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abby894927
21.10.2020 •
Chemistry
gaseous butane (CH3(CH2)2CH3) will react with gaseous oxygen (O2) to produce carbon dioxide (CO2) and gaseous water (H2O). suppose 1.16 g of butane is mixed with 7.6 g of oxygen. calculate the minimum mass of butane that could be left over by the chemical reaction. round your answer to 2 significant digits.
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Ответ:
We are given the equation:
2C4H10(g)+13O2(g)→8CO2(g)+10H2O(g)
we are also given that 1.16 grams of butane and 7.6 grams of oxygen are used in this reaction
Moles of Butane provided in the reaction:
Molar mass of butane = 58 g/mol
Number of moles = given mass / molar mass
Number of moles = 1.16 / 58
Number of moles = 0.02 moles
Moles of Oxygen provided in the reaction:
Molar mass of oxygen = 16 g/mol
Number of moles = given mass / molar mass
Number of moles = 7.6 / 16
Number of moles = 0.475 moles
Finding the Limiting reagent:
Since the number of moles of Butane is less that of oxygen, butane is the limiting reagent
So, number of moles of Oxygen used = Number of moles of Butane * 13/2
Number of moles of O2 used = 0.02 * 13/2 = 26 / 200 = 0.13 moles
Since Butane is the limiting reagent, the mass of butane left over is 0 grams
rounding to 2 significant digits: 00 grams of Butane
Ответ:
correct
Explanation:
on edgenuity :D