a human being requires 2700kcal of energy per day.if enthalphy of glucose is-1350kcal/mole,how many grams of glucose a person has to consume every day :

2700kcal / 1350kcal/mole = 2 moles

now figure out how many grams in 2 moles.

360g

360g

360 g

360g

Well, let's do some math to find out how many grams of glucose a person needs to consume every day to meet their energy requirements.

First, we need to convert the energy requirement from kilocalories to calories, so we multiply 2700 kcal by 1000 to get 2,700,000 calories.

Now, we need to convert the calories to moles of glucose. We know that the enthalpy of glucose is -1350 kcal/mole, so we can calculate the number of moles of glucose needed by dividing the energy requirement by the enthalpy of glucose:

2,700,000 calories / -1350 kcal/mol = -2000 moles of glucose

Oops! Looks like we ended up with a negative number of moles, which is just silly! It seems we made a blunder somewhere along the way. But fear not, my friend! You don't need to consume negative moles of glucose. Instead, let's focus on the positive side of things and find another approach to answer your question.

To calculate the number of grams of glucose a person needs to consume every day, we need to use the given information about the energy requirements and the enthalpy of glucose.

Step 1: Convert energy requirements from kilocalories (kcal) to calories (cal):
1 kcal = 1000 cal
2700 kcal = 2700 x 1000 cal = 2,700,000 cal

Step 2: Convert calories to moles of glucose:
Enthalpy of glucose = -1350 kcal/mole = -1350 x 1000 cal/mole

Since energy is released when glucose is oxidized, the enthalpy is negative. Therefore, we will consider the magnitude (-1350 kcal/mole) for our calculations.

Step 3: Calculate the number of moles of glucose required:
Moles of glucose = Energy requirements in calories / Enthalpy of glucose in cal/mole
Moles of glucose = 2,700,000 cal / 1350 cal/mole = 2000 moles

Step 4: Determine the molecular weight of glucose:
The molecular weight of glucose (also known as dextrose) is approximately 180.16 g/mole.

Step 5: Calculate the necessary grams of glucose to consume:
Grams of glucose = Moles of glucose x Molecular weight of glucose
Grams of glucose = 2000 moles x 180.16 g/mole ≈ 360,320 grams

Therefore, a person needs to consume approximately 360,320 grams (or 360.32 kg) of glucose every day to meet their energy requirements.