A student performed a recrystallization and after the solid dissolved, the solution was immediately placed in an ice bath. Within a few seconds, a large amount of solid formed and was collected by vacuum filtration. The percent recovery was high but the melting point of the dried solid showed that the solid was contaminated with impurities. Could you explain very specifically why it happened?

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

When balancing a chemical equation:

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?