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Think benzene (C6H6) in the gas phase. State the reaction for breaking all the bonds in C6H6 (g) and find out the enthalpychange for the reaction.
the atomic weight of a newly discovered el- ement is 98.225 amu. it has two naturally occuring isotopes. one isotope
Identify the charged groups in the peptide illustrated below at pH 1 and pH 7. Explain what is the net charge of this peptide at these two pH values
a student is asked to prepare a buffer solution at ph 8.60 using one of the following weak acids ha kanbsp 2.7 x10-3
A 4.78- sample of aluminum completely reacts with oxygen to form 6.67 of aluminum oxide. Use this data to calculate the mass percent composition of aluminum in aluminum oxide.
A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell voltage of 0.738 V. If the silver-silver chloride electrode is replaced with a saturated calome..
Calculate the % yield of Al2(SO4) from the reaction: 2Al(OH)3(s) + 3H2SO4(aq) -> Al2(SO4)3(s) + 6H2O(l) given that 205 g of Al(OH)3 react with 751 g of H2SO4 to yield 252 g Al2(SO4)3.
Calculate the de Broglie wavelength of an electron of an electron accelerated through a potential difference of (a) 100V and (b) 100kV.
The student's body temperature dropped from 40.0C to 37C. Presume the specific heat of the student to be 3.77 J/g*C, Explain what was the final temperature of the water
Determine what percent by weight of sodium carbonate does it contain If the specific gravity of the sodium carbonate solution = 1.25,?
A solution of HCl in water conducts an electric current , but a solution of HCl in hexane does not. explain this behavior in terms of ionization and chemical bonding
The hottest temperature yet recorded in Phoenix AZ was 122 dgrees F what is the temperaturein degrees C and K
a protein subunit from an enzyme is part of a research study and needs to be characterized. a total of 0.180 g of this
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