Show calculation of the mass percent in a solution of 12.6 grams of nano3 in 450 grams of water

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

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.