How much HCI exists in 486 ml of 0.37 M
solution of HCI?

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

Ibelieve y y even though i've only taken chemistry for one year

The answer is probably c. xylem