Question

When a chemical reaction occurs, atoms rearrange to form now compounds, but no new atoms are created nor are any destroyed This concept is called conservation of mass. Mass conservation can be seen in a balanced chemical equation where the numbers of each kind of atom are the same on both sides of the reaction arrow. The figure (Figure 1) shows the reaction of element A (lavender spheres) with element B (tan spheres). Write the balanced chemical equation for this reaction in terms of A and B. Express your answer as a chemical equation. When balancing chemical equations with polyatomic ions, it may help to balance the ion as a whole. For example, the ion PO_4^3 can be treated as a unit and balanced in both the reactants and the product, or you can break it down and balance each atom separately. Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction: Balance the equation, then enter the coefficients, in order, in the answer box. Enter four integers separated by commas.

Answer 1

Solution of problems shown in the following image

Past A In Reactant No. of Aatom 4 No. of Bg molecule = 6 (6x2 = 12 B) thus balanced chemical equation become. ЯР + Сов, а янв, In product = No. of A=4 and no. of B = 4x3 = 12 B No. of atom in seachant of product a &e same. Chemical equation o- HA + GB - HAB₂

Part B Balanced chemical equation is 2H₃PO4 +3mg (OH), Mg, (PO4)2 + 6H₂O In product mg ace 3 therefore write coefficient 13 before mg (OH) in reactante In product poy arc a therefore write coefficient 2 before H₂ poy in reactant and balance reaction No. of tt in reactant of product = 12 h No. of o in reactant a product = 60 No. of mg in reactant of product = 3 Ma No. of poy in reactant of product = 2 pou equal po. of atoms in reactant of product therefore our reaction is balancede