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3030g of Erythrosin B (M=879.9 g/mol) was added to enough water to make 100ml of solution A. 5ml of solution A was added to enough water to make 100ml of solution B. Finally 5ml of solution B was added to enough water to make 100ml of solution C. What was the concentration of Erythrosin B in solution A,B, C?
three solutions are mixed together to form a single solution. one contains 0.2 mol pbch3coo2 the second contains 0.1
Draw the mechanism (curvy arrows) for the formation of the carbocation intermediate formed from reaction of NO2+ with toluene at the ortho position, and show the resonance forms of the resulting carbocation.
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-, and ignore activity corrections.
How many grams of oxygen would be required in the combustion of propane to produce 582 kJ of heat?
The major industrial method for the preparation of elemental phosphorus is heating a mixture of phosphate rock, carbon, and sand in an electric furnace. The chemical reactions can be represented by
Osmosis is the process responsible for carrying nutrients and water from groundwater supplies to the upper parts of trees. The osmotic pressures required for this process can be as high as 20.1 atm
The solubility of an ionic compound M2X3 (molar mass = 200. g) is 2.3 multiplied by 10-17 g/L. What is Ksp for the compound?
For the reaction what is the cell potential at 25 if the concentrations are 0.653 , 0.173 , and 0.852 and the pressure of is 6.80
A student doing this experiment obtained a value of 110% for the recovery if copper. What is the possible explanation for this anomalous result
The energy of electron-in-a 1 m box is given as (h^2*n^2)/(8mL^2). find the transition energy form n=3 to n=2. The mass of electron is 9.109e-31 kg and planck constant 6.626e-34 Js
How long will it take for 20% of the U-238 atoms in a sample of U-238 to decay. If a sample of U-238 initially contained 1.4×1018 atoms when the universe was formed 13.8 billion years ago, how many U-238 atoms will it contain today
Determine the concentrations of K2SO4, K , and SO42- in a solution prepared by dissolving 2.11 × 10-4 g K2SO4 in 2.00 L of water. Express all three concentrations in molarity.
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