Which statement describes the difference between an ionic bond and a hydrogen bond?
A. An ionic bond forms when electrons are completely transferred
between two ions, while a hydrogen bond forms between partially
positive and partially negative atoms.
B. An ionic bond forms when two atoms share valence electrons,
while a hydrogen bond forms between partially positive and
partially negative atoms.
C. An ionic bond forms when electrons are completely transferred
between two ions, while a hydrogen bond forms when two atoms
share valence electrons.
D. An ionic bond forms between partially positive and partially
negative atoms, while a hydrogen bond forms when electrons are
completely transferred between two ions.
SUBMIT

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

What is another way to determine mass times acceleration?