Answer:
Heat flows from the lower-temperaturesubstance to the higher-temperaturesubstance. Heat does not flowbecause both substances are at the same temperature. ... Heat is the energy that flows between twosubstances of different temperatures.Heat is the energy that flows between two substances of different temperatures.
Arrhenius Acid:
Arrhenius Acid is any specie which when dissolved in water produces H⁺ (proton) Ions.
Nitrous Acid:
Nitrous Acid also acts as Arrhenius Acid when dissolved in water.
HNO₂ + H₂O → NO₂⁻ + H₃O⁺
Where,
H₃O⁺ ⇆ H⁺ + H₂O
As HNO₂ produces H⁺ Ions in water, so it is an Arrhenius Acid.
Ndeed, most of the alkene<span> addition </span>reactions<span> discussed earlier also take place ... This behavior is nicely </span>explained<span> by differences in the stages of the </span>hydrogenation reaction<span>. ... For </span>examples<span> and a discussion of </span>mechanisms<span> click here. ... to double bonds which </span>give<span> alcohol products, </span>addition of water<span> to alkynes </span>gives<span> ketone ...</span>
Answer:
Aromatic
Explanation:
Estradiol is an aromatic compound because it is composed on one benzene ring and three cyclohexane ring used to each other. The benzene ring is aromatic. Benzene has 6 pi electrons and a cyclic planar structure. The number of pi electrons in benzene equals 4n +2.
Huckel's rule: 4n + 2, where n is a positive integer.
Initially, you should know that what the text describes is a test used to analyze and identify some metal ions in a compound. This is the principle behind it: first the ions are excited, by the heat of the flame, they absorb energy and the electrons are promoted to higher energy levels; after this, the electrons will fall back down to lower energy levels releasing energy as light. The flame color that is seen is related with the frequency of the light emitted.
Here is the text with the right words.
In this experiment, the metal cations in the solutions were initially in
the ground state. When placed in the flame, the metals then (absorbed)
energy as (heat). When this occurred,
electrons made transitions from (low) energy levels to (high)
energy levels. The metals were then in the (excited) state. The
electrons in these metals then made transitions from (high) energy
levels to (low) energy levels, resulting in the (emission) of energy as (EM radiation).