Then, rank the solids in order of decreasing melting point. That is, select "1" next to the solid with the highest melting point, "2" next to the solid with the next highest melting point, and so on. (You may need to use the scrollbar to see all the choices.) element or compound type of solid formed force holding the solid together melting point of solid N2 ? HCI ? ?

If we start with 10g of ice at -5°C and heat it until we have liquid water at 45°C, how much heat energy will be needed (kJ)?     The specific heat of ice is 2.03J/g°C and the specific heat of liquid water is 4.18J/g°C.     ΔHfusion is 334 J/g.

Is this correct?

None

Categorize the molecules and statements based on whether they are an example or property of an ionic solid, molecular solid, network (atomic) solid, or all three. Ionic composed of ions Incorrect CaCO3 good conductor of electricity when dissolved in solution poor conductor in solid form Molecular composed of molecules Sg typically low melting points Network (atomic) composed of atoms connected by covalent bonds Answer Bank graphite diamond nonconductor of electricity when dissolved in solution Describes all three crystalline solid

iClicker Question: Which solid has the lowest melting point and why? A. NaCl(s) B. C(s, diamond) C. C3H(s)

3. A substance has a heat of vaporization of 28.90 kJ/mol.  At -21 °C it has a vapor pressure of 137 mmHg.  What is the temperature in °C when the vapor pressure is 14 mmHg?  Round to the nearest whole number.