The planet Gallifrey has two naturally occurring isotopes of chlorine. Chlorine-35 has an isotopic abundance of 45.89% and a mass of 34.9689 amu. Chlorine-37 has an isotopic abundance of 54.11% and a mass of 36.9659 amu.
Calculate the average atomic mass of chlorine on planet Gallifrey.

If a reaction has g of -136kj at 110°c, will it be spontaneous at this temperature (110°c)? yes or no

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.

What 3 categories are elements divided