How many atoms are in a 12.0 gram sample of lithium

Define dew point. i am writing this part to be able to ask the question

Me i dont know what to do! 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.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate