The reaction of different metals to hydrochloric acid is recorded in the table below. Students are going to add 30g of hydrochloric acid (HCI) to 30g of magnesium (Mg) in a large test tube

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= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

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

= final temperature = ?

using the equation

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.