Answer:
Explanation:
Efficiency of the electric power plant is 
Here Temperature of hot source 
and Temperature of sink 
Hence the efficiency is
Now another formula for thermal efficiency Is

Here QI is the of heat taken from source 100 MJ ; Q2 of heat transferred to the sink (river) to be found
W is the of work done and W = QI -Q2
Hence From

Hence the of heat transferred to the river Is 
Answer:
a). The products are C6H12O6 O2 and the reactants are CO2 + H20 + (solar (light) energy)
b). The reaction chemical reaction is balanced from the number of moles of reactants and products
Explanation:
Through photosynthesis green plants, some protistans and some bacteria in the presence of energy from sunlight, produce glucose as well as oxygen from carbon dioxide and water.
It is a chemical reaction taking place in green plant to produce food which it uses to survive.
Photosynthesis requires carbon dioxide, water and solar energy in the leaves of a plant for it to take place.
The equation for photosynthesis is as follows: 6CO2 + 6H20 + (solar (light) energy) → C6H12O6 + 6O2
The products are C6H12O6 O2
and the reactants are CO2 + H20 + (solar (light) energy)
The reaction chemical reaction is balanced from the number of moles of reactants and products
CH4 + 2O2 -> 2H2O + CO2
You need to add a 2 in front of the O2 and H2O in order to balance the equation.
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