er antimony, Sb, the heat of fusion at its normal melting point of 631 °C is 19.6 kJ/mol. ne entropy change when 2.36 moles of solid Sb melts at 631 °C, 1 atm is 1 J/K.

A certain substance has an enthalpy of fusion of 6.12 kJ/mol and an entropy of fusion of 22.3 J/mol/K. Calculate the approximate melting point of the substance. Leave the answer in Kelvin.

Oxygen (O₂) is necessary for cellular respiration; it must be transported from the lungs to tissues through the bloodstream. However, O₂ is not very soluble in water. The Keq of oxygen dissolving at 300.0 K is 7.64 x 10⁻⁴ and the Keq at 320.0 K is 5.23 x 10⁻⁴. Calculate the ∆H(dissolve) for oxygen solubility in water, in kJ/mol.

For silicon, Si, the heat of fusion at its normal melting point of 1410 °C is 46.4 kJ/mol. The entropy change when 2.12 moles of liquid Si freezes at 1410 °C, 1 atm is J/K.

HI has a normal boiling point of –35.4°C, and its DHvapis 21.16 kJ/mol. Calculate the molar entropy of vaporization (DSvap).  Be sure to include the correct units with your answer.

determine the enthaply chnage of vaporization for silicon tetrachloride. using the image