A student wants to determine if different types of car wheels impact how far a car will travel after leaving a ramp. The same car and the same ramp or used for each trial run. The data collected are shown in the table. A. Large plastic Wheels

B. Large rubber Wheels

C. Small rubber Wheels

D. Small plastic Wheels

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.