Your parent brought home 2 household solutions – one to clean the floor and another, the countertop. The floor cleaner is a solid and the instructions specify that a solution of 4.0%W/V should be made before cleaning. The countertop cleaner comes in a 250 ml bottle and the instructions say to make 3.5%V/V before using it on your countertop. Your parent needs 540 ml of floor cleaner solution and 270 ml of the countertop cleaner solution. Write instructions to your parent on how to make each solution. Show your calculations. Add safety precautions.
Use a screwdriver in the [] hole and turn it
The shield is the outer part of the bearings (yes the colored part). Talking them off can be really tough. You can use a small flathead screwdriver to do so, but you run the risk of damaging the bearings. Unless you have really expensive bearings, I would just buy new ones, the risk is a little high.
