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Q: Once the solvent front reaches the top of the chromatographic paper, solvent begins to evaporate from the top edge of the paper and the remaining solvent continues to move up the paper. predict the effects of this situation on the locations of the resolution of the cation spots. (cations used in this experiment were Cu, Fe, Co and Ni)
What advantages and disadvantages exist for both organic and inorganic solar cells? Describe the main barriers or technical difficulties associated with each.
What is the molarity of the NaBr produced when 50.0 ml of 4.80 M NaOh is mixed with 150.0 ml of 160 M HBr?
The volume of the bulb was 1.524 liters. The temperature was 28.40 C, and the manifold pressure was 637.6 torr. What volume, in liters, would this gas sample occupy at STP?
Calculate the pH of the solution made by adding 0.50 mols of HOBR and 0.30mols of KOBR to 1.00L of water. The Ka value of forHOBR is 2.0x10 ^-9.
calculate Kc for the reaction below: 2P(g)+ 5Cl2(g) 2PCl5(g) The answer provided is 240. Why is that?
If we wish to prepare a 0.50M solution of NaCl how much water must be added to 1.0 mole of NaCl?
if a 1.00 g piece of gold (density = 19.32 g/cm^3) is hammered into a sheet 8.0 x 5.0 ft what is the average thickness of the sheet in meters?
one beaker contains pure water and the other beaker contains pure methanol at the same temperature. Which liquid has the higher surface tension and viscosity
What is the % barium in an alloy if it takes 22.0 mL of 0.875M sulfuric acid solution to react with all the barium in a 7.59 g sample of the alloy
If sealed glass bottle containing an organic solvent is dropped and breaks, pieces of glass may be propelled outwards because of build-up pressure that forms in the bottle. explain which is more dangerous a liquid pentane or liquid decane
How much heat is required to change a) 32.6 g of ice at 0.0 C into water at 0.0 C b) 32.6 g of water at 100.0 C into steam
HCl according to the following chemical equation? MnO2+4(HCl) --> MnCl2 + Cl2 + 2(H2O)
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