« on: May 13, 2005, 02:07:36 PM »
E was my first choice too. Postulate is defined as - " to assume or claim as true, existent, or necessary." Let me provide another couple of sentences that come before the one i wrote because it might help:
Acting on the hypothesis that pitchblende must contain at least one other radioactive elemnt, Curie was able to isolate of pair of previously unknown elements, polonium and radieum. Turning her attention to the rate of radioactive emission, she discovered that uranium emitted radiation at a consistent rate, even if heated or dissolved. Based on these results, Curie concluded that the emission rate for a given element was constant. Furthermore, because radiation appeared to be spontaneous, with no discernible difference between radiating and nonradiating elements, she was unable to postulate a mechanism by which to explain radiation.
does that help anyone? doesnt help me. i still dont see why E is wrong.