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The molar mass of an oxygenated hydrocarbon substance is 88.0 g / mole.Its composition is as follows:O:36.4%,H :9.0%,C:54.6%.Calculate the empirical formula and molecular formula.(use atomic mass C=12.0,H=1.0,O=16.0)
There are four possible p orbital arrangements for the butadiene molecule. Which of the following statements about these orbitals is not correct? A) The four arrangements differ by the number of anti-bonding interfaces in each arrangement.
What volume will 5.6 moles of Sulfur hexafluoride (SF6) gas occupy if the temperature and pressure of the gas are 128 deg C, and 9.4 atm?
Which of the following means of transport would be used to move a medium sized molecule (like an amino acid) from a low concentraion on the outside of a cell to a high concentraion
What volume of hydrogen gas, in liters, is produced by the reaction of 4.17g of iron metal with 60.0 mL of 3.00M HCl?
A gas has a pressure of 4.82035 atm when its volume is 2.75 L. What will the pressure be when the volume is changed to 1.91015 L.
A 0.366-g sample of an unknown reducing agent required 30.0 mL of 0.100 N (normality) KMnO4 for titration. What is the equivalent weight of the reducing agent?
Calculate the quantity of energy produced per mole of -235 (atomic mass = 235.043922 ) for the neutron-induced fission of -235 to produce -137 (atomic mass = 136.9253 ) and -97 (atomic mass = 96.910950 ). E= J/mol U235
you have 2.50 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. determine the concentration of the sugar solution after the water has been added.
What formula of the percipitate formed? and what do you observe upon the addition of dilute HNO3 and what equillibrium has been disturbed? would you expect lead chloride to dissolve in dilute HNO3? Explain
The B4O5(OH)4^2- ion present in 5 ml of a saturated Na2B4O5(OH)4 solution at a measured temperature is titrated to the bromocresol endpoint with 3.25 ml of .291 M HCl.
To find the pKa of X-281, you prepare a 0.087M test solution of X-281. The pH of the solution is determined to be 2.40. What is the pKa of X-281?
Equilibrium constant from standard potential data, Calculate the equilibrium constants of the following reactions at 25°C from standard potential data
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