Question

2) Qual a massa de H2O que reage com 64g de CH4. Reação balanceada.
CH 4 + 2 O → CO 2 + 2 H 2 O

Answer 1

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$\boxed{\begin{array}{l}\sf{Qual\,a\,massa\,de\,H_2O\,que\,reage\,com\,}\\\sf{64g\,de\,CH_4?}\end{array}}\\\boxed{\sf{CH_4+2O_2\Longrightarrow\,CO_2+~2H_2O}}$

$\sf{36\,g\,de\,H_2O\Longrightarrow\,16g\,de\,CH_4}\\\sf{x\Longrightarrow\,64g\,de\,CH_4}\\\sf{16\cdot x=64\cdot36}\\\sf{x=\dfrac{\diagdown\!\!\!\!\!64^4\cdot36}{\diagdown\!\!\!\!\!16}}\\\large\boxed{\boxed{\boxed{\boxed{\sf{x=144g\,de\,H_2O}}}}}$