Posted by Navroz on Saturday, October 23, 2010 at 6:29pm.
I'm not good at counting these things. You really need a math man to answer this; however, I count 9. Maybe Mathmate, Reiny, or Bob Pursley will do this right.
You need two H, one O
ways: 3*2*2=12 Three choices on O, two choices each H.
I hate to be dense about this BUT, I can't count but 9.
1 1 16
1 1 17
1 1 18
1 2 16
1 2 17
1 2 18
2 2 16
2 2 17
2 2 18
2 1 16
2 1 17
2 1 18
Which gives 12; however, the last three, considering that they are H2O molecules, are the same as set #2 but reversed. It doesn't make a new molecule of H2O, so I still count only 9.
Related Questions
Chemistry - There are 3 known isotopes of Hydrogen and 3 stable isotopes of ...
chemistry - the element boron has two naturally occurring isotopes with masses ...
chemistry - Copper has two naturally occurring isotopes. Cu-63 has a mass of 62....
Chemistry - Sorry for posting this again, I dont know if the question was ...
Chemistry - Which element has no stable isotopes? 1. (subscript)27 Co 2. (...
chemistry - The atomic mass of chlorine is listed as 35.454 amu on the periodic ...
Chemistry - The atomic mass of chlorine is listed as 35.454 amu on the periodic ...
chemistry - The atomic mass of Eu is 151.96. There are only two naturally ...
Science (atoms) 8th grade - Chlorine has an average atomic mass of 35.45 amu. ...
Chemistry - Silver has an average atomic mass of 107.9 u and is known to have ...
For Further Reading
