Which food has more Calories: 3 oz of salmon, which contains 17 g of protein and 5 g of fat, or 3 oz of chicken, which contains 20 g of protein and 3 g of fat? (Compare the Calories after taking significant figures into account.) Hint: One gram of protein or one gram of carbohydrate typically releases about 4 Cal/g, while fat releases 9 Cal/g.] 3 oz of chicken has more Calories. 3 oz of salmon has more Calories. Both have the same Calories.