Answer:
Cerium-140 (Ce)
Explanation:
Cerium-140 has 52 protons and 82 neutrons and is stable.
Sound waves are <em><u>longitudinal</u></em> waves in which particles travels along with the direction of wave and hence creates regions of high pressure and low pressure also known as <em><u>compressions</u></em> and <em><u>rarefactions</u></em>.
So, the correct Option will be :
=》D. All of the above.
Answer:
, no matter what the length of the alkyl group in the arene substrate, the product is always a one-carbon carboxyl group. Thus, the benzylic carbon atom has been oxidized and the term benzylic oxidation is appropriate. The term side-chain oxidation is also commonly used.
In alkylbenzenes, the carbon atom which is attached to the aromatic ring is particularly reactive. Reactions taking place at this carbon atom are said to occur at the benzylic position.
Benzylic halides undergo the typical reactions of alkyl halides; thus, you can expect to see such compounds used frequently in multistep syntheses.
relating to or denoting the most recent era, following the Mesozoic era and comprising the Tertiary and Quaternary periods.
the Cenozoic era, or the system of rocks deposited during it.
singula
Answer:
En lugar de utilizar las ya conocidas unidades de concentración, para la solubilidad es más común emplear la siguiente: Medimos la solubilidad como la cantidad de gramos del soluto que podemos disolver en 100 gramos de disolvente.
Explanation: