A patient's oxygen tank holds 21.9 L of oxygen (O2) at a pressure of 24.3 atm. What is the final volume, in liters, of this gas when it is released at a pressure of 2.50 atm with no change in temperature and amount of gas?

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

there is none because earth is stationary and flat.

c. orbital shape i hope this is correct