td____ asked:


Sears Tower in Chicago = 1707 feet tall

To find how many Sears Towers buildings are equivalent to 1 mole of a Sears tower how would i do this..,,,,,,,,,,,?! Please help

Joe

No Responses to “How would i find how many Sears Towers there are in a mole of it?”

1. DavidK93 on July 8th, 2009 2:26 am

   This is a poorly worded question. A mole of Sears Towers would, by definition, contain 6.022 x 10^23 Sears Towers, because a mole of anything contains Avogadro’s number many of it. But because the height of Sears Tower is given, it seems to imply that the question is really asking “How many Sears Towers are in a mole of feet of skyscraper?” In that case, divide Avogadro’s number by the given number of feet.

2. Gee Waman on July 10th, 2009 1:14 pm

   Just be happy with one..

3. David F on July 11th, 2009 10:27 am

   That’s like asking “How many eggs in a dozen (eggs)?”, or “How many Sears Towers in a dozen (towers)”

   Doesn’t matter what the object is, a dozen is always 12, and a mole is always 6.022 x 10^23.

4. saarthak k on July 14th, 2009 3:08 am

   6.022 x 10^23…

   doesn’t matter what the ht size or shape is…

   one mole of anything is 6.022 x 10^23 units of it…..rest is irrelevant

5. m w on July 16th, 2009 6:01 pm

   1 mole = 6.022×10^23 of anything

   1 mole of sears towers = 6.022×10^23 sears towers.

   if you want to know how many feet that is end to end…

   6.022×10^23 x 1707 ft = 1.03×10^27 ft

   *********
   that’s a very large number….

   1.03×10^27 ft x (1 mi / 5280 ft) x (1 light year / 5.87×10^12 mi) = 33 billion light years.

   the universe is believed to be 93 billion light years in diameter. so a mole of sears towers stacked end to end would reach about 1/3 of the way across the universe