floor

Q:

1. My sister mopped the bathroom that my younger brother used, and the bathroom had pee drops on the floor as my younger brother doesn't exercise caution when it comes to pee drops. Then, not knowing this, I used the same mop and mop bucket with the same used water inside, to mop the whole living room. While the living room was wet, everyone walked all over it, and the wetness transferred everywhere in the house. By the time I learned a few days later that the mop had been used to mop the bathroom, all the wetness had been dried. What should be done in this case?

2. Also, my mother prayed on the living room floor (no prayer mat, just on the floor) many prayers. Does she have to repeat them?

Q: In few mosques there are arrangements to offer prayer with jamat on 1st and/or 2nd floor along with the ground floor. I heard from some elder person that if the distance from one row (of jamat) to the subsequent row is greater than 2 row's size than prayer of the person of the subsequent row will not be valid. Hence if the roof's height of the ground floor is higher than the 2 row's size then the prayer of the person (offering prayer) in jamat on 1st floor will not be valid. Is this case true?

Q: If a person is praying at home on a clean floor, should he still spread out a prayer mat to pray on, or would this be unnecessary since the floor is clean? What would be the best for him to do in this situation?

Q: I just wanted to enquire about the following: When I shower some of the water leaks outside the shower and accumulates on the floor tiles. Does this make the floor napaak and if so how do I make it paak after every time I shower?

Q: Is it necessary that a person reciting Qur'an with the mushaf should be on a higher level i.e. on a chair e.g. if someone is sitting on a chair, then the reciter of Qur'an with mushaf should also be on a chair or the one sitting on the chair near him should sit on the ground?

Q: I have messed impurities on the tiled floor a while ago and have not cleaned it correctly (just wiped it with a dry cloth). I'm very worried about the impurities now. What if somebody walked on it with a wet foot and spread it? Is their Salaah accepted? Will I be responsible for it? The house has a domestic helper that cleans the house. She uses a bucket of water and cloth to clean the floor by dipping the cloth in the water bucket every once in a while and wiping the floor around the house once. (The floor becomes very wet and is air dried). There are no visible traces of the impurities anymore. Since the domestic helper cleaned the house and floor, can I assume and conclude that the floor is clean? What should I do? Please please help me. I am extremely extremely stressed and worried. This issue is negatively affecting my life and affecting my performance in my exams