Question

How water has more molecles than sugar
9g of water or 9g of sugar(C11H22O11)

Answer 1

molecules =mole xNA

more moles more molecules.

9/18 =0.5 moles H2O

9/342 =0.026 MOles

so sugar less moles compare to water so less molecules.

Answer 2

9 g of water has more molecules.

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

a) 9 g of water

$\text{Number of moles of water}=\frac{9g}{18g/mol}=0.5moles$

1 mole of water contains = $6.023\times 10^{23}$ molecules of water

0.5 mole of water contains = $\frac{6.023\times 10^{23}}{1}\times 0.5=3.011\times 10^{23}$ molecules of water

b) 9 g of sugar

$\text{Number of moles of sugar}=\frac{9g}{342g/mol}=0.026moles$

1 mole of sugar contains = $6.023\times 10^{23}$ molecules of sugar

0.026 moles of sugar contains = $\frac{6.023\times 10^{23}}{1}\times 0.026=0.156\times 10^{23}$ molecules of sugar

Learn More  about Avogadro's law

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