Which of the following contains th most number of atoms? СаCO3 Calcum Cartonate Fe2O3 Rust NaHCO3 Mgo Baking Soda MgO Magnesium Oxide A. Calcium Carbonate B. Rust C. Baking Soda D. Magnesium Oxide​

It changes food into energy that the organism can use.

If you open the bottle of perfume then nothing but the smell will come out of it and yes it is a type of gas smell because it’s say it in english so i can understand better and you

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom