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Butane, C4H10, burning in air, is an example of a substance combining with oxygen to produce CO2 and H2O. If pure oxygen were to be supplied, the rate of combustion would increase significantly. Then there is more energy given off when 10 g of butane burns in pure oxygen, rather than in air.
Utility Function
Describes how different combinations of goods or services (or different outcomes) provide levels of satisfaction or utility to an individual.
Substitution Effect
The change in consumption patterns due to changes in the relative prices of goods, leading consumers to substitute more expensive items with cheaper alternatives.
Giffen Good
A product that experiences an increase in demand as its price increases, contrary to the law of demand, typically because it is a staple whose cheaper substitutes are not as affordable.
Inferior Good
A type of good for which demand decreases as the income of the consumer increases, contrary to normal goods.
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