Answer:
The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress.
Answer:
Sound waves are faster than light waves when traveling through the air.
(This statement is NOT true)
or
Sound waves and electromagnetic waves are both needed to talk on a cell phone
Explanation:
Sound waves need a medium to travel through, but light does not.
Also, the statement "Sound waves and electromagnetic waves are both needed to talk on a cell phone" might also be NOT true, since, as far as I know, cellphone calls need radio and sound waves, not electromagnetic waves.
Answer:
A functional group in organic chemistry is an atom or group of atoms that is responsible for the specific properties of an organic compound. Some examples of functional groups include alcohols, alkyl halides, ethers, aldehydes, ketones, amines, carboxylic acids, and esters.
Functional groups also play an important part in organic compound nomenclature; combining the names of the functional groups with the names of the parent organic compounds provides a way to distinguish compounds.
The atoms of a functional group are linked together and to the rest of the compound by covalent bonds. The first carbon atom that attaches to the functional group is referred to as the alpha carbon; the second, the beta carbon; the third, the gamma carbon, etc. Similarly, a functional group can be referred to as primary, secondary, or tertiary, depending on if it is attached to one, two, or three carbon atoms.
Answer:
There are 4 monochloro isomers possible
Explanation:
The monochlorination of 2-methyl butane has 4 monochloro isomers, with different grade of abundance.
33 % 2-chloro-3-methylbutane
30 % 1-chloro-2-methylbutane
22 % 2-chloro-2-methylbutane
15 % 1-chloro-3-methylbutane.
33 % 2-chloro-3-methylbutane is the most stable; 15 % 1-chloro-3-methylbutane is the less stable.
Of those 4 monochloro isomers, there are two chiral compounds possible
⇒ 2-chloro-2-methylbutane
⇒ 2-chloro-3-methylbutane.
