PLEASE HELP ME release of heat flames or light

formation of precipitate

change in substances size

change in an objects shape

change in an objects phase of matter

releasing gases/bubbles

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

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.