Consider the following thermodynamic data at 25C and the normal boiling point of N2O4 is 21.69C.

Calculate S for the vaporization of 2 mol of N2O4. Assume H does not change
with temperature. (7 marks)

Species Hf (kJmol-1)
N2O4(l) -19.50
N2O4(g) 9.16

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.