Answer:
quantity remains, Nt = 12.613 grams
Step-by-step explanation:
N(t) = N0(1/2)^(t/t1/2)
quantity remaining = initial amount * (1/2)^(elapsed time/half life)
quantity remaining = 15 * (1/2)^(1500/6000)
quantity remaining = 15 * (1/2)^(1/4)
quantity remaining = 15*.84089641525
quantity remaining = 12.6134462287
