Answer:
Strength
Explanation:
Lattice energy is the energy needed to remove one mole of ionic substance to its gaseous ion.
The lattice energy is used to determine the strength of a substance.
- Lattice energy increases as the size of an ion decreases.
- It decreases as the ion size increases.
- This quantity is often determined using electrostatics method in the laboratory
- The lattice energy is used to break an ionic solid to form a gaseous compound.
Answer:
An alkyl halide can undergo SN2 reaction with an amine
Explanation:
The displacement of a bromine atom by an an amine (step 2---> 3) in the reaction sequence is an example of an SN2 reaction in which the amine is the nucleophile.
The nitrogen atom of the amine which bears a lone pair of electrons functions as the nucleophile and attacks the electrophilic carbon atom of the alkyl halide displacing the bromide and creating a new Carbon-Nitrogen bond. An ammonium intermediate is immediately formed and the reaction is completed by the abstraction of a hydrogen by a base (such as excess amine present in the system).
This reaction is slower with t-BuNH2 because of steric hindrance and steric crowding in the transition state. SN2 reactions are faster with methylamine where the alkyl carbon is easily accessible.
The detailed mechanism of this reaction has been attached to this answer.
Characteristics of reliable scientific explanations are present in the development of the atomic theory in the given passage.
<h3>What is atomic theory?</h3>
Atomic theory is the scientific theory that matter is composed of particles called atoms.
The discoveries of subatomic particles such as;
- electron by J.J. Thomson
- proton by Ernest Rutherford
- neutron by James Chadwick
- nucleus by Ernest Rutherford
all contributed in the development of the atomic theory.
From the information given in the passage J.J. Thomson experiment gave rise to atomic model while Rutherford, Geiger and Ernest Marsden, performed the experiment that discovered nucleus and proton.
Thus, characteristics of reliable scientific explanations are present in the development of the atomic theory in the given passage.
Learn more about atomic theory here: brainly.com/question/678145
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Answer: D) protons.
The other option that would make the most sense would be electrons, however the mass of an electron is so small that is basically negligible, so it's not included in the atomic mass.
Answer: 23.8889
Explanation:
(75°F − 32) × 5/9 = 23.889°C
