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H3PO4 + Mg(OH)2 → Mg3(PO4)2 + H2O
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3. Chemical Reactions
Balancing Chemical Equations
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When the following equation is balanced, what is the coefficient in front of H2O?___ Ba(OH)2 + ___ H3PO4 → ___ H2O + ___ Ba3(PO4)2
A
1
B
2
C
3
D
4
E
5
F
6
G
none of the above
Verified step by step guidance1
Identify the chemical equation to be balanced: Ba(OH)2 + H3PO4 → H2O + Ba3(PO4)2.
List the number of atoms of each element on both sides of the equation. Initially, you have: Ba: 1, O: 2, H: 5, P: 1 on the reactant side and Ba: 3, O: 8, H: 2, P: 2 on the product side.
Balance the barium (Ba) atoms by placing a coefficient of 3 in front of Ba(OH)2, resulting in 3 Ba atoms on both sides.
Balance the phosphorus (P) atoms by placing a coefficient of 2 in front of H3PO4, resulting in 2 P atoms on both sides.
Balance the hydrogen (H) and oxygen (O) atoms by placing a coefficient of 6 in front of H2O, ensuring that the number of H and O atoms are equal on both sides of the equation.
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