Iodine-131 has a half life of about 8 days. If you had 60 grams of I-131, how much would remain after 24 days?

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Acontrol during an experiment. might change remains constant does not exist does change