How many valenceelectrons does rare earth metals have

The distance between stars is typically measured in

How are non metals used in everyday life?

Describe one way lack of water affect cell function

Describe the difference between a polar and a nonpolar covalent bond. give and explain an example of each type of bond.

Name 3 variables that afect a living systom

Describe three characteristics that trees used to build treehouses should have. why are these characteristics essential

Select the correct value for the indicated bond angle in each of the following compounds: O-S-O angle of SO2 F-B-F angle of BF3 Cl-S-Cl angle of SCI2 O-C-O angle of CO2 F-P-F angle of PF3 H-C-H angle of CH4

What is the shape of a molecule with a triple bond?

4FeS2 + 11O2 > 2Fe2O3 + 8SO2 Given 75.0 grams of iron (IV) sulfide, how many grams of sulfur dioxide are produced?

Cytotoxic t cells can attack target cells with which chemical weapons?