What mass of PI3 could be obtained from 257 g of I2 and excess phosphorus if the reaction
P4+? I2 →? PI3
gives a 62% yield?
Answer in units of g.

In the analysis of hair and fiber samples, which does a compound comparison microscope allow for that a conventional compound microscope does not? a. simultaneous observation b. polarization c. fluorescence d. higher magnification

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

Why is permeable soil best for plants that need a lot of drainage?