Question

número de átomos existentes em 7,35 g de dióxido de carbono.

Answer 1

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$\boxed{\begin{array}{l}\underline{\rm observe~com~atenc_{\!\!,}\tilde ao~as~informac_{\!\!,}\tilde oes~que~podemos}\\\underline{\rm extrair~do~composto~CO_2:}\\\boxed{\begin{array}{c}\sf 1~mol~de~mol\acute eculas\\\sf 6\cdot 10^{23}mol\acute eculas\\\sf 3~mols~de~\acute atomos\\\sf 3\cdot6\cdot10^{23}\acute atomos\\\sf44~g/mol\end{array}}\\\sf qual~delas~nos~ajuda~na~pergunta?\\\underline{\bf a~resposta~\acute e~a~4^{\underline a}~e~5^{\underline a}~informac_{\!\!,}\tilde oes.}\end{array}}$

$\Large\boxed{\begin{array}{l}\sf 3\cdot6\cdot10^{23}\acute atomos\longrightarrow 44~g\\\sf x\longrightarrow 7,35\\\sf 44x=7,35\cdot3\cdot6\cdot10^{23}\\\sf x=\dfrac{132,3\cdot10^{23}}{44}\\\sf x=3,01\cdot10^{23}~\acute atomos\end{array}}$