There are four samples on a laboratory table. Sample A is a hard crystalline solid, which does not break easily.
Sample B is a solid that readily dissolves in water.
Sample C is a liquid that evaporates at room temperature.
Sample D is a colored liquid that conducts electricity.

Based on this information, which sample is most likely to be a covalent compound?

A.
sample A
B.
sample B
C.
sample C
D.
sample D

What does the symbol (–hfus) indicate in a phase change?

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin