The preferred arrangement of electrons in a molecular structure can be determined by calculating the of each atom in the molecule. If the dipole moments from polar covalent bonds don't cancel, then the molecule will be .
When a molecule can have multiple structures with in different positions, the molecule has resonance.
Repulsion between and electrons in covalent bonds causes some molecules to have a bent shape.

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

How many neutrons does a atom of cobalt have?

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant