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A 47.60 g sample of liquid magnesium at 738.0 °C is poured into a mold and allowed to cool to 28.0 °C. How many kJ of energy are released in this process
The atomic weight of a newly discovered element is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu.
Which of the following terms define(s) an acid according to the Bronsted-Lowry theory?
Within this analogy, discuss how the shielding by core electrons is analogous to putting a frosted-glass lampshade between the lightbulb and your eyes, as shown in the illustration.
Synthetic polypeptides can assume an helical structure under appropriate conditions. Indicate whether polylysine and polyglutamate form an helix
Calculate the molar enthalpy change ?H~rxn for the dissolution of KNO3 in water. Calculate in the error in ?H~
Calculate the delta G of a reaction at T=25 degrees C that has an equilibrium constant (K) of .56. Is the delta G value negative, positive
Procedure for Using Hess's Law; for Part C, What is the enthalpy for the following reaction
You are a hazmat responder and walk into what appears to be a meth lab. There are flasks of iodine, White Gas fuel, Sodium Hydroxide, Nitric Acid, and a box of ephidrine.
Illustrate the structures of the 6 bromoalkenes (with the molecular formula C5H9Br ) that have a branched C chain, and that show neither chirality nor E,Z isomerism.
Which of the following inhibits the enzyme that converts the conversion of fructose-1,6-bisphosphate to fructose-6-phosphate in the LIVER.
A mixture consisting of 50 grams of ethanol and 50 grams of water is distilled using an efficient column. How much water will remain in the distillation flask the instant all of the azeotrope
Determine How much Na2EDTA x 2 H2O must be weighed to form exactly two litres of 0.0500 M solution? FW=372.24
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