Respuesta :
Answer:
According to the law of conservation of matter, there should be 6.3 grams of oxygen reacted with the fuel
Explanation:
Step 1: Data given
Mass of fuel = 20.8 grams
In presence of oxygen, there is produced 9.8 grams of CO2 and 17.3 grams of water
According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
This means mass fuel + mass oxygen = mass carbon dioxide + mass water
Mass carbon dioxide = 9.8 grams
Mass water = 17.3 grams
Mass CO2 + H2O = 27.1 grams
Mass of the fuel = 20.8 grams
This means together with the mass of the fuel, the mass of the oxygen should be 27.1 grams
Mass oxygen = 27.1 - 20.8 = 6.3 grams
According to the law of conservation of matter, there should be 6.3 grams of oxygen reacted with the fuel
Answer:
mass O2 = 6.3 g
Explanation:
- X + O2 → CO2 + H2O
∴ X: sample of fuel
"the mass consumed of the reagents is equal to the mass of the products obtained"........law of conservation of matter
⇒ gX + gO2 = gCO2 + gH2O
⇒ gO2 = gCO2 + gH2O - gX
⇒ gO2 = 9.8 gCO2 + 17.3 gH2O - 20.8 gX
⇒ gO2 = 6.3 gO2
