1. Explain why running hot water on the metal lid of a glass jar makes it easier to unscrew.

Explanation:

Let the hot water run from the tap until it's piping hot, and then turn the jar on its side and carefully dip the lid under water. ... The hot water helps the metal expand, therefore loosening the lid and making it easier to unscrew.

pecialized keyboards

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation