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How many kilograms of chalcopyrite must be mined to obtain 325g of pure Cu?
Draw the three different plates you would expect from obtaining a TLC from ibuprofen on silica gel using (a) toluene, (b) ethyl acetate, and (c) methanol as the eluting solvents
The vessel and contents are returned to 130 degree celsius and the mixture of product gases (CO2, SO2, and unreacted O2) has a total pressure of 2.4 atm. Determine the partial pressure of each of these gases in the final product mixture
A system receives 625 J of heat and delivers 315 J of work. Calculate the change in the internal energy, ?E, of the system.
Write the names of the following compounds. Use proper spacing and spelling. (a) AgNO35 H2O (b) KCH3CO26 H2O (c) Ca(OH)24 H2O
1- teammonium chloride is sublimed prior to adding water toextract table al from sand. is it possible to reverse the
if .350g sample of cinnabar is heated the org decomposes completly to leave .302 of pure mercury metal.what is the empirical formula of cinnabar?
What are the possible values of the angular momentum quantum number l A.)represented by the formula: l = 2k + 1, where k is a positive integer B
Describe what is reduced and what is oxidized, balance the chemical equation by the half reaction method on both acidic and basic ways HCN +CrO4^2- = CNO^- + Cr(OH)4-
A 23.7-g sample of ethylene glycol, a car radiator coolant, loses 906 J of heat. What was the initial temperature of the ethylene glycol if the final temperature is 32.5 degrees Celsius (c of ethylene glycol=2.42 J/g*K)
Aluminum has a specific heat of 0.900 J/g·°C. How much energy is required to raise the temperature of 160. g of aluminum from 20.0°C to 183.0°C?
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of H2O will be: CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s)
what is the purpose of dissolving the acetanilide in glacial acetic acid prior to beginning the nitration reaction?
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