Find the molar mass of 30si if the average molar mass of si is 28.09 g/mol? ? silicon has three naturally occurring isotopes (28si, 29si, and 30si). the molar mass and natural abundance of 28si are 27.98 g/mol and 92.20%, respectively, while the molar mass and natural abundance of 29si are 28.98 g/mol and 4.67%, respectively. i'm really stuck on how to solve this, it's a practice final exam question for

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.

When balancing a chemical equation:

Can someone me with 6 to 10 plz this is for masteries test.