Question

Calculate number of molecules in 1.5 mole of co2

Answer 1

Answer:

no. of moles = given mass / molar mass

1.5g = m / 44

1.5 × 44 = m

66g = m

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Answer 2

Given: 1.5 moles of carbon dioxide.

To find: We have to find the number of molecules.

Solution:

The chemical formula of carbon dioxide is $CO_2$.

The atomic mass of C is 12 and the atomic mass of oxygen is 16.

Thus the molecular mass of carbon dioxide is 44grams.

We know that one mole of carbon dioxide contains $6.023×10^{23}$ number of molecules.

Thus 1.5 moles of carbon dioxide contains $6.023×10^{23}×1.5=9×10^{23}$ number of molecules.

Thus 1.5 moles of carbon dioxide contains $9×10^{23}$ number of molecules.