Linh is analyzing a solution in a crime lab. He needs to determine what liquid was used to dissolve the other substances. Which method would best complete the task? evaporation
filtration
decantation
distillation

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

27 drag each label to the correct location on the image. a particular exosolar system has five planets in total: a, b, c, d, and e. the table lists the orbital periods of these planets in days. planet orbital period (days) a 600 b 80 c 1,000 d 500 e 100 move each planet to its orbit in the system.

Select the correct lewis structure for fluorine which is group 7a element?