What is the percent of phosphorus by mass in phosphoric acid, H3PO4?
Use 1.008 g/mol for the molar mass of hydrogen, 16.00 g/mol
for the molar mass of oxygen, and 30.97 g/mol for the molar
mass of phosphorus.

Name the element in group 17, period 2. (periodic table)

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers