To calculate the psi of neon in a closed system when heated, the ideal gas law can be applied using the formula P1/T1 = P2/T2, where temperatures must be in absolute terms. The user expressed concerns about the safety of their project involving thermal expansion to lift a heavy weight, emphasizing the need for precise calculations to avoid accidents. They mentioned difficulties with reading and understanding the equations due to dyslexia, which complicates their ability to perform calculations accurately. The discussion was temporarily closed for a safety review, highlighting the risks associated with the project. Seeking guidance from a local mentor is recommended for safe execution of such experiments.