Zinc + hydrogen arsenate—> What type of reaction is this? (Synthesis, Decomposition, or Single Replacement?

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !

Why is it that 85.48 rounded to two significant figures is 85 and not 86?