"how many liters of a 0.2 m naoh solution are needed in order to have 1.0 moles of naoh? "

It would be 5 liters 1/0.2

Adozen is 1221/12 = 1.751.75 x 12 = 21therefore, 1.75 is the answer.

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