What was the atomic theory about? A. The properties of the nucleus
B. The existence of isotopes
C. The structure of the atom
D. The existence of electrons

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Draw the lewis dot structure for each of the following polyatomic ions

For the reaction c6h14(g) & longrightarrow; c6h6(g) + 4h2(g), δp(h2)/δt was found to be 2.5 x 10-2 atm/s, where δp(h2) is the change in pressure of hydrogen. determine δp(c6h14)/δt for this reaction at the same time.