To practice converting between different units of energy.

Duncan is a college student studying for a chemistry exam this evening. He also plans to go swimming at the school gym and have a dinner of ramen noodles. While the water for the ramen is heating, it absorbs energy as it gets hot. Later, while swimming, Duncan uses the potential energy in the food he has consumed.

The following conversion factors may be useful in this problem:

1 cal1 kJ==4.184 J1000 J

1) Duncan takes a break from studying and goes to the gym to swim laps. If swimming burns 7.95×105cal per hour, how many kilojoules does swimming burn in that same amount of time?

In other words, convert 7.95×105cal to kilojoules.

Express your answer numerically in kilojoules.

Im so lost please help!