A chemistry student conducted several different procedures. Which of the following procedures best demonstrates the law of conse
rvation of mass?
O using filter paper to separate 2 grams of solid powder from 10 grams of water
O burning 2 kilograms of wood from a pine tree leaves 0.4 kilogram of ash and soot
O evaporating sugar water leaves 5 grams of sugar and turns the water into water vapor
O combining 2 grams of copper and 4 grams of sulfur to make 6 grams of copper sulfate
O using filter paper to separate 2 grams of solid powder from 10 grams of water
O burning 2 kilograms of wood from a pine tree leaves 0.4 kilogram of ash and soot
O evaporating sugar water leaves 5 grams of sugar and turns the water into water vapor
O combining 2 grams of copper and 4 grams of sulfur to make 6 grams of copper sulfate
1 answer:
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Answer:
0.092 %
Explanation:
The equation of the reaction can be computed as :
recall that; the number of moles =
By applying the method of enthalpy of combustion for sucrose at the same time changing the time from hours to seconds, we can determine the total energy output.
i.e
Given that the sun supplies about 1.0 kilowatt, to KJ/m² s, we have:
Finally, the percentage of sunlight used to produce sucrose :
=
= 0.092 %