How many particles would be in 8.4 moles of Octane (C8H18)?

There are 0.307 moles of molecules in 35 g of octane.

Explanation: You start by finding the molar mass of octane,(C8H18)This is 114 grams, because there are eight moles of carbon atoms and eighteen moles of hydrogen atoms in each mole of octane molecules.So, we total up 8 x 12 (for the carbon) and 18 x 1 (for the hydrogen).35g÷114 9g. That's it! This answer is the number of moles of octane molecules contained in the 35 grams of the compound.

mol

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

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