Using the table on the left, calculate the total kilocalories for proteins (rounding off the kilocalories to the tens place).
Express the energy to two significant figures and include the appropriate units
Proteins(g)- 47,4,10
To calculate the total kilocalories for proteins, we need to use the information provided in the table, which is the amount of proteins in grams.
First, we need to convert the given grams of proteins to kilocalories.
The conversion factor for proteins is that 1 gram of protein provides approximately 4 kilocalories of energy.
So, let's calculate the total kilocalories:
47 grams of proteins * 4 kilocalories/gram = 188 kilocalories
4 grams of proteins * 4 kilocalories/gram = 16 kilocalories
10 grams of proteins * 4 kilocalories/gram = 40 kilocalories
Adding all these values together, we get:
188 kilocalories + 16 kilocalories + 40 kilocalories = 244 kilocalories
Therefore, the total kilocalories for proteins is 244 kilocalories, rounded to the tens place.
To calculate the total kilocalories for proteins, you need to use the conversion factor for proteins, which is 4 kilocalories per gram. Here's how you can calculate it step-by-step:
1. Start with the given amount of proteins: 47 grams.
2. Multiply the grams of proteins by the conversion factor:
47 g * 4 kcal/g = 188 kcal.
3. Round the total kilocalories to the tens place: 190 kcal (since the tens place is the first decimal place after the decimal point).
4. Express the answer to two significant figures: 190 kcal.
Therefore, the total kilocalories for 47 grams of proteins is 190 kcal.