Ahydrocarbon contains by mass 82.7% carbon and 17.3% hydrogen. whats the molecular formula ?

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?

How many valence electrons are in atom of radon?

Chortling is used to clean water. another possible atom that would also work is a. sodium b. sulfur c. bromine