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Question: An industry is required to clean up 4.0 t of a by-product containing both toxic and inert material. The toxic content is 15%; the rest is inert. The by-product is treated with 45 t of solvent resulting in an amount of dirty solvent containing 0.35% toxic material and a discard containing 1.2% toxic material, some solvent, and all the inert materials. Determine the amount of dirty solvent produced, the percentage of solvent in the discard, and the percentage of toxic substance removed in the discard.
What is the NMR spectrum of benzene, Suppose Dewar,Ladenburg,and Kekul?? had had a 13 C NMR spec- trometer.How many signals would the various candidates
If 2.0 grams of calcium chloride react with 3.5 grams of sodium hydroxide in a double replacement what is the balanced equation
a steel cylinder holds 150.0 mol argon gas at 25 degrees c and a pressure of 9.53mpa. after some argon has been used
A certain laser uses a gas mixture made up of 9.00 g HCL, 2.00g H2, and 165.0g Ne. What pressure is exerted by the mixture in a 75.0 L tank at 22 degree C?
Use a table listing the ordinate and area for the normal or (gaussian) distribution error curve to find the fraction of a gaussian population within the following boundaries for each one: 1) mu to -0.5sigman 2)-sigma to -0.5sigma
How would you make a buffer with a volume of 2.0 L, pH of 5.0 and a strength of 0.25 M using 5.0 M acetic acid stock solution (Ka = 1.8x10-5) and sodium acetate ( NaO2C2H3 available as a solid salt FW = 82 g/mole).
The resulting W3 was transferred to 500.0 mL of 1.00 M HCl. A 100.00 mL aliquot of the HCl solution required 10.13 mL of 0.08840 M potassium permanganate (KMnO4) to reach the purple endpoint. A blank required 0.18 mL. Determine the percent WO3 in ..
The standard heat of formation \Delta H^\circ _{\rm f} is defined as the enthalpy change for the formation of one mole of substance from its constituent elements in their standard states. Thus, elements in their standard
what it is perscribed for 3.Mechanism of action( for example: how it binds to biological molecules, how it may inhibit enzyme activity.)
give answers with units and to correct significant figures.1 how many years are there in 1 mole of seconds? use
The molar solubility of magnesium carbonate is 1.8 ? 10-4 mol/L. What is Ksp for this compound
Construct a molecular-orbital diagram for a chain containing six lithium atoms and use it to answer the following questions. How many molecular orbitals are there in the diagram? How many nodes are in the lowest-energy molecular orbital?
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