Question

qual a massa de gás carbônico (CO2) consumido durante a combustão de 3 mols deste gás?​

Answer 1

$\Large\boxed{\begin{array}{l}\sf m_{CO_2}=12+2\cdot16=12+32=44\,g/mol\\\sf 44\,g\longrightarrow 1\,mol\\\sf x\longrightarrow 3\,mols\\\sf x=3\cdot44\\\sf x=132\,g\end{array}}$