Question

Honey is sometimes used as a substitute for sugar because it tastes better and because it has a lower glycemic index when compared to sugar. 2 teaspoons of honey would substitute for 1 tablespoon of sugar. A tablespoon of sugar weighs 12.5 grams. How many mols is this? The MW of glucose is 180 g/mol.

a 69.4 mols
b 69.4 mmols
c 14.4 mols
d 69.4 M

Answer 1

To find the number of moles of sugar in a tablespoon weighing 12.5 grams, with glucose having a molar mass of 180 g/mol, we divide the mass by the molar mass, resulting in 0.0694 moles, which is equal to 69.4 millimoles. The correct option is B.

Step-by-step explanation:

The question involves the conversion of grams of sugar to moles, which is a concept in chemistry. To find the number of moles, we use the formula:

Number of moles = mass (g) / molar mass (g/mol).

Given that a tablespoon of sugar weighs 12.5 grams, and the molar mass (MW) of glucose is 180 g/mol, we can calculate the moles of glucose:

Number of moles = 12.5 g / 180 g/mol = 0.0694 moles.

Therefore, the correct answer is b) 69.4 mmols because we need to convert moles to millimoles by multiplying by 1000 (1 mol = 1000 mmol).