Question

Can someone give the correct EXPLANATION and answer


Will mark as branliest

Answer 1

★$\color{darkblue}\underline{\underline{\sf Given-}}$

• Mass of Hydrocarbon = 0.3g
• Mass of water = 0.18g

★$\color{darkblue}\underline{\underline{\sf To \: Find -}}$

• Percentage of hydrogen in it.

★$\color{darkblue}\underline{\underline{\sf Solution-}}$

$\color{violet}\bullet\underline{\boxed{\sf \% \: of \: Hydrogen =\dfrac{2}{18}×\dfrac{Mass \: of \: Hydrogen}{Mass \: of \: Hydrocarbon}×100 }}$

$\implies{\sf \dfrac{2}{18}×\dfrac{0.18}{0.3}×100}$

$\color{red}\implies{\sf \% \: of \: Hydrogen = 6.67\%}$

★$\color{darkblue}\underline{\underline{\sf Answer-}}$

Option (2) 6.67%

Percentage of hydrogen is $\color{red}{\sf 6.66\%}$