Click the "draw structure" button to launch the drawing utility, and be sure to answer all parts. Devise a synthesis of the epoxide B from alcohol A. a arrow b A B (Hint: Determine what alkene is needed to make the epoxide, and begin the synthesis with a reaction that yields the needed alkene from an elimination reaction.) a [1] arrow draw structure ... [2] darrow b [3] larrow draw structure ... [1]: POCl3 and pyridine H2SO4 and NaH POCl3 pyridine H2SO4 POCl3 and H2SO4 [2]: pyridine and POCl3 H2O pyridine NaH Br2 and H2O BH3 [3]: pyridine POCl3 POCl3 and pyridine POCl3 and H2SO4 NaH H2SO4 and NaH

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon