Verified Answer :

amyseal

Each molecule of Glucose has 6 Carbon atoms, 12 Hydrogen atoms and 6 Oxygen atoms
So, the molecular mass of glucose is 6(12) + 12(1.01) + 6(16) = 180.12
If 1 mole of glucose has a mass of 180.12, then let x  be the number of moles of glucose that weighs 5.72 grams

180.12(x) = 5.72

So, to get x, we divide 5.72 by 180.12
5.72/180.12 = 0.03 moles

1 mole of any substance has around 6.022 x 10^23 molecules of the atom/molecule/ion

So 0.03 moles has (6.022 x 10^23) x 0.03 = 1.922 x 10^22 molecules

Don't hesitate to ask if you have any questions
Hope I helped xx

Glucose is a carbohydrate having chemical formula C₆H₁₂O₆. The molecular mass of glucose is 180.12 grams.

Given that:

The molecular mass of 1 mol of Glucose = 180.12 grams

Given the mass of Glucose = 5.72 grams

Let the a be a number of moles present 5.72 grams, such that:

180.12 \(\times\) a = 5.72

a = \(\dfrac {5.72}{180.12}\)

a = 0.03 moles

Now, from avogadro's constant, we know that:

1 mol = \(6.022 \times 10^{23}\)

0.03 mol = \(6.022 \times 10^{23} \times 0.03\) = \(1.922 \times 10^{22}\) molecules

Thus, the number of molecules in the 5.72 grams is \(1.922 \times 10^{22}\) molecules.

To know more about moles, refer to the following link:

https://brainly.com/question/2293005

Related Questions