Is there something I need to read?
Answer:
#1 and #2 are the correct answers.
Explanation: The equation isn’t balanced because the amount of hydrogen and nitrogen in the reactants doesn’t match the amount of hydrogen and nitrogen in the products. When the coefficients are all set to 1, there are two nitrogen atoms in the reactants but only one in the products. Similarly, there are two hydrogen atoms in the reactants, but three in the products.
Lamps light up by electricity. Although, i'm sure you knew that by now. When a light bulb connects to an electric power supply, an electric current flows between the two metal contacts. As electricity flows between the wires and filament, the filament heats up. The filaments begin to emit photons, which are essentially small packets of light.
Hope this helps!