Answer: B Reference: Explanation: Type: Multiple Choice DiFculty: Medium Category: Understand 12. The term constant returns to scale describes a situation where A. expanding all inputs does not change the average cost of production. B. a larger-scale Â±rm can produce at a lower cost than a smaller-scale Â±rm. C. expanding all inputs changes the average cost of production. D. the quantity of output rises and the average cost of production falls. Answer: A Reference: Explanation: Type: Multiple Choice DiFculty: Easy Category: Remember 13. In microeconomics, the term ___________________ is synonymous with decreasing returns of scale.
Combustion Reactions. A combustion reaction is when a substance reacts with oxygen and releases a huge amount of energy in the form of light and heat. A combustion reaction always has oxygen as one reactant. The second reactant is always a hydrocarbon, which is a compound made up of carbon and hydrogen. A combustion reaction also always produces CO2 and H2O. Balancing Combustion Reactions. Balancing combustion reactions is easy. First, balance the carbon and hydrogen atoms on both sides of the equation.
Oxidants for combustion have high oxidation potential and include atmospheric or pure oxygen, chlorine, fluorine, chlorine trifluoride, nitrous oxide and nitric acid. For instance, hydrogen burns in chlorine to form hydrogen chloride with the liberation of heat and light characteristic of combustion. Although usually not catalyzed, combustion can be catalyzed by platinum or vanadium, as in the contact process.