If a person weighs 63.4 KG they will weigh 139.773 but if you estimate it which in most cases you do it would be 139.8 :)
Combustion=heat and light
decomposition=taking something away
single means one element changes
and double means two elements change l.
This equation is impossible. NaSO4 is non-existent. Did you mean Na2SO4?
Answer:
xenon
Explanation:
Xenon is a non-metal, odorless gas, consist of single atoms, colorless, and 8 valence electrons out of everything else on this list.
