaction CH3CH2NO2 + OH- → H2O + CH3CHNO2- obeys the rate law d[A]/dt = -k[A][OH-], where A denotes CH3CH2NO2. It takes 0.5 min for one percent of the A to react at 25°C.
A hydrochloric acid solution is standardized using 0.500g of sodium carbonate, Na2CO3. Find the molarity of the acid if 29.50mL are required to reach a phenolphthalein endpoint.
Identify the oxidizing and reducing agents for this equation. 2HNO3 (aq)+ 2S (s) + H20 (l) --> 2H2SO3(aq)+ 2N20(g)
A 750 mL vessel contains 2.50 g of an unknown gas at a temperature of 0 C and pressure 300 mm Hg. A small sample of this gas is removed from the vessel and transferred into a new vessel at 500C and pressure 760 mm Hg. What is the density of gas af..
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