(a) A steel tank has a volume of 200 L and is filled with 885 g of O2

(a) A steel tank has a volume of 200 L and is filled with 885 g of O2. Calculate the pressure of Oz gas in atm at 25°C. R = 0.0821 L atm k mol (1 mark) (b) Does N2 gas behave more ideally at 1 atm or at 500 atm? Explain. (1 mark) (c) Both solid argon and diamonds consist of individual atoms. Why do their physical properties differ so much? (1 mark) (a) For the reaction: N204(9) = 2NO2(g) Ke = 0.21 at 100 °C. At a point during the reaction, [N204] = 0.12 M and [NO2) = 0.055 M. Is the reaction at equilibrium at that time? If not, which direction is it progressing? (b) A common laboratory method for preparing a precipitate is to mix solutions containing the component ions. i) Write the equilibrium solubility product constant for CaF2, which is a sparingly soluble ionic compound. (1 mark) ii) Does a precipitate form when 1.00 L of 0.010 M Ca(NO3)2 is mixed with 2.00 L of 0.010 M NaF? Ca(NO3)2 and NaF are both soluble in aqueous solution. For CaF2, Ksp = 3.2x10-11 Show your work. (2 marks) a) Draw molecular orbital diagrams and name all of the orbitals for H2and H2 and H2. b) What is the bond order for each? Show your work. c) What are the relative stabilities of Hz*, H2 and Hz? Justify your answer. d) When a hydrogen atom accepts an electron, it becomes a hydride H. Would it be possible to form a molecule from two hydrides: H22 ? Justify your answer.