Answer:
Correct answer is option c
Explanation:
Formula: Remaining quantity of compound[tex]$A=P(\frac{1}{2})^\frac{t}{T}$[/tex]
Here,
P = Initial quantity of the compound = 300 mg
t = time that is elapsed = 12 hours
T = half life of the compound = 3 hours
[tex]$\therefore \,Remaining \,quantity \,of \,aspirin=300(\frac{1}{2})^\frac{12}{3} $\\$=300\times\frac{1}{16} =18.75\approx18.8$[/tex]
Hence, 18.8 g aspirin remain after 12 hours.
