Lucy heats some calcium carbonate. She weighs the reaction vessel at the start of the reaction and again after it has been heated.
Calcium carbonate decomposes into calcium oxide and carbon dioxide.
Look at Lucy’s results:
Mass of calcium carbonate before heating = 2.00 g
Mass of calcium oxide left after heating = 1.12 g
a Calculate the mass of carbon dioxide that was released during the decomposition.
CaCO3 + heat ==> CaO + CO2
...2.20 g...................1.12......x
2.20 = 1.12 + x
x = ?
To calculate the mass of carbon dioxide that was released during the decomposition of calcium carbonate, we need to find the difference in mass before and after heating.
1. Start with the initial mass of calcium carbonate before heating, which is given as 2.00 g.
2. Subtract the mass of calcium oxide left after heating, which is given as 1.12 g.
Mass of carbon dioxide released = Mass of calcium carbonate before heating - Mass of calcium oxide left after heating.
Mass of carbon dioxide released = 2.00 g - 1.12 g.
Now, let's do the calculation:
Mass of carbon dioxide released = 2.00 g - 1.12 g = 0.88 g
Therefore, the mass of carbon dioxide that was released during the decomposition of calcium carbonate is 0.88 g.