Which of the following is used to calculate the distance to a star based on subtle shifts in the star's position relative to an observer on earth

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

Geothermal energy for industrial use is available almost anywhere. a. true b. false

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor