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]: h2so4 and nah h2so4 pocl3 and pyridine pocl3 pocl3 and h2so4 pyridine [2]: pyridine and pocl3 br2 and h2o bh3 pyridine nah h2o [3]: h2so4 and nah pocl3 pyridine pocl3 and pyridine pocl3 and h2so4 nah

The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

Joan writes four numbers on the board in standard form, and then she writes their scientific notation