2. \( 3 \mathrm{CuO}+2 \mathrm{NH}_{3} \rightarrow 3 \mathrm{Cu}+3 \mathrm{H}_{2} \mathrm{O}+\mathrm{N}_{2} \)

Did you know that copper oxide has been utilized for centuries in various applications, from traditional pottery glazes to modern electronics? In your reaction, the copper oxide acts as a catalyst in the reduction of ammonia, a process critical in industrial applications like fertilizer production. This showcases how ancient materials can still play a vital role in modern science! In practical terms, this reaction highlights the importance of balancing chemical equations. A common mistake is to overlook the coefficients when determining the mole ratios, which can lead to incorrect stoichiometric calculations. Always double-check your work to ensure that the number of atoms for each element is balanced on both sides of the equation!