Rocks are sometimes used along coasts to prevent erosion. If a rock needs to weigh 2,361 kilograms in order not to be shifted by waves, how big (what volume in mº) does
it need to be? You are using a rock with a typical density of 834 kg/m3

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.