Does anyone know how to do number 15?

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Gymnast always perform on padded mats. how does the mats protect the gymnast

Which sentence from holes contains an implied personality trait? stanley and his parents had tried to pretend that he was just going away to camp for a while, just like rich kids do. he'd just been in the wrong place at the wrong time. stanley felt somewhat dazed as the guard unlocked his handcuffs and led him off the bus. stanley nodded to show he understood