Hydrocarbon reacts with oxygen to form carbon dioxide and water if it is complete combustion. But during incomplete combustion carbon mono oxide and water are formed.
Diagram C shows a balanced chemical equation because it has equal number of atoms on both sides of the equation.
Answer:
The percentage is k
%
Explanation:
From the question we are told that
The mass of the stibnite is 
The volume of KBrO3(aq) is 
The concentration of KBrO3(aq) is 
Now the balanced ionic equation for this reaction is

The number of moles of
is

substituting values


from the reaction we see that 1 mole of
reacts with 3 moles of 
so 0.003325 moles will react with x moles of 
Therefore


Now the molar mass of
is a constant with a values of 
Generally the mass of
is mathematically represented as

substituting values

The percentage of Sb(antimony) in the overall mass of the stibnite is mathematically evaluated as
k 
k
%
CARBON is the element that must be present in an organic compound.

where
the Avogadro's constant that relates the number of particles to their number, in the unit moles
.
The molar mass of propanol- mass per mole propanol- can be directly deduced from its molecular formula with reference to a modern periodic table.

of propanol molecules would thus have a mass of 