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If a salty crude sample was analyzed to have 110.6 ppm salt, calculate the pounds of salt per 1000 bbls of crude
How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100 worth of gold.
what will be the % yield after one crystallization step using the minimum amount of solvent A that is required for the crystallization step?
Some of the unknown fails to dissolve b)The thermometer is out of calibration and reads .75C higher than it should over the entire temperature range. c) The test tube is not dried before it is weighed
In the equation below, fill in the blanks with the appropriate whole numbers to provide a balanced equation: ___ EtCH=CHEt + ___ KMnO4 --> ___ EtCO2K + ___ MnO2 + ___ H2O + ___ KOH
How many milliliters of a 120 mL solution of 1.51 M BaCl2 must be used to make 16 mL of a solution that has a concentration of 0.3 M Cl-?
A reaction mixture containing 20 mM O-acetyl serine, 50 mM NaCl, 50 mM HEPES buffer (pH 7.6), and O-acetyl serine acetylase is incubated in 37C until O-acetyl serine is completely hydrolyzed. What is the pH of the mixture at the end of the reactio..
How much PV work is done, and what is the value of ?E for the reaction of .50 mol of H2 with .25 mol of O2 at atmpospheric pressure if the volume change is -5.6L
N2+O2->2NO At 2000 degress C, Kc for the reaction is 4.1*10^-4 and delta H= 180.6Kj. What is the value of Kc at 65 degrees C
determine what concentration of oh - is needed to dissolve 0.015 mol ofnbspznoh2 zinc hydroxide in a liter of solution
Which of the bonding forces from the list above would need to be overcome to convert CCl4 from a liquid to a gas? (Enter the letters in order of all that apply, e.g. AB, ABD, ACDE, etc.)
Predict which of the compounds should undergo a more rapid reaction with potassium tert-butoxide. EXPLAIN your REASONING and give the product of the reaction?
When chromium crystallizes, it forms body-centered cubic cells. The unit cell edge length is 288.7 pm. Calculate the density of chromium
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