If a man takes a diet which giveshim energy equal to 9500 kJ per day and he expends energy in all forms to a total of 12000 kJ per day, what is the change in internal energy per day ? If the energy lost was stored as sucrose ( 1632kJ per 100 g ) , how many days should it take to lose 1 kg ? Ignore the water loss.

Explanation

To solve the problem, we will break it down into two parts: calculating the change in internal energy and determining how many days it would take to lose 1 kg of weight.

### Step 1: Calculate the Change in Internal Energy
The change in internal energy (ΔU) can be calculated using the formula:

\[ \Delta U = U_{\text{final}} - U_{\text{initial}} \]
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