How many pairs of electrons do the two oxygen atoms in an oxygen molecule share with each

other? Explain your answer.

the valence of aluminum + 3 and the valence of chlorine is - 1 the formula for aluminum chloride is correctly written as

The density of ethanol is 0.789 g/cm3 at 20°C. What volume of ethanol has a mass of 15.5 grams?

Why was undersea exploration important for developing the theory of plate tectonics

What is the format for scientific notation

Write the chemical equation for the reaction of ammonia with hydrogen chloride

Allows water to pass through easily

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

How is the amount of sunlight affect the makeup of an ecosystem