Question

Qual a fórmula centesimal do gás metano ch4?.

Answer 1

$\boxed{\begin{array}{l}\rm m_{CH_4}=12+4\cdot1=16~g/mol\\\rm \%\,de\,C:\dfrac{12}{16}\cdot100\%=75\%\\\rm \%~de~H:\\\rm\dfrac{4}{16}\cdot100\%=25\%\\\\\rm C_{75\%}H_{25\%}\end{array}}$