How many valence electrons does boron need to be stable?

3 Pieces of Key Information elements, compounds, mixtures also state a real world example of elements, compounds, mixtures and lastly why is elements, compounds, mixtures are important

Explain how algae is indirectly essential to consumers in ecosystems, polar bears.

HI decomposes to H2 and I2 by the following equation: 2HI (g) → H2 (g) + I2 (g); Kc = 1.6 * 10-3 at 25∘C If 1.

Which is a compound? Sodium sea water carbon dioxide brass

At equilibrium the concentration of lack is about ten times higher than the concentration of l2

Which is NOT a property of gold? A. rare B. tarnishes C. malleable D. corrosion resistant

The element rubidium has two naturally occurring isotopes. The atomic mass of 85Rb (72.17 percent abundant) is 84.911794 amu. Determine the atomic mass of 87Rb (27.83 percent abundant). The average atomic mass of Rb is 85.4678 amu.

Describe what you can do to slow down, or stop the continuous negative human treatment of our aquatic biomes.

If the hydrogen ion concentration is 10-7M, what is the pH of the solution? Show all work.

When it is raining water is returning to earth as a water cycle stage called