Why are some resources, like fossils, found in some places and not in others?

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Gymnast always perform on padded mats. how does the mats protect the gymnast