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How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

The fact that the total amount of energy in a system remains constant is a(n)