The best answer is A.
The alimentary canal also called the digestive tract is the pathway by which food enters the body and solid wastes are expelled. The alimentary canal includes the mouth, pharynx esophagus, stomach, small intestine, large intestine and anus.
Food is converted into essential nutrients that are absorbed into the body and eliminates unused waste material. It is essential to good health because if the digestive system shuts down, the body cannot be nourished or rid itself of waste.
This question is purely balancing the chemical equation where the number of atoms in reactants is equal to the number of atoms in products.
For the mentioned equation:
In the reactants, we have 2 atoms of Hg and 2 atoms of oxygen.
In the products, we should have 2 atoms of Hg and 2 atoms of oxygen.
Since the oxygen molecule is composed of 2 oxygen atoms, therefore the coefficient should be equal to 1 for the equation to be balanced.
The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.
The moles of reactant and product in a chemical reaction to the whole number ratio is given by the stoichiometric coefficient of the balanced chemical equation.
<h3>Computation for the moles of oxygen</h3>
The balanced chemical equation for the reaction is :
From the balanced chemical equation, the 2 moles of acetylene react with 5 moles of oxygen.
The moles of oxygen react with 1 mole of acetylene are:
The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.
Learn more about moles reacted, here:
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