<span>(2) butynu........................</span>
The ¹H-NMR of 1-Butanol is shown below,
There are
Five signals found in the proton NMR spectrum of 1-Butanol.
A
Broad Singlet signal at ≈
4.7 ppm (Down Field = More Deshielded) is for proton directly attached to Oxygen atom.
Triplet Signal at ≈
3.65 ppm (Down Field = Deshielded) is for methylene group directly attached to Oxygen atom.
Multiplet Signal at ≈
1.6 ppm is for methylene which is present between two methylene groups. The shielding effect is increasing as moving away from Oxygen atom.
Multiplet Signal at ≈
1.4 ppm is for methylene which is present between terminal methyl and methylene groups. The shielding effect is increasing as moving away from Oxygen atom.
Triplet Signal at ≈
0.9 ppm (Up Field = Most Shielded) is for terminal methyl group attached to methylene group.
Result: Five Signals are found in the ¹H-NMR of 1-Butanol.
List four factors that affect how much of a vitamin is available to the body. 1. How much of the vitamin can be absorbed. This can be affected by the composition of the diet. For example, the absorption of fat-soluble vitamins is reduced if the amount of fat in the diet is very low. The presence of other substances in the diet that interfere with absorption are alsoimportant. For example, antithiamin factors may destroy the thiamin in some foods. 2. How much of a vitamin can be absorbed is also affect by digestive processes. For example, if the amount of acid in the stomach is low it may prevent some vitamins from being released from foods. 3. Once inside the body the availability of transport proteins needed to transport vitamins in the blood affect how much is available to the body 4. The amount of a vitamin that is available is also affected by conditions in the body, such as the ability to convert a provitamin to its active form.
Density volume mass intensive and extensive
A) K and Br
Ionic compounds are compounds in which mostly a metal and non-metal bond. Potassium (K) is a metal and Bromine (Br) is a non-metal.