Question

the number of moles of carbon dioxide which contain 8 gram of oxygen is​

Answer 1

✨✨$\mathcal{HEYA\ MATE\: !!}$ ✨✨   $Answer...\\ \\1 \:mole\: of\: CO2\: contains\: \\ \\ 2 * 16 = 32 \:g \:of \:oxygen \: \\ \\so,\\ \\32 \:g \:of \:oxygen\: is \:in\: =\: 1 mol\\ \\8 \:g \:of\:oxygen \:will \:be\: in\: = 1 * 8/32\\ \\= 1/4 mol\\ \\Or \\ \\0.25 mol$  hope helps !! ❤️❤️