My text has a review of some chemistry before getting into the biology bit. I have come to a question "what are 3 characteristics/features of an organic compound." My book seems to only have the general they all have carbon. The rest goes into depth about the ...
September 20, 2007
Calculating Average Atomic Mass
Rubidium has 2 common isotopes, Rb 85 and Rb 87. If the abudance of Rb 85 is 70 percent and the abundance of Rb 87 is 30 percent, what is the average atmoic mass of rubidium? For the above question, does this mean I would multiple 85 by .70, 87 by .30, and average those two ...
September 8, 2007
The definition of aberrant means "deviation from the norm." Which means, if you had an aberrant day, your day was more unique and different than usual. I'm guessing that word in the sentence does make sense.
September 8, 2007
1. The price of gold is 200 dollars/oz. How much did 1 g of gold cost that day? (1 oz = 28.4 g)Use dimensional analysis. 2. How many minutes does it take light from the sun to reach Earth? (Distance from sun to Earth is 93 million mi, speed of light= 3 x 10^8 m/s) Use ...
August 25, 2007
The line through (-2,4) that is perpendicular to the x-axis? If you are asking if the line through (-2,4) is perpendicular to the x-axis, then, yes, I think it is. Do you know why, though? Hope this helps. The line perpendicular to the X-axis through (-2,-4) would have all ...
February 15, 2007
Geometrical Formula Help
Hi! Can anyone please send me a link or show me how to find a formula that will find any point between two other points? Thank you, your help is greatly appreciated :)
January 13, 2007
PLEASE SOLVE MY RIDDLE
What is ugly on the inside but beautiful on the outside? It's the heart of humans. Sometimes the heart of humans can be evil or good. Many people thought that as long as someone looks beautiful on the outside that is enough to determine a person's worth. But the truth ...
December 24, 2006