help me with ap chem xD

[zeratul90]

Ok, does anyone know how to calculate the energy absorbed to produce water vapor? I was given the molar head of vaporization for water which is 40.79 kj/mol, but i'm not sure wtf i'm supposed to do with it.

Also, i need to calculate the total heat gained by water in the calorimeter which would be the heat gained of H2O(liquid) + heat gained of H20(gas). Calculating them would simply be using the q=mc*delta t but, how do i calculate the temperature of the water vapor?

Thanks! :)

[Court_Jester]

The problem is incomplete. Can you provide the complete statement of the problem? Are you supposed to vaporize all of the water?

[Bud]

Ok, does anyone know how to calculate the energy absorbed to produce water vapor? I was given the molar head of vaporization for water which is 40.79 kj/mol, but i'm not sure wtf i'm supposed to do with it.

Also, i need to calculate the total heat gained by water in the calorimeter which would be the heat gained of H2O(liquid) + heat gained of H20(gas). Calculating them would simply be using the q=mc*delta t but, how do i calculate the temperature of the water vapor?

Thanks! :)

Something's missing... transcribe the entire problem.

Do you mean the energy required to vaporize a certain volume of water?

[edberg505]

Yeah, I'm with everyone else here. I think something is lost in translation. Need to see the entire problem in full.

[zeratul90]

nvm guys, i asked my friends today at school how it was supposed to be done (rather i just copied), apparently they were too "busy" last night to respond to me when i sent a message every hour from 5pm-12pm -_- Thanks though!