If you add 50.0 mL of a 0.100 M HCl(aq) solution to 100.0 mL of a 0.200 M HCl(aq) solution, what will be the molarity of the resulting solution

You flick the switch.

Actual

When a light bulb connects to an electrical power supply, an electrical current flows from one metal contact to the other. As the current travels through the wires and the filament, the filament heats up to the point where it begins to emit photons, which are small packets of visible light.