Reference no: EM132753745

1. What does a low enthalpy of fusion for a solid tell you about the solid (its bonding or type)?

2. What does a high melting point and a high enthalpy of fusion tells you about a solid (its bonding or type)?

3. Which would u expext to have the higher enthalpy of fusion, N2 or I2? Explain ur choice.

4. Benze is an organic liquid that freezes at 5.5C and forms beautiful, feather-like crystals. How much heat transfer occurs when 15.5 g benzene freezes at 5.5C? The enthalpy of fusion of benzene is 127 J/g. If the 15.5-g sample is remelted, again at 5.5C, what quantity of heat transfer is required to convert it to a liquid?

5. Which of these substance has the highest melting point? The lowest melting point? Explain your choices briefly.

a. LiBr

b. CaO

c. CO

d. CH3OH

6. Which of these substance has the highest melting point? The lowest melting point? Explain your choices briefly.

a. SiC

b. I2

c. Rb

d. CH3CH2CH2CH3

7. Why is solid CO2 called Dry Ice?