Hell me with this ASAP please

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

What is the percentage composition of carbon in the compound ch4

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