How many valence electrons are these

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 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.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?