Answered

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Which of the following chemical equations depicts a balanced chemical reaction?
A. 2H₂ +202-> H₂O
B. 2H₂ +202-> 2H₂O
C. H₂ + O2-> H₂O
D. 2H₂ + O₂-> 2H₂O

Sagot :

CrystalQueen

Answer:

D.) 2 H₂ + O₂ -----> 2 H₂O

Explanation:

An equation is balanced when there is an equal amount of each element on both sides of the reaction. If these amounts are unequal, coefficients can be added to modify the amount of particular molecules.

A.) Not balanced

2 H₂ + 2 O₂ -----> H₂O

Reactants: 4 hydrogen, 4 oxygen

Products: 2 hydrogen, 1 oxygen

B.) Not balanced

2 H₂ + 2 O₂ -----> 2 H₂O

Reactants: 4 hydrogen, 4 oxygen

Products: 4 hydrogen, 2 oxygen

C.) Not balanced

H₂ + O₂ -----> H₂O

Reactants: 2 hydrogen, 2 oxygen

Products: 2 hydrogen, 1 oxygen

D.) Balanced

2 H₂ + O₂ -----> 2 H₂O

Reactants: 4 hydrogen, 2 oxygen

Products: 4 hydrogen, 2 oxygen

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