The total Calories for 2 tablespoons of crunchy peanut butter that contains 6 g of carbohydrate, 16 g of fat, and 7 g of protein. Express your answer using one significant figure.

How do I figure out the amount of kcal per carb fat and protein?
Thanks
-MC

192 in one s.f. is:

round to 200, then
2 x 10^2 or 2E2. I obtained 196 and not 192 BUT I may be using different numbers for kcal vs grams.
I used 4 kcal/g carb
4 kcal/g protein
9 kcal/g fat.

To calculate the amount of calories per carbohydrate, fat, and protein, you can use the following conversion factors:

- Carbohydrate: 1 gram of carbohydrate provides 4 calories.
- Fat: 1 gram of fat provides 9 calories.
- Protein: 1 gram of protein provides 4 calories.

Step 1: Calculate the calories from carbohydrates:
Number of calories from carbohydrates = (amount of carbohydrates in grams) x (conversion factor for carbohydrates)

From the information given, the amount of carbohydrates in 2 tablespoons of crunchy peanut butter is 6 grams. Plugging this in the formula:

Number of calories from carbohydrates = (6 g) x (4 calories/g) = 24 calories

Step 2: Calculate the calories from fats:
Number of calories from fats = (amount of fats in grams) x (conversion factor for fats)

From the information given, the amount of fats in 2 tablespoons of crunchy peanut butter is 16 grams. Plugging this in the formula:

Number of calories from fats = (16 g) x (9 calories/g) = 144 calories

Step 3: Calculate the calories from protein:
Number of calories from protein = (amount of protein in grams) x (conversion factor for protein)

From the information given, the amount of protein in 2 tablespoons of crunchy peanut butter is 7 grams. Plugging this in the formula:

Number of calories from protein = (7 g) x (4 calories/g) = 28 calories

Step 4: Calculate the total calories:
Total calories = (number of calories from carbohydrates) + (number of calories from fats) + (number of calories from protein)

Plugging in the calculated values:

Total calories = 24 calories + 144 calories + 28 calories = 196 calories

So, the total calories for 2 tablespoons of crunchy peanut butter is 196 calories (rounded to one significant figure).

To figure out the amount of kilocalories (kcal) per carbohydrate, fat, and protein, we need to know the kcal per gram for each macronutrient. The general values are as follows:

- Carbohydrate: 4 kcal per gram
- Fat: 9 kcal per gram
- Protein: 4 kcal per gram

To calculate the kcal per macronutrient, simply multiply the grams of each macronutrient by the corresponding kcal per gram value.

In this case, we have 6 grams of carbohydrates, 16 grams of fat, and 7 grams of protein.

For carbohydrates:
6 g x 4 kcal/g = 24 kcal

For fat:
16 g x 9 kcal/g = 144 kcal

For protein:
7 g x 4 kcal/g = 28 kcal

Now, to calculate the total kcal for 2 tablespoons of crunchy peanut butter, simply add up the kcal from each macronutrient:

24 kcal + 144 kcal + 28 kcal = 196 kcal

Therefore, the total kcal for 2 tablespoons of crunchy peanut butter is 196 kcal.

To express the answer using one significant figure, we round 196 kcal to the nearest ten, resulting in 200 kcal.

Nevermind, I think the answer is 192, but how do I express this in one sig fig?