The half-life of the radioactive element unobtanium-53 is 10 seconds. If 32 grams of unobtanium-53 are initially present, how many grams are present after 10 seconds? 20 seconds? 30 seconds? 40 seconds? 50 seconds?The amount left after 10 seconds isThe amount left after 20 seconds isThe amount left after 30 seconds isThe amount left after 40 seconds isThe amount left after 50 seconds is