Answer:
In a Lewis symbol, the symbol for the element is used to represent the atom and its core electrons. Dots placed around the atom are used to indicate the valence electrons. ... In 1916, Gilbert Newton Lewis, an American chemist, suggested that molecules were formed when atoms shared pairs of outer electrons.
Explanation:
Sunlight i think thats the answer
72g H2O x 1 mol H2O/18.02g H2O = 3.99 mol H2O
Vinegar is an heterogeneous mixture
Explanation:
