The reaction between chlorine and hydrogen occurs in the presence of sunlight at room temperature while that between fluorine and hydrogen occurs in the dark and at low temperatures. Explain why.

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?