State the function of lipase enzyme?

Predict and explain which fatty acid has the highest melting point in the given group.

Butanoic, palmitic, and stearic acids.

A student carried out an experiment to determine the energy value of $100.00 \mathrm{g}$ of a food product by burning some of it. A $5.00 \mathrm{g}$ sample was burned and the heat produced was used to hear water in a glass beaker. She recorded the following data:

Mass of water heated$=100.00 \mathrm{g}$. 

Initial temperature of water$=19.2 °\mathrm{C}$.

Highest temperature of water$=28.6 °\mathrm{C}$.

Heat capacity of the glass beaker$=90.2 \mathrm{J} {\mathrm{K}}^{-1}$.

Specific heat capacity of water$=4.18 \mathrm{J} {\mathrm{g}}^{-1 }{\mathrm{K}}^{-1}$.

Calculate the energy value for $100.00 \mathrm{g}$ of the food product, in $\mathrm{kJ}$, showing your working. 

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Unsaturated fats contain $\mathrm{C}=\mathrm{C}$ double bonds. The amount of unsaturation in a fat or oil can be determined by titrating with iodine solution.

Define the term iodine number.

Unsaturated fats contain $\mathrm{C}=\mathrm{C}$ double bonds. The amount of unsaturation in a fat or oil can be determined by titrating with iodine solution.

Linoleic acid $\left({\mathrm{M}}_{\mathrm{r}}=281\right)$ has the following formula: ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_4\mathrm{CH}={\mathrm{CHCH}}_2\mathrm{CH}=\mathrm{CH}{\left({\mathrm{CH}}_2\right)}_7\mathrm{COOH}$. Calculate the volume of $1.00 \mathrm{mol} {\mathrm{dm}}^{-3}$ iodine solution required to react exactly with $1.00 \mathrm{g}$ of linoleic acid.

Chocolate is a luxury food made from cocoa, sugars, unsaturated vegetable fats, milk whey, and emulsifiers. Bars of chocolate sold in hot climates are made with a different blend of vegetable fats from bars sold in cold climates.

Suggest how the structure of fat molecules used in a hot climate might differ from those used in a cold climate.

Predict and explain which fatty acid has the highest melting point in the given group.

Oleic, linoleic, and linolenic acids.

How can we test the presence of the following nutrient?

Fats

Examples of straight-chain fatty acids include ${\mathrm{C}}_{19}{\mathrm{H}}_{39}\mathrm{COOH}$, ${\mathrm{C}}_{19}{\mathrm{H}}_{31}\mathrm{COOH}$ and ${\mathrm{C}}_{19}{\mathrm{H}}_{29}\mathrm{COOH}$.

Deduce the number of $\mathrm{C}=\mathrm{C}$ bonds present in one molecule of each fatty acid.