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Efficiency (%) = 20%

Explanation:

The question requires the determination of efficiency based on the given proportions in the diagram

The total energy supplied in the system = 10 J

The area representing the total energy supplied ≈ 90 unit²

The area representing the energy wasted ≈ 8 unit × 9 unit = 72 unit²

The area representing the useful energy ≈ 2 unit × 9 unit = 18 unit²

∴ 90 unit² = 10 J

1 unit² = 1/9 J

∴ The energy wasted ≈ 72 unit² × 1/9 J/unit² = 8 J

The useful energy ≈ 18 unit² × 1/9 J/unit² = 2 J

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

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