Organic Chemistry Test One
chlorine has two isotopes, 35Cl (34.969 amu) and 37Cl (36.966 amu). 75.77% of chlorine is 35Cl and 24.23% is 37Cl. what is the atomic weight of chlorine?
(% naturally occurring x atomic mass) + (% naturally occurring x atomic mass) (.7577 x 34.969) + (.2423 x 36.966) = 35.453
What is unique about carbon
C loves to bond to other carbon atoms
what is the most stable ring system
6-sided
formal charge
valence e- - (lone pair + # bonds)
how do we group elements
based on the way they chemically behave
How many Ve- do the following have a. boron b. nitrogen c. oxygen d. flourine
a. 3 b. 5 c. 6 d. 7
Oxygen has three isotopes. 16O, 17O and 18O. the atomic number of oxygen is 8. how many protons and neutons does each of the isotopes have?
atomic # = # of protons mass # = # protons + # neutrons. ALL ISOTOPES HAVE THE SAME ATOMIC NUMBER so 16 O has 8 protons and 8 neutrons 17O has 8 protons and 9 neutrons 18O has 8 protons and 10 neutrons
how many bonds does carbon have? oxygen?
four, two
what is the most important organic molecule
glucose
