A metal tank contains three gases: oxygen, helium and nitrogen. If the partial pressures of the three gases in the tank are 15 atm of O2, 3 atm of N2 and 9 atm of He, what is the total pressure inside of the tank?

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

Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above