Binary covalent compounds are: check all that apply.

a. compounds that share electrons
.b metals and nonmetal ions
c. made from two nonmetals
d. compounds with very different electronegativities

What is the polyatamic ion of thiosulfate

Why is the bottom layer of a trophic pyrimid the

6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity