What is Hess's law?
The enthalpy change in a reaction is independent of the route taken.
Related Chemistry A Level answers
All answers ▸electron arrangement in atoms
Describe the trend in the reactivity of group 2 elements with chlorine as you descend down the group.
A naturally occurring sample of the element boron has a relative atomic mass of 10.8 In this sample, boron exists as two isotopes. Calculate the percentage abundance of 10B in this naturally occurring sample of boron.
How does the first ionization enthalpy change down group 2?