The chemical equation below shows the combustion of propane c3h8

Asked by maham237 @ 28/06/2021 in Chemistry viewed by 319 People

propane (C3H8). C3H8 + 5O2 mc012-1.jpg 3CO2 + 4H2O

The molar mass of oxygen gas (O2) is 32.00 g/mol. The molar mass of C3H8 is 44.1 g/mol. What mass of O2, in grams, is required to completely react with 0.025 g C3H8?

) 0.018
b) 0.034
c) 0.045
d) 0.091

Answered by maham237 @ 28/06/2021

The balanced chemical
reaction will be:

C3H8 + 5O2 = 3CO2 +4H2O

We are given the amount of propane gas to be burned. This will be
our starting point.

0.025 g C3H8 ( 1 mol C3H8 / 44.1 g C3H8 ) ( 5 mol O2/1
mol C3H8)(32 g O2 / 1 mol O2) = 0.09 g O2

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