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Which of the following substances has a standard heat of formation of zero? A. pb @ 1000 degrees C B. C3H8 @ 25.0 C and 1 ATM pressure C. Solid glucose @ room temperature D.N2 @ 25.0 and 1 atm pressure
A sample of ammonium dichromate contains 2.25 moles of hydrogen atoms. How many moles of oxygen atoms are in the sample
explain why there is a difference in spectrophotometric response during titration before and after the equivalence point by placing the statements below into the appropriate categories.Now, calculate the concentration of apotransferrin present in ..
What is the hybridization of each carbon for the following structure? Please explain each one and provide the line structure. Supposedly there should be two hybridized sp2 and two hybridized Sp3
a reaction has H degree = -14.7 kg and S degree of 35.7 J/k x mol . the reation will be one of the following, Exergonic or have a very small keq or have a positive G degree
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
Write the Net Ionic Equation and determine the standard potential for the reaction between permanganate and tin(II). From the potential
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of XeF2
Calculate the pH of the solution resulting from the addition of 20 mL of 0.10 M NaOH to 100 mL of 0.10 M HCN (Ka = 4.9x10^(-10))
Draw three possible structures for the B3H8- ion. Clearly indicate any three-center bonds. Which structure is most plausible (considering molecular orbital theory)
Gas was obtained by boiling liquid nitrogen stored in a 175.0 L tank. What volume ofN2 is released at 0.940 atm of pressure and 25 C from a tank full of liquid N2(d=0.808g/mol)
solution is needed to just neutralize excess acid after 20 mL of HCl was added to 1. g of the antacid, how many moles of acid can the antacid counteract per gram.
What is the final pressure (atm) of a 3.05 L system initially at 724 mm Hg and 298 K, that is compressed to a final volume of 3.00 L at 273 K
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