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Two 0.500mL aliquots are added to 5.000mL portions of water. One of these portions contains an additional 10.0ul of 0.05000M Fe2+. The total volumes of both solutions are 5.500mL. The net absorbances are 0.321 and 0.581 respectively. What is the iron molar concentration in the serum sample? Not that the following relationship may be used: Aunk/Aunk+std - Cunk/{Cunk+Cstd}
what happens if cellulose is reacted with maleic anhydride C4H2O3? Again, how is the cellulose molecule/structure altered and what are the reaction by-products?
Construct the MO diagram for Cr(CO)5, considering only s donation from the CO ligands. Clearly label all atomic and molecular orbitals. Put in the correct number of electrons. What is the bond order? Is this consistent with the structure?
when 9.8 g of aluminum oxide (Al2O3) decomposes, how many grams of aluminum metal are produced?
A piece of a newly synthesized material of mass 25.0g at 80 degrees C is placed in a calorimeter containing 100g of water at 20 degrees C. If the final temp of the system is 24 degrees C, what is the specific heat capacity of this material?
Estimate the mass of water that must evaporate from the skin to cool a body by 0.10, if the mass of the body is 91 and its heat capacity is 4.0 . (Assume that the heat transfer is 100 efficient.)
Find the Diffusivity of Ammonia gas(A) in a mixture of nitrogen(B) and hydrogen(C). D(AB)=3.28x10^(-5)m2/s and D(AC)=1.093x10^(-4)m2/s.
Draw the Lewis structure for C1F 2 + (small s at bottom and small + at top) What are its electron-pair and molecular geometries? decribe the bonding in the molecule in terms of hybrid orbitals.
What mass of this substance must evaporate in order to freeze 170 of water initially at 23? (The heat of fusion of water is 334 the specific heat of water is 4.18 .
Calculate the concentration of the Ca2+ in ppm (or mg/L) using the correct number of significant figures assuming the 1.0 HCl has a density of 1.000 g/mL. Show these calculations clearly in your notebook and on your report form. Recall that calciu..
Find the Qsp if The solubility product of Ag 2 CO 3 =6.2 × 10-12. Also determine whether a precipitate forms in the solution (Assume 20 dropsper milliliter.)
Oxone is sometimes used in keeping swimming pool water clean. Describe using chemical reactions how Oxone keeps swiming pool water clean
In an earlier problem we described the reaction of ammonia with oxygen to form nitrogen monoxide, NO.
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