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1. 2 x 10² kcal are in the serving report your answer to 2 significant figures.

   According to the question

   A serving of fish contains 50 g of protein and 4. 0 g of fat.

   i.e. content of protein = 50 g

   Content of fat = 4 g

   kcal are in the serving report your answer to 2 significant figures:

   As the serving of fish contains 50g of protein that is 4.0kcal/g

   Calories in 50 g protein = (Content of protein) × (caloric value in protein)

   50g × (4.0kcal/g) = 200kcal

   That means the kcal of the serving is 200kcal

   In 2 significant figures: 2 x 10² kcal

   Hence,

   2 x 10² kcal are in the serving report your answer to 2 significant figures.

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