Respuesta :
there is a shortcut to this Chem question. simply look at this problem as if it were a cooking recipe. you have 7 parts Carbon and 18 Parts Hydrogen for a total of 25 parts. Simply divide 5.2 by 25 then multiply by 7 to get your answer.
(5.2/ 25) 7 = 1.456 moles
(5.2/ 25) 7 = 1.456 moles
Answer : The number of moles of carbon are, 36.4 moles.
Explanation : Given,
Moles of [tex]C_7H_{18}[/tex] = 5.2 mole
First we have to determine number of carbon and hydrogen atoms present in [tex]C_7H_{18}[/tex].
As we know that, in [tex]C_7H_{18}[/tex] there are 7 atoms of carbon and 18 atoms of hydrogen.
Now we have to determine the moles of carbon.
As, 1 mole of [tex]C_7H_{18}[/tex] contains 7 moles of carbon.
So, 5.2 moles of [tex]C_7H_{18}[/tex] contains [tex]5.2\times 7=36.4[/tex] moles of carbon.
Hence, the number of moles of carbon are, 36.4 moles.
