What is the concentration of a solution, in parts per million, if 0.02 gram of na3po4 is dissolved in 1000 grams of water?
(1) 20 ppm (3) 0.2 ppm
(2) 2 ppm (4) 0.02 ppm

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

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.

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes