chemistry question

What mass of propane (C3H8) is needed to produce 346 g carbon dioxide in the following reaction?

C3H8(g) + 5O2(g) -> 3CO2(g) + 4H2O(g)

A. 346 g C3H8
B. 115 g C3H8
C. 5075 g C3H8
D. 1.86 g C3H8

asked by Adam
  1. And another name --

    posted by Ms. Sue
  2. You have the balanced equation.
    Convert 346 g CO2 to mols. mol = g/molar mass
    Using the coefficients in the balanced equation, convert mols CO2 to mols propane.
    Now convert mols propane to grams. g = mols x molar mass. Post your work if you get stuck.

    posted by DrBob222
  3. 115 g c3hg

    posted by 8=D

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