How many grams of carbon dioxide are produced when 16.0
g of methane and 48.0 g of oxygen gas combust?
Molar mass of CH4 = 16.0 g/mol
Molar mass of O2 = 32.0 g/mol
Molar mass of CO2 = 44.0 g/mol

Respuesta :

Mass of CO₂ = 33 g

Further explanation  

Complete combustion of Hydrocarbons with Oxygen will be obtained by CO₂ and H₂O compounds.  

If O₂ is insufficient there will be incomplete combustion produced by CO and H and O  

Reaction

CH₄ + 2O₂⇒CO₂ + 2H₂O

mol CH₄ :

[tex]\tt =\dfrac{16}{16}=1[/tex]

mol O₂ :

[tex]\tt =\dfrac{48}{32}=1.5[/tex]

A method that can be used to find limiting reactants is to divide the number of moles of known substances by their respective coefficients

[tex]\tt CH_4:O_2=\dfrac{1}{1}:\dfrac{1.5}{2}=1:0.75[/tex]

Because O₂ ratio smaller then O₂ becomes the limiting  reactants

So mol CO₂ from limiting reactants

mol CO₂ :

[tex]\tt \dfrac{1}{2}\times 1.5=0.75[/tex]

mass CO₂ :

[tex]\tt mass=mol\times MW=0.75\times 44=33~g[/tex]

Answer:

33.0

Explanation:

for the people using ck12