I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
Answer:
![m=243.72g](https://tex.z-dn.net/?f=m%3D243.72g)
Explanation:
Hello,
For the given chemical reaction:
![CaO(s) + 3 C(s) \rightarrow CaC_2(s) + CO(g)](https://tex.z-dn.net/?f=CaO%28s%29%20%2B%203%20C%28s%29%20%5Crightarrow%20CaC_2%28s%29%20%2B%20CO%28g%29)
Whose heat of reaction is 464.8 kJ/mol which means that energy is absorbed due to the chemical reaction, we can compute the moles of calcium carbide via the following relationship:
![n=\frac{1770kJ}{464.8 kJ/mol}\\ \\n=3.81mol](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B1770kJ%7D%7B464.8%20kJ%2Fmol%7D%5C%5C%20%5C%5Cn%3D3.81mol)
Then, since the molar mass of calcium carbide is 64 g/mol, the yielded mass turns out:
![m=3.81mol*\frac{64g}{1mol}\\ \\m=243.72g](https://tex.z-dn.net/?f=m%3D3.81mol%2A%5Cfrac%7B64g%7D%7B1mol%7D%5C%5C%20%5C%5Cm%3D243.72g)
Best regards.
It’s the first two answers isn’t it? Because xy=k is inverse