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

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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 [tex]\times[/tex] a = 5.72

a = [tex]\dfrac {5.72}{180.12}[/tex]

a = 0.03 moles

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

1 mol = [tex]6.022 \times 10^{23}[/tex]

0.03 mol = [tex]6.022 \times 10^{23} \times 0.03[/tex] = [tex]1.922 \times 10^{22}[/tex] molecules

Thus, the number of molecules in the 5.72 grams is [tex]1.922 \times 10^{22}[/tex] molecules.

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

https://brainly.com/question/2293005

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