How many moles are present in 250 g of glucose (C₆H₁₂O₆)?

Question

Quizplus · Accepted Answer

To find the number of moles present in a substance, we need to divide the given mass of the substance by its molar mass. The molar mass of glucose (C6H12O6) can be calculated by adding the atomic masses of its constituent atoms:

Molar mass of glucose = (6 x 12.01 g/mol for carbon) + (12 x 1.01 g/mol for hydrogen) + (6 x 16.00 g/mol for oxygen) 
= 180.18 g/mol

Now we can use this molar mass to find the number of moles:

Number of moles = mass of glucose / molar mass of glucose 
= 250 g / 180.18 g/mol 
= 1.388 moles

Therefore, the best choice is B, which gives the answer rounded to one decimal place.

How Many Moles Are Present in 250 G of Glucose