When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 25.2 g of carbon were burned in the presence of 84.5 g of oxygen, 17.3 g of oxygen remained unreacted. What mass of carbon dioxide was produced
To determine the mass of carbon dioxide produced, we need to calculate the amount of oxygen that reacted with carbon first.
1. Start by calculating the mass of oxygen that reacted with the carbon:
Mass of oxygen reacted = initial mass of oxygen - remaining mass of oxygen
= 84.5 g - 17.3 g
= 67.2 g
2. Since carbon and oxygen react in a 1:1 ratio to produce carbon dioxide, the amount of carbon dioxide formed is equal to the mass of oxygen reacted:
Mass of carbon dioxide produced = Mass of oxygen reacted
= 67.2 g
Therefore, the mass of carbon dioxide produced when 25.2 g of carbon reacts with 84.5 g of oxygen is 67.2 g.