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3 years ago

Please help me solve this USING DIMENSIONAL ANALYSIS! :

Chemistry

1 answer:

Amanda [17]3 years ago

5 0

Answer:

Explanation:

Given: 1 dietary Calorie = 1000 calories

1 calorie = 4.184 Joules

But,

1 dietary Calorie = 1 Kcalorie

= 1000 x 4.184 Joules

= 4184 Joules

= 4.184 KJoules

1 dietary Calories contains 4.184 KJ of energy.

A bottle of Coca cola contains 42 Kcalories; thus,

1 Kcalorie = 1000 calories

= 4.184 KJoules

Energy = 42 x 1 dietary Calories

= 42 x 4.184 KJoules

= 175.728 KJoules

Energy ≅ 176 KJ

So that;

In my bottle of coca cola, there are 176 KJ of energy.

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