This information was taken from a nutrition label on a tub of vegetable spread.
| Nutritional information | (per 10g serving) |
|---|---|
| Energy | 300 kJ |
| Protein | 0.1 g |
| Carbohydrate | 0.2 g |
| Fat | 8.0 g |
| saturated | 2.5 g |
| unsaturated | 5.5 g |
Which type of fat contains a double carbon-to-carbon (C=C\text{C}=\text{C}C=C) bond?
The colour of bromine water is orange. State the final colour of the mixture after bromine water is shaken with:
What type of reaction takes place when bromine reacts with a compound containing a C=C\text{C}=\text{C}C=C bond?
Some herbal beverage companies had to recall their products because they were found to contain a banned synthetic stimulant, Stimulant X.
The chromatogram below shows how the chemical components in the herbal extracts were detected and identified.
Which one of the tested herbal extracts, W, X, Y, or Z, is made up of only one compound?
Identify the herbal extracts that may contain the banned Stimulant X.
Explain how the chromatogram shows that the five extracts are different from each other.
