2. You water three sunflower plants with acidic water. Each plant receives a different concentration of acid solutions. A fourth plant receives regular water. After a two-week period, the height is measured. What is the independent variable,dependent variable, constant and hypothesis?

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

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.