Question

Determine the milligrams of CO when 455 milligrams of:

a) CO₂
b) CO
c) H₂O
d) CH₄

Answer 1

To determine the milligrams of CO when given the masses of CO₂, CO, H₂O, and CH₄, we can use the molar masses and stoichiometry of the chemical equation. For example, when given 455 milligrams of CO₂, the milligrams of CO can be calculated as 289.52 mg.

Step-by-step explanation:

To determine the milligrams of CO, we need to use the molar masses and conversion factors. The molar mass of CO is 28.01 g/mol. In the given question, we have the masses of CO₂, CO, H₂O, and CH₄. We can convert the masses of CO₂, CO, and H₂O to moles using their respective molar masses and then use the stoichiometry of the chemical equation to convert the moles of CO to milligrams. For example, to find the milligrams of CO when we have 455 milligrams of CO₂:

1. Convert the mass of CO₂ to moles: 455 mg CO₂ * (1 g / 1000 mg) * (1 mol CO₂ / 44.009 g CO₂) = 0.01034 mol CO₂
2. Use the stoichiometry of the chemical equation: 6 mol CO₂ produces 6 mol CO, so 0.01034 mol CO₂ * (6 mol CO / 6 mol CO₂) = 0.01034 mol CO
3. Convert the moles of CO to milligrams: 0.01034 mol CO * (28.01 g CO / 1 mol CO) * (1000 mg / 1 g) = 289.52 mg CO