Question

deduce the number of molecules in 8.8 gram of carbon dioxide atomic mass of oxygen is 16 carbon 12

Answer 1

Hey friend, Harish here.
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Here is your answer
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Mass of CO₂ = 8.8 grams

Molecular mass of CO₂ = 12+2× 16
                                      = 44 u.

No of moles = Given mass/ Molecular mass
 
                    $= \frac{8.8}{44}$
 
                     = 0.2 Moles.

No of molecules = No of moles × Avogadro's number

                          = 0.2 ×6.023 × 10²³

                         = 1.2046 × 10²³ molecules.

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Hope my answer is helpful to u.

Answer 2

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Hey there ,

Answer is in the attachment .