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What gang is formed after the Mutant Leader’s defeat?

This is a BONUS question worth 5 points. Determine the weighted average atomic mass for Silicon given the following mass and abundance data.  Express to the correct number of significant figures based on the data given.    Show your math steps! Isotope Atomic mass % Abundance Si-28 27.9769 amu 92.23 % Si-29 28.9765 amu 4.68 % Si-30 29.9738 amu 3.09 % Math setup = 3 points Answer = 1 point Sig Figs = 1 point

The electron pair geometry and molecular geometry (in that order) for SeO2 is  

Using the balanced equation below, answer the following question: BaCl2 + Na2SO4 

Whose death was responsible for Batman’s retirement?

What “extreme” activity is Bruce Wayne participating in the novel’s opening scene? 

Which one of the following is an ionic crystalline solid?

What is the molecular shape of a carbonate ion, CO32-?  

When the Lewis structure is drawn for SiO32-, what is around the central atom?

Specify whether each of the following is polar, nonpolar, or ionic: a) C7H8 toluene [blank1] b) H2O water [blank2] c) C4H9OH butanol [blank3] d) C5H7O5 ribose sugar [blank4] e) BaCl2 [blank5]