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In our Ochem lab for nitration of bromobenzene we didn't further seperate the product mixture of 4-bromonitrobenzene and 2-bromonitrobenzene and yet we have to calculate the percent yield of the mi
What is the concentration of CH3COOH (Ka = 1.8x10-5) in 50.0 mL of a 0.0187 M CH3COOH solution
Explain why the melting point of 4-bromonitrobenzene is considerably higher than that of the 2-isomer
Work function of chromium metal is 4.37 eV. What is the wavelength of radiation that must be supplied to metallic chromium to release and electron with kinetic energy of 2.05*10^-18 J
A chlorine atom can occupy one of the nine possible sites. When a bromine is added to the system it can occupy one of hte eight sites not already occupied by the chlorine so there are 9 x 8 or 72 po
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
If a 1-mole sample of a real gas from a compressed gas cylinder goes from 230 atm to 1 atm and from a volume of 1cm3 to 195cm3, what is the entropy change for the expansion if it is assumed to be is
A sample of 2.50 mole N2 is originally confined to 20 L at 270 K and then undergoes adiabatic expansion against a constant pressure of 600 Torr until the volume has tripled. Calculate q, w, ?T, ?U,
What is the final temperature of 0.222 mole of an ideal gas that performs 125 kJ of work adiabatically if the initial temperature is 235°C
What mass of sodium phosphate would have to be added to 2.0 of this solution to completely eliminate the hard water ions
What mass of sodium phosphate would have to be added to 2.0 of this solution to completely eliminate the hard water ions? Assume complete reaction.
A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quantities involved in the process are shown.
Draw the Lewis structure for NOF. Nitrogen is the central atom. Include all lone pairs of electrons.
When 3.00 mol of benzene is vaporized at a constant pressure of 1.00 atm and at its normal boiling point of 80.1 degreesC, 101.8 kJ are absorbed and the P(delta)V for the vaporization process is equ
When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose that you are planning a backpacking trip and will need to boil 38L of water for your group.
The beginning of the quetsion The value is called Avogadro's number. The term formula unit is a generic phrase that can mean a molecule, atom, ion, or whatever is represented by the chemical formula
The silicon in the plate is a mixture of naturally occurring isotopes. One of the those isotopes is silicon-30, which has an atomic mass of 29.97376 and a percent natural abundance of 3.10.
How do i calculate the aveage current that flowed thorugh an electrolytic cell from the delta [OH-] (3.910), volume of the solution (30mL) and the time of electrolysis (15min)
The following questions concerning electrolysis of molten sodium hydride (NaH), the products are Na(?) and H2(g). Which of teh following statement(s) is (are) correct
Assuming that a neutron star has the same density as a neutron, calculate the mass (in ) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.14.
Draw the principal organic product expected when 2-methylthiophene reacts with HNO3. Show minimized formal charges, if applicable.
the combining of the fragments which remain after the loss of an oxygen from the carboxylic acid and two hydrogens from ammonia or an amine.
A solution of a protein contains 0.382 grams of the material in 1.00 L of solution. At a temperature of 25°C,this solution has an osmotic pressure of 1.07 torr. Calculate the molar mass of the pro
Calculate the mass (in grams) of sodium azide required to generate enough nitrogen gas to fill a 57.0-L air bag at 1.37 atm and 25.0 degree C
Under what conditions would you expect a real gas to be (a) more compressible than an ideal gas; (b) less compressible than an ideal gas