Which describes the polarity in a water molecule?

partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms
partial negative charge on the oxygen atom because it pulls electrons from the hydrogen atoms
partial positive charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms
partial positive charge on the oxygen atom because it pulls electrons from the hydrogen atoms

The answer is B. on edge

Explanation:

B. partial negative charge on the oxygen atom because it pulls electrons from the hydrogen atoms

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.