Avalid lewis structure of cannot be drawn without violating the octet rule. a valid lewis structure of cannot be drawn without violating the octet rule. sbf3 if3 so42− pf3 nf3

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)