Multiple Choice
When the following chemical equation is balanced, what are the correct coefficients for Sb, O_2, and Sb_4O_6?__ Sb + __ O_2 → __ Sb_4O_6
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3. Chemical Reactions
Balancing Chemical Equations
Multiple Choice
Which of the following chemical equations is NOT correctly balanced?
A
2 H_2 + O_2 \(\rightarrow\) 2 H_2O
B
C_3H_8 + 5 O_2 \(\rightarrow\) 3 CO_2 + 4 H_2O
C
Fe + O_2 \(\rightarrow\) Fe_2O_3
D
N_2 + 3 H_2 \(\rightarrow\) 2 NH_3
Verified step by step guidance1
Identify each chemical equation and write down the number of atoms of each element on both the reactant and product sides.
For the equation \(2\ H_2 + O_2 \rightarrow 2\ H_2O\), count hydrogen and oxygen atoms on both sides to verify balance.
For the equation \(C_3H_8 + 5\ O_2 \rightarrow 3\ CO_2 + 4\ H_2O\), count carbon, hydrogen, and oxygen atoms on both sides to check if they are equal.
For the equation \(Fe + O_2 \rightarrow Fe_2O_3\), count iron and oxygen atoms on both sides and check if the number of atoms matches; if not, adjust coefficients to balance.
For the equation \(N_2 + 3\ H_2 \rightarrow 2\ NH_3\), count nitrogen and hydrogen atoms on both sides to confirm the equation is balanced.
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