6. (i) Which sample of gas contains the maximum number of molecules?   7. (ii) If the temperature and the pressure of gas A are kept constant, then what will happen to the volume of A when the number of molecules is doubled?   8. (iii) If this ratio of gas volumes refers to the reactants and products of a reaction, which gas law is being observed?   9. (iv) If the volume of A is actually 5.6 dm3 at S.T.P., calculate the number of molecules in the actual volume of D at S.T.P. (Avogadro's Number is 6 × 1023). (Leave no spaces in your answer.)   10. (v) Using your answer from (iv), state the mass of D if the gas is Dinitrogen oxide (N2O). (N = 14; O = 16) (Type in ONLY the numerical value of the mass, assuming that its unit is grams.)