The table below shows information about the properties of four substances, labeled A, B, C, and D.
| Substance | Melting point (∘C^\circ\text{C}∘C) | Boiling point (∘C^\circ\text{C}∘C) | Solubility in water | Does the substance conduct electricity? |
|---|---|---|---|---|
| A | −95-95−95 | 565656 | Soluble | No |
| B | −117-117−117 | 787878 | Soluble | No |
| C | 801801801 | 141314131413 | Soluble | Only when molten or dissolved in water |
| D | 153815381538 | 286228622862 | Insoluble | Yes, in both solid and liquid states |
Identify which separation technique should be used to separate a liquid mixture of substance A and substance B.
Describe a method that could be used to separate a dry mixture of solid substance C and solid substance D to obtain pure samples of both.
A student separates substance C from a sample of a mixture. They start with 5.8 g5.8\text{ g}5.8 g of the mixture and obtain 2.3 g2.3\text{ g}2.3 g of pure substance C.
Calculate the mass of pure substance C that could be separated from 12.0 g12.0\text{ g}12.0 g of this same mixture. Give your answer to 333 significant figures.
Based on their physical properties, identify the type of structure and bonding for substances A, C, and D from the following list: