Based on the activity series, which one of the reactions below will occur? mn (s) + nicl2 (aq) → mncl2 (aq) + ni (s) fe (s) + zncl2 (aq) → fecl2 (aq) + zn (s) pb (s) + nii2 (aq) → pbi2 (aq) + ni (s) snbr2 (aq) + cu (s) → cubr2 (aq)

How have the greenhouse gasses increased from the year 2000 to 2018

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.

According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.