Which of these is a major drawback of using fuel cells in a car? A. a lack of hydrogen filling stations

B. a drop in reliance on petroleum products

C. increase in water vapor into the atmosphere

D. an increase in the use of rechargeable batteries

an

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size

Stage in which a typical star has completely stopped fusion