Question

a reaction of heating calcium carbonate produces calcium oxide and carbon dioxide gas. heat 10.0 g calcium carbonate until no more carbon dioxide gas is given off. the remaining material has a mass of 5.6 g. what mass of carbon dioxide gas was produced in the reaction? — g enter the answer check it 1/10 skill level exploring

Explanation:

Step1: Write the chemical reaction equation

The decomposition of calcium carbonate ($CaCO_3$) upon heating is $CaCO_3\xrightarrow{\Delta}CaO + CO_2\uparrow$.

Step2: Calculate the molar - masses

The molar mass of $CaCO_3$ is $M_{CaCO_3}=40 + 12+3\times16=100\ g/mol$, and the molar mass of $CO_2$ is $M_{CO_2}=12 + 2\times16 = 44\ g/mol$.

Step3: Determine the mass of $CO_2$ produced

We know that the initial mass of $CaCO_3$ is $m_{CaCO_3}=10.0\ g$. According to the law of conservation of mass, the mass of $CO_2$ produced is the difference between the initial mass of $CaCO_3$ and the final mass of the remaining solid.
The mass of $CO_2$ produced, $m = 10.0 - 5.6=4.4\ g$.

Answer:

4.4