7) Given that 4 NH3 + 5 02- 4 NO + 6 H20, if 3.00 mol NH3 were made to react with excess of oxygen gas, the amount of H20 formed would be:
A) 2.00 mol.
B) 3.00 mol.
C) 4.50 mol.
36.00 mol.
E) none of the above

Agas occupies 475 cm^3 at 313k. find its volume at 367k. you must show all of your work to receive credit. be sure to identify which of the gas laws you will be using

How do dying stars contribute to the formation of planets

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.