Wednesday
October 22, 2014

Homework Help: Chemistry

Posted by Jason on Thursday, March 29, 2012 at 3:23pm.

The normal melting point of H2O is 273.15 K, and deltaH fusion is 6010 J/mol. Calculate the change in the normal melting point at 175 and 625 bar assuming that the density of the liquid and solid phases remains constant at 997 and 917 kg/m^3 respectively. Explain the sign of your answer.

So I had no problem calculating:
when P= 175 bar, deltaT= -1.25 K
when P= 625 bar, deltaT= -4.48 K

Assuming my answers are correct, can someone explain the negative signs in the context of the question?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - Some properties of aluminum are summarized in the following list. ...
chemistry - Some properties of aluminum are summarized in the following list. ...
CHEMISTRY..please help..thanks - The molar heats of fusion and vaporization for ...
CHEMISTRY..please help..thanks - The molar heats of fusion and vaporization for ...
Chemistry - How much heat is required to vaporize 1.00 L of CCl4 at its normal ...
chemistry - Say you have two substances, A and B. A has a melting point of 300 ...
Chemistry - Ethanol (C2H5OH) has been produced since antiquity by the ...
chemistry - How much heat is required to vaporize 3.50L of at its normal boiling...
chemistry - How much heat is required to vaporize 3.50L of at its normal boiling...
Chemistry - 38.0kg mass of copper is melted to be cast into a graphite mold at a...

Search
Members