$$ C_xH_y + \left(x + \fracy4\right) O_2 \rightarrow xCO_2 + \fracy2 H_2O $$
The mole is the SI unit for amount of substance. It is defined as the amount of substance that contains as many elementary entities (atoms, molecules, ions, etc.) as there are atoms in exactly 0.012 kg (12 g) of Carbon-12. op tandon physical chemistry
One equivalent of substance A reacts with exactly one equivalent of substance B. $$ \fracW_AE_A = \fracW_BE_B $$ $$ C_xH_y + \left(x + \fracy4\right) O_2 \rightarrow
OP Tandon is for theory first; it is for problem-solving volume . $$ \fracW_AE_A = \fracW_BE_B $$ OP Tandon is
The ratio of the masses of two elements that combine separately with a fixed mass of a third element is the same or a simple multiple of the ratio in which they combine with each other.
If two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other bear a simple whole-number ratio.
$$ % \text of Element = \left( \frac\textMass of Element in 1 mole of compound\textMolar Mass of Compound \right) \times 100 $$