Using the phase diagram for CO2, what phase is carbon dioxide in at -60°C and 15 atm pressure?
O A. Liquid
O B. At the melting point
O C. Gas
O D. Solid

The answer is c// solid

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