Question

How many grams of carbon dioxide are produced when 191 g of methane (CH4) are burned completely down as shown in the reaction below:

CH4+2O2--->CO2+2H20​

Answer 1

Mass = 525.36 g

Step-by-step explanation:

Given data:

Mass of CO₂ formed = ?

Mass of CH₄ burned = 191 g

Solution:

Chemical equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

Number of moles of CH₄:

Number of moles = mass/molar mass

Number of moles = 191 g/ 16 g/mol

Number of moles = 11.94 mol

Now we will compare the moles of CH₄ and CO₂.

CH₄ : CO₂

1 : 1

11.94 : 11.94

Mass of CO₂:

Mass = number of moles × molar mass

Mass = 11.94 mol × 44 g/mol

Mass = 525.36 g