1).Write a balanced equation for the reaction of calcium pho

1).Write a balanced equation for the reaction of calcium phosphide,Ca3P2,with
water,H2O,forming calcium hydroxide,Ca(OH)2 and phosphine,PH3.Calculate the
heat of reaction from the standard heats of formation listed below.Then,
calculate the standard enthalpy change when 39.4 grams of calcium phosphide is
consumed in this reaction.standard heat of formation(Ca3P2) -504 kJ/mol
standard heat of formation(H2O) -285 kJ/mol standard heat of formation(Ca(OH)2)
-986 kJ/mol standard heat of formation(PH3) 5 kJ/mol
2).If 2.765×10-2 mol of NH3 gas has a volume of 715 mL at
42°C,what would be the volume of 2.765×10-2 mol of N2 gas
under identical temperature and pressure conditions?
3).A sample of
N2H6CO2 weighing 14.5 grams is heated to
80oC in a 1.0 L container.All of the salt sublimes into
NH3(g) and CO2(g) according to the following equilibrium
process.
N2H6CO2 (s) ↔ CO2 (g) + 2NH3 (g)
Determine the partial
pressure of the NH3(g) in the system in atmospheres.