Which statement correctly describes an atom of the element helium? a. an atom of helium has a full outer energy level and is therefore unusually reactive. b. an atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. c. an atom of helium has its valence electrons in its first energy level. d. an atom of helium has eight electrons in its outer energy

How do forces between particles in gases compare to forces in the other states of matter? o a. the forces in gases are stronger than forces in solids but weaker than forces in liquids. o b. the forces in gases are weaker than forces in solids but stronger than forces in liquids. o c. the forces in gases are weaker than forces in solids and liquids. o d. the forces in gases are stronger than forces in solids and liquids. submit

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?