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What are some of the side products that can occur in the preparation of meso-Tetraphenylporphyrin and Metalloporphyrin using pyrrole and benzaldehyde in acetic acid?
What volume of oxygen gas is required to react completely with 1.32 mol of iron according to the following reaction at 0 C and 1 atm
A plot of ln k vs. 1/T for the decomposition of dinitrogen pentoxide yielded a slope = -7.85 x 105 and a y-intercept = 35.2. whats its activation energy
What is the width of a 1275 gram piece of aluminum with an area of 18.5 square meters and a density of 2.7 g/cc
Determine if the sample has non-volatile impurities (dissolved in it) b. If found to contain such impurities, determine a suitable method for its purification
How many grams of .49% wt% aqueous HF are required to provide a 25% excess to react with 25 mL of .023 M Th^4+ by the reaction Th^4+ + 4F^- --> ThF4
Find the heat transferred (in kJ) when 5.50 L of ethylene glycol (d = 1.11 g/mL, see Table 6.2 for c) in a car radiator cools from 37.7°C to 23.0°C.
determine whether a solid forms when solutions containing the following salts are mixed. if so write the net ionic equation for the reaction. a)Na3PO4(aq) and AgNO3(aq). b)K2SO4(aq) and Na2CO3(aq). c)Pb(NO3)2(aq) and Na2CO3(aq). d)BaCl2(aq) and KO..
below which there is too little fuel to support combustion. For propane, the LFL is 2.1 mol-%. What is the mol fraction of propane in the air at the stoichiometric concentration?
What did you observe in the reactions of zinc with 4 different acids: HCL, H2SO4, H3PO4, and CH3COOH
In solution in 6EB in Atkins 9th edition is not clear to me. The equation for the location of partile in the box is different from the one that is in the book.
The absorption coefficient of a new complex FeX2 (X=1,10 phenanthroline, MW = 180.21) was measured as 1,400 / M cm at 355 nm. what would be the measured absorbance at this wavelength
A gas filled balloon with a volume of 12.5 L at 0.90 atm and 294 K is allowed to rise to the stratosphere where the temperature is 268 K and the pressure is 1.0 millibar. What is the final volume of the balloon. (1.0 atm = 1.013 bar).
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