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2-81) When a hydrocarbon fuel is burned, almost all of the carbon in the fuel burns completely to form CO2 (carbon dioxide), which is the principal gas causing the greenhouse effect and thus global climate change. On average, 0.59 kg of CO2 is produced for each kWh of electricity generated from a power plant that burns natural gas. A typical new household refrigerator uses about 700 kWh of electricity per year. Deter- mine the amount of CO2 production that is due to the refrigerators in a city with 300,000 households.

Sagot :

Answer:

12.39 x 10⁷ kg

Explanation:

A typical new household refrigerator uses about 700 kWh of electricity per year.

No of household = 300000

Total energy  used up = 300000 x 700 kWh

= 21 x 10⁷ kWh .

Production of each kWh energy produces .59 kg of CO₂

Production of 21 x 10⁷  kWh energy produces .59 x 21 x 10⁷ kg of CO₂

CO₂ produced =  .59 x 21 x 10⁷ kg

= 12.39 x 10⁷ kg

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