Select the examples that provide evidence of chemical change.
a. the solid begins to melt as heat is applied to it.
b. two odorless liquids combine to form a unique odor.
c. the salt crystals dissolve in water as the mixture is stirred.
d. the beaker feels hot to the touch after adding the powder to the blue liquid.

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.

What is the chemical formula for dihydrogen monoxide