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How many Calories does one gram of fat yield?
1 gram fat produce 9 calories i.e. 37.7 kJ
How many calories of heat would it take to raise the temperature of 256 grams of water from 20 degrees to 99 degrees?
A calorie is the amount of heat you need to raise the temperature of one gram of water by one degree Celsius. Assuming you are raising the temperature of the water from twenty degrees Celsius to ninety-nine degrees Celsius, it would take 20,000 calories. To calculate this, subtract 20 from 99. This is the amount of degrees you need to raise the temperature of the water by. Then multiply that number by 256, the amount of water in grams. You should get 20,244 calories. In significant digits, your answer should be 20,000 calories.
How many calorie make one pound?
If you calculate your BMR this will tell you how many calories your body needs a day to maintain its weight. If you then consume 500 extra calories a day for a full week you should gain around a pound in weight. So I would say the answer is 3500 calories.
How many steps do you have to take to burn 3500 calories?
If one burns off roughly one calorie per 20 steps, then it should take about 70,000 steps to burn off 3500 calories or 1 pound of body fat.
How long would it take to count one billions objects weighed 0.00000001 gram?
To count one billion objects, it would take you however long it takes to count one object times one billion. It does not matter how much mass the object has, so your statement of mass is meaningless.
