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The 650 nm/590 nm intensity ratio for tetraphenylchlorin is 7, while the ratio for tetraphenyl porphyrin is .45. Predict the 650 nm/590 nm intensity ratio for a sample that contains 98% tetraphenylporhyrin and 2% tetraphenylchlorin.
How much heat is needed to vaporize 2.42 g of liquid oxygen if the molar heat of vaporization for oxygen is 1,629 cal/mole?
the specific heat capacity of silver is 0.235 jgmiddotk. its melting point is 962degc and its heat of fusion is 11.3
What is the expected molar solubility of silver phosphate, Ag3PO4 in water? B) What is the expected molar solubility, in ppt (parts per thousand), of lead(II) iodide, PbI2 in water
Determine the percent yield for the reaction between 3.74g of Na and excess O2 if 5.35g of Na2O2 is recovered
What is the mass of a glass empty beaker? What is the mass of a glass beaker with 60mL water?
plot the temperature distribution in all relevant dimensions for each side of the aluminum cylinder as a function of position for 5 different time intervals, ranging between (and explicitely including t=0 and t= infinity
How many grams of CaH2 are needed to generate 53.5 L of H2 gas if the pressure of H2 is 1 atm at 194 C.
Suppose that 2.00mL of isopently alcohol was reacted with excess acetic acid and that 2.00g of isopentyl acetate was obtained as product. Calculate the percentage yield.
Your body needs a small amount of sodium ion, Na1+, which your body gets by consuming table salt, or NaCl. Explain what role Na1+ plays in your body and what happens if you get too much or too little. Also find five foods that are high in sodium a..
A 100.-L flask contains a mixture of methane, CH4, and argon at 25C. The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650. Calculate the total kinetic energy of the gaseous mixture.
A volume of 40.0 of a 0.220 solution is titrated with 0.600 . Calculate the volume of required to reach the equivalence point.
A 14.0 L gas cylinder is filled with 8.00 moles of gas. The tank is stored at 9 degrees celsius . What is the pressure in the tank
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