That is only the combustion of a hydrocarbon. Rust is a combustion reaction because oxygen is added.
Fe(s) + O2(g) => FeO2(s)
Potassium (K) only has one valence electron. infact, all of the elements in the first column of the periodic table have only one valence electron.
Answer
No you did not lose weight.
Explanation:
Weight is the force acting on an object, Gravity is a force on earth which does not apply to the moon so your weight may change depending in where you are but your mass will stay the same because mass measures the matter of an object ITSELF! Have a nice day....
The answer, I think, would be "C". This is because 4P represents that there are 4 separate atoms of phosphorous; opposingly, P4 indicates that there are 4 atoms in a single molecule of phosphorous (that have chemically bonded together). Hope this helps!
