At a dosage of 2.8 mg per kg of body weight, how many mg of adrenaline should an 84 kg adult receive.

240 mg. At a dosage of 2.8 mg/kg, an 84 kg adult should receive 240 mg of adrenaline.

Mass of adrenaline = Body wt. x dosage =84 kg x (2.8 mg adrenaline/1 kg = 240 mg adrenaline (2 significant figures)

all eukaryotic cell have mitochondria : )

answer;

18.5 seconds

explanation;

velocity is distance covered per unit time; it is given by displacement divided by time.

thus; time = displacement/velocity

total time = total displacement/velocity

total distance = 5000 meters south

total time = 5000/4.5

                  = 1111.11 seconds

but; 1 minute = 60 sec

thus; 1111.11 /60

                = 18.51 seconds

thus; the time taken is 18.5 seconds