Please help 10 points each will crown right answer

Where does writer's block come from? briefly describe each of the four possible reasons that writer's block occurs. asap!

You need to start an experiment and the instructions are to mix 2 g of sodium bicarbonate with 50 ml of distilled water and then mix the solution. describe what lab apparatus you would use and what safety precautions you must observe when completing this experiment.

This excerpt is repeated several times. what effect does this repetition have on the epic