How do i draw 4 methane molecules ? ?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

What shape would a molecule with two bound groups and two lone pairs have?

Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope