methyl is hydrophobic because it is non polar. the c-h bonds have little electronegativity difference I believe. water is polar, and nonpolar things don't tend to react or dissolve in polar substances.
The name for the CH3-Ch-CH3 alkyl group is isopropyl.
Difficult to draw here, but let's try to describe: Three methyl groups (CH3-) and one H- atom bonded to one central C atom, then you'll get something like this: . . . .H CH3-C-CH3 . . . .CH3
The name for CH3CH(CH3)CH(CH3)CH3 is 2,3-dimethylpentane.
1. hexane: CH3-CH2-CH2-CH2-CH2-CH32. 3-methylpentane: CH3-CH2-CH(CH3)-CH2-CH33. 2-methylpentane: CH3-CH(CH3)-CH2-CH2-CH34. 2,2-dimethylbutane: CH3-C(CH3(CH3))-CH2-CH3
Kb=[(Ch3)3 NH+][OH-] __________ [(Ch3)3 N]
The R group in alanine is a simple methyl group (CH3). This nonpolar, hydrophobic side chain is small and uncharged, making alanine a neutral, aliphatic amino acid.
CH3-C(CH3)2-CH3-C(CH3)2-CH3 , 2,2,4,4-tetramethyl pentane
CH3-C(CH3)2-CH3-C(CH3)2-CH3 , 2,2,4,4-tetramethyl pentane
The correct structure of 3-ethyl-3-methylhexane is: CH3-CH2-CH(CH3)-CH2-CH(CH3)-CH3
The name for the CH3-Ch-CH3 alkyl group is isopropyl.
Difficult to draw here, but let's try to describe: Three methyl groups (CH3-) and one H- atom bonded to one central C atom, then you'll get something like this: . . . .H CH3-C-CH3 . . . .CH3
CH3-CH2-CH3 is a gas Propane.
n-butane CH3-CH2-CH2-CH3 and isobutane CH3-CH(CH3)-CH3
CH3-C(Br)(CH3)-CH3 + H2O = CH3-C(OH)(CH3)-CH3 + HBr
The condensed formula for 2,3,3,4-tetramethylnonane is CH3-CH(CH3)-CH(CH3)-CH2-CH2-CH2-CH2-CH2-CH3.
CH3-CH(=O)-CH(CH3)-CH2-CH3
ethane CH3-CH3 propane CH3-CH2-CH3 butane CH3-CH2-CH2-CH3 (all the above are alkanes, their are a lot of other types of hydrocarbons and carbon-carbon bonds)