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1.5 mole of W can be produced if 3.0 moles are reacted with excess when a mixture of the two elements W and B are reacted as the reactant and form a product.
A balanced chemical equation explains the law of conservation of mass because in a reaction mass can not be created nor destroyed, it will only be converted to other forms. there should be an equal number of atoms of a certain element in the reactant and in the product which means that elements are not lost or added after the reaction. Balancing a chemical equation is always the first step in every calculation involving stoichiometry because it will be the basis for the stoichiometric ratios between the reacting species.
A mixture of two elements and their reaction product is represented as,
W + B ----> WB2
here , 2 mole of B is react with 1 mole of W to produce WB2.
so, 3 mole of B react with = 1/2 * 3 mole of w
= 1.5 mole of W
To learn more about balanced chemical reaction please visit:
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