I have a bar of soap that weighs 135 grams. If I leave a sink dripping on the same spot on the bar of soap for 45 minutes how much of the soap will be eroded and how much will the soap weigh? The sink is dripping at 60 drips per minute.

It is impossible to answer this question without knowing the size of the droplets and the composition of the soap. The amount of erosion and the weight of the soap will depend on these factors.