L
mol/dm³ is measure for molarity
Answer:
Atomic models are important because, they help us visualize the interior of atoms and molecules, and thereby predicting properties of matter.
Explanation:
We study the various atomic models in our course of study because, it is important for us to know, how did people come to the present concept of an atom. How did physics evolve from classical to quantum physics.
All these are important for us to know and thus, knowledge about various atomic models, their discoveries and drawbacks and finally improvements based on scientific evidence present at that time is important for us to understand the underlying theory very well.
Answer: -19 kJ
Explanation:
The change in enthalpy is mathematically expressed as the difference between the the total potential energy of products and the potential energy of the reactants :
Where:
Then:
The negative sign in this result means we have a negative enthalpy, hence an exothermic reaction (where heat is released).
Answer:
890
Explanation:
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