How many molecules of glucose (C₆H₁₂O₆ molecular mass = 180 daltons)would be present in 90 grams of glucose?

Question

Quizplus · Accepted Answer

First, we need to find the number of moles of glucose in 90 grams:

moles = mass/MW
moles = 90/180
moles = 0.5 mol

Next, we can use Avogadro's number (6.02 x 10²³) to find the number of molecules:

number of molecules = moles x Avogadro's number
number of molecules = 0.5 x 6.02 x 10²³
number of molecules = 3.01 x 10²³

Therefore, there are 3.01 x 10²³ molecules of glucose in 90 grams, which is equivalent to choice E.

How Many Molecules of Glucose (C₆H₁₂O₆ Molecular Mass = 180