How many molecules are in 114.86 g of vitamin C, C₆H₈O₆?

Question

Quizplus · Accepted Answer

To solve this problem, we need to use the concept of Avogadro's number.

1 mole of any substance contains 6.02 x 10^23 molecules of that substance.

First, we need to calculate the number of moles of vitamin C in 114.86 g.

Molar mass of vitamin C = (1 x 12.01) + (2 x 1.01) + (16.00) + (12.01) + (1.01 x 18) = 176.13 g/mol

Number of moles = (mass of substance in grams) / (molar mass) = 114.86 g / 176.13 g/mol = 0.6517 moles

Now, we need to multiply the number of moles by Avogadro's number to find the number of molecules.

Number of molecules = (number of moles) x (Avogadro's number) = 0.6517 mol x 6.02 x 10^23/mol = 3.927 x 10^23

Therefore, the answer is B.

How Many Molecules Are in 114