Using the table on the left, calculate the total kilocalories for carbohydrates (rounding off the kilocalories to the tens place).
Express the energy to two significant figures and include the appropriate units
Carbohydrates(g)- 49,47,76
To calculate the total kilocalories for carbohydrates, we need to multiply the grams of carbohydrates by the energy content of carbohydrates, which is 4 kilocalories per gram.
Carbohydrates(g) - 49, 47, 76
Kilocalories = (49g * 4kcal/g) + (47g * 4kcal/g) + (76g * 4kcal/g)
= (196kcal) + (188kcal) + (304kcal)
= 688kcal
So, the total kilocalories for carbohydrates is 688 kcal.
To calculate the total kilocalories for carbohydrates, we need to use the conversion factor of 4 kilocalories per gram of carbohydrates.
1. Multiply the grams of carbohydrates for each food item by the conversion factor:
- 49 g * 4 kcal/g = 196 kcal (rounded to the tens place)
- 47 g * 4 kcal/g = 188 kcal (rounded to the tens place)
- 76 g * 4 kcal/g = 304 kcal (rounded to the tens place)
2. Add the kilocalories for each food item together:
196 kcal + 188 kcal + 304 kcal = 688 kcal (rounded to the tens place)
Therefore, the total kilocalories for carbohydrates, rounded to the tens place, is 690 kcal.