Question

Duncan takes a break from studying and goes to the gym to swim laps. If swimming burns 6.55×105 calcal per hour, how many kilojoules does swimming burn in that same amount of time? In other words, convert 6.55×105 calcal to kilojoules

Answer 1

2.751x10^3KJ

Step-by-step explanation:

The following were obtained from the question given:

Duncan burns 6.55×10^5 calcal per hour.

1 calorie = 4.2J

6.55×10^5 calories = 6.55×10^5 x 4.2 = 2.751x10^6J

Now we divide by 1000 to expressed in KJ i.e

2.751x10^6/1000 = 2.751x10^3KJ