[wahoox626]

Hi,

I was wondering if anybody could answer this problem I am having...

Consider a 50.0L tank that is filled with a mixture of hydrogen gas and oxygen gas such that the mole fraction of the hydrogen gas is 0.300, the total gas pressure is 1.10 atm and the temperature is 298K. Suppose that the gas mixture is ignited so that the hydrogen gas and oxygen gas react according to the following equation.

2 H[2](g) + O[2](g) -> 2H[2]O(g)

Calculate the total gas pressure after the reaction is completed assuming a final temperature of 400 K. (Note that at this temperature the water is produced in the gaseous state).

Also..

This one just doesn't make any sense to me. Maybe someone can figure this one...

A 50.0 g sample of water at 10.0 degree celcius is mixed with a 20.0 g of water at 85.0 degree celcius. Calculate the final temperature of the mixture assuming no heat loss to the surrounding.


Thank You

[Borek]

1. PV = nRT

2. heat lost = heat gained