I'm not entirely sure what you mean in the second sentence. Do you mean you can't pick it up because it's too heavy? I will take a stab at it.
I was at work last night. It was my turn to clean the floor. I asked my manager what kind of detergent I should add to the water.
The bucket of water is so heavy, how can I pour water from the bucket?
I didn't wash the dishes because I didn't know if we had dishwashing liquid in the kitchen.