Recent content by Yomna

  1. Y

    Is HCl purely covalent or does it have ionic properties in water?

    Hey Can someone explain to me how pure hcl is covalent, and what happens when it is dissolved in water? I know it conducts electricity. But I am a bit lost
  2. Y

    Solving Heat Transfer Puzzle: Cooling Steel from 452°C to 100°C

    Well...i understand it now Cos it asked for the minimum mass of water needed... So they added the energy taken to heat it to 100 degrees then the energy taken to evaporate that minimum amount of water... so that's why they did... Q= mc delta T + mLv So i think that was just my main...
  3. Y

    Solving Heat Transfer Puzzle: Cooling Steel from 452°C to 100°C

    Last one :D Hey..sorry ...but just one last question.. does latent heat have anything to do with this question then? Thanks Yomna
  4. Y

    Solving Heat Transfer Puzzle: Cooling Steel from 452°C to 100°C

    Well..i thought of that. I use thermal eguilibrum ryt? In the answers it is written: Q(total)=-55.3x10^6=mc delta T(of water) + mL (water) I just don't understand why they did that. When i tried this i just did: Q(total)=mc delta T (of water)...can u tell me why they added the heat taken...
  5. Y

    Solving Heat Transfer Puzzle: Cooling Steel from 452°C to 100°C

    Hey People...um this is a question i got for school...i know what was used to solve it but i can't understand how that method was used and why they did that... it says: A foundry operator finds that it takes 55.3MJ of heat to heat a 286 kg mass of an alloy steel from 22 degrees C to 452...
Back
Top