The conversion of chemical energy to mechanical energy is best described by which example? A. sunlight warming the ground B. ele
2 answers:
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Answer: Mass of water produced is 17.3 grams
Explanation:
To calculate the number of moles, we use the equation:
.....(1)
For benzene:
Given mass of benzene = 25.0 g
Molar mass of benzene= 78 g/mol
Putting values in equation 1, we get:
The chemical equation for the reaction follows:
As, oxygen is an excess reagent. Thus benzene is considered as a limiting reagent because it limits the formation of product.
By Stoichiometry of the reaction:
2 moles of benzene produces 6 moles of water
So, 0.32 moles of benzene will produce = of water
Now, calculating the mass of water from equation 1, we get:
Molar mass of water= 18 g/mol
Moles of water = 0.96moles
Putting values in equation 1, we get:
Thus mass of water produced is 17.3 grams