6. What is the chemical formula for carbon tetrachloride?*
four answer
7. What is the chemical formula for dihydrogen dioxide? Also commonly
called hydrogen peroxide.
Your answer
8. What is the chemical formula for selenium hexoxide? *
point

6. CCl_4

7. H_2O_2

8. SeO_6

Explanation:

They are all nonmetal chemical formulas, so they call for the nonmetal naming rules. (It's basically just memorizing the roots: mono, di, tri, tetra, penta, hexa, septa, octa, nona, deca).

These are the rules for molecular/covalent naming:

-First element starts with the element name

-Second element has -ide

-Use prefixes to show the nuber of atoms of each part

-Don't use "mono" on the first element.

-If there is a word with "ao"" or "oo", just turn it into "o"

Ex: CaO is not "calcium monooxide", it's just "calcium monoxide"

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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