In a titration, the point at which one drop of base turns the acid indicator a pink color that lasts for 30 seconds is called the?

What semimetal can form four single covalent bonds.

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?