Respuesta :
The mass of oxygen required to completely react with C₃H₈ is 0.091 grams.
How we calculate moles from mass?
Moles of any substance will be calculated as:
n = W/M, where
W = given mass
M = molar mass
Given chemical reaction is:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Moles of 0.025g of C₃H₈ will be calculated as:
n = 0.025g / 44.1 g/mol = 0.00056 moles
From the stoichiometry of the reaction it is clear that:
1 mole of C₃H₈ = react with 5 moles of O₂
0.00056 mole of C₃H₈ = react with 5×0.00056=0.0028 moles of O₂
Now we calculate the mass of oxygen by using the above moles and molar mass as:
W = (0.0028mol)(32.00 g/mol) = 0.0896g = 0.090g
Which is approx to the given valoe 0.091g.
Hence correct option is (d).
To know more about moles, visit the below link:
https://brainly.com/question/3262
