Answer:
![5.225x10^{22}atoms\ I](https://tex.z-dn.net/?f=5.225x10%5E%7B22%7Datoms%5C%20I)
Explanation:
Hello!
In this case, since 12.75 g of calcium iodide has the following number of moles (molar mass = 293.89 g/mol):
![n_{CaI_2}=12.75gCaI_2*\frac{1molCaI_2}{293.89gCaI_2}=0.0434molCaI_2](https://tex.z-dn.net/?f=n_%7BCaI_2%7D%3D12.75gCaI_2%2A%5Cfrac%7B1molCaI_2%7D%7B293.89gCaI_2%7D%3D0.0434molCaI_2)
In such a way, since 1 mole of calcium iodide contains 2 moles of atoms of iodine, and one mole of atoms of iodine contains 6.022x10²³ atoms (Avogadro's number), we compute the resulting atoms as shown below:
![atoms\ I=0.0434molCaI_2*\frac{2molI}{1molCaI_2} *\frac{6.022x10^{23}atoms\ I}{1molI} \\\\atoms\ I = 5.225x10^{22}atoms\ I](https://tex.z-dn.net/?f=atoms%5C%20I%3D0.0434molCaI_2%2A%5Cfrac%7B2molI%7D%7B1molCaI_2%7D%20%2A%5Cfrac%7B6.022x10%5E%7B23%7Datoms%5C%20I%7D%7B1molI%7D%20%5C%5C%5C%5Catoms%5C%20I%20%3D%205.225x10%5E%7B22%7Datoms%5C%20I)
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The answer is 0.375 mol of silver chromate
A vapor is which state of matter?
C. Gas.
You run approximately 16404 feet.