Determine the density of NH_3 gas at 435 K and 1.00 atm. How many liters of etha

Question

Determine the density of NH_3 gas at 435 K and 1.00 atm. How many liters of ethane measured at 17degreeC and 714 Torr must be burned to give off 2.75 times 10^4 kJ heat? 2C_2H_6(g)+7O_2(g) rightarrow 4CO_2(g)+6H_2O(I) deltaH=-3.13 times 10^3kJ CH_4(g)+2O_2(g) rightarrow CO_2(g)+2H_2O(I) deltaH=-890kJ If 0.300 mol of CH_4 bums and all the heat given off is absorbed by 6.00 kg of water, initially at 20.0 degreeC, what is the final temperature of the water? The specific heat of water is 4.18 J/(gdegreeC)

Explanation / Answer

PV = nRT

n = m/MW

D = m/V

PV = m/MW*RT

D = P*MW/(T)

D = 1*17/(.082*435) = 0.47659 g/L

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