Answer: Hydroxyl group -OH
Explanation:
This is because the Hydroxyl group has a single atom which can indicate a singlet on the proton Nmr analysis and the value for -OH is around 4 - 5 ppm as well making the unknown functional group to be likely Hydroxyl group
The valence electron of the light metals are all in the range of 1 to 3.
<h3>What are Valence electron ?</h3>
Valence Electron is the number of electrons in the outer shell of an atom which participate in bond formation.
Number of Valence Electron in Boron is 3 and other light metals lighter than Boron have 1 , 2 of Lithium and Beryllium respectively,
The valence electron of the light metals are all in the range of 1 to 3.
To know more about Valence Electron
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Answer:
Sound waves transfer energy by the motion of particles
Explanation: guessing lol
<u>Answer:</u> The entropy change of the liquid water is 63.4 J/K
<u>Explanation:</u>
To calculate the entropy change for same phase at different temperature, we use the equation:

where,
= Entropy change
= molar heat capacity of liquid water = 75.38 J/mol.K
n = number of moles of liquid water = 3 moles
= final temperature = ![95^oC=[95+273]K=368K](https://tex.z-dn.net/?f=95%5EoC%3D%5B95%2B273%5DK%3D368K)
= initial temperature = ![5^oC=[5+273]K=278K](https://tex.z-dn.net/?f=5%5EoC%3D%5B5%2B273%5DK%3D278K)
Putting values in above equation, we get:

Hence, the entropy change of the liquid water is 63.4 J/K