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What is the total heat flow if 28 grams of water at 12°C is cooled to become ice at -19°C? The specific heat of liquid water is 4.18 J/g • °C; the specific heat of ice is 2.1 J/g • °C.The heat of fusion of ice is 333 J/g,and the freezing point of water is 0.0°C.
Agricultural Revolution
A period of technological improvement and increased crop productivity that began in the 18th century.
Spread Of Disease
The expansion of illness or pathogens from one individual to another or through populations, potentially causing an outbreak or epidemic.
Demand For Minerals
The need or desire for minerals, driven by their use in various industries including manufacturing, technology, and construction.
Subsistence Farmers
Farmers who grow food crops to meet the needs of themselves and their families, with little or no surplus for trade.
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