8. Benzene has a AHap-33.90 kJ/mol and a AS- 96.4 J/mol-K. What is the vaporization temperature of Benzene in Celsius? A. -273 B. 78.5 C. 352 D. 2570 E. 2840

[Review Topics] The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250.0 kJ/mol, respectively. Silver's normal melting point is 962 °C, and its normal boiling point is 2212 °C. a. What quantity of heat is required to melt 15.0 g of silver at 962 °C? kj b. What quantity of heat is liberated when 4.34 g of silver vapor condenses at 2212 °C? kj Submit Answer In progress Retry Entire Group 9 more group attempts remaining Show Hint [References] Previous Next Save and Exit

Calculate the amount of heat needed to melt 2.00 kg of iron at its melting point (1,809 K), given that ΔHfus = 13.80 kJ/mol. A.   27.6 kJ B.   25,000 kJ C.   27,600 kJ D.   27,600 J E.   494 kJ

4 You are given the phase diagram shown and asked to determine several properties of the substance. First, find the normal melting point and boiling point. Pressure in atm 1.00- 0.75- 0.50- 0.25- 0 -50 solid -25 liquid -B- gas 0 25 Temperature, °C D 50 E This data does not extend to high enough pres- sure to determine the normal melting and boiling points of this substance. The normal melting point is ~-10 degrees Cel- sius, and the normal boiling point -50 degrees Celsius. This substance has a triple point so the normal melting and boiling points are the same.