Is ibuprofen sold as a single enantiomer or a racemic mixture?
How many stereocenter(s) does the...
Is ibuprofen sold as a single enantiomer or a racemic mixture?
How many stereocenter(s) does the molecule have? Does ibuprofen
exist in diastereoisomeric form?
Ibuprofen is an anti-inflammatory with the formula C13H18O2.
Part A:
How many grams of ibuprofen are in 0.570 mole?
Express your answer using three significant figures.
Part B:
How many moles of carbon are in 15.0 g of ibuprofen?
Express your answer using three significant figures.
Part C:
How many moles of ibuprofen contain 1.18×1023 atoms
of carbon?
Express your answer using three significant figures.
How many electrons does a neutral potassium atom have? How
many protons? How many electrons does a neutral fluorine atom have?
What happens in the molecule of potassium fluoride?
QUESTION 9
If a restriction enzyme produces blunt ends, how many single
stranded nucleotides does it have hanging off each end of DNA
A.
0
B.
1
C.
2
D.
3
QUESTION 28
Synthetic biology predicts that the minimal set of essential
genes is in the tens of thousands.
A. True
B. False
QUESTION 31
Glucose inhibits the activity of what enzyme?
A.
adenylyl cyclase
B.
Beta-galactosidase
C.
cAMP
D.
RNA polymerase
How many electrons can a single orbital hold? How many orbitals
are found in a subshell of each of the following types?
s:
p:
d:
f:
How many electrons can a subshell of each of the following types
hold?
s:
p:
d:
f:
TeF5- anion.
a) How many valence electrons does Te have?
b) How many valence electrons does F have?
c) Write the Lewis structure of TeF5 - anion:
d) Assign formal charges to each atom in the Lewis structure of
the TeF5 - anion.
e) What is the hybridization of the orbitals on the central atom
in the anion TeF5 -?
d) Predict the molecular geometry of the TeF5 - anion: