a student heats a compound to constant mass and then leaves it sit out for a few hours. She comes back, remanded the sample and finds it has a greater mass than before. Explain how this could happen. ANY HELP IS MUCH APPRECIATED! :)

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