The initial temperature of the water in a constant-pressure calorimeter is 14°C. A reaction takes place in the calorimeter, and the temperature rises
to 87°C. The calorimeter contains 254 g of water, which has a specific heat
of 4.18 J/(g.°C). Calculate the enthalpy change during this reaction.

Aforce of attraction/repulsion due to the spin of electrons what is this force?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present