6 liters of 0.1 molar sodium hydroxide solution reacted with 2 liters of 0.1 molar iron(III) chloride solution. What is the molar concentration of sodium ions in the remaining solution? 1. 0.075 ( Correct Answer )
2. 0.15
3. 0.3
4. 0.6

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness