Which nonmetal would an ion of Ca2+ MOST LIKELY ionically bond with in a 1:1 ratio?
2 answers:
Explanation:
Atomic number of calcium is 20 and its electronic configuration is 2, 8, 8, 2.
Since it has two extra electrons, therefore, it donate these electrons to an electron deficient atom that needs only two electrons to complete its octet.
Oxygen atom has electronic configuration 2, 6. Hence, it is the atom that needs two electrons to complete its octet. So, it forms a compound of calcium oxide (CaO).
Thus, oxygen will most likely ionically bond with in a 1:1 ratio with .
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<u>Answer:</u> The mass of water that should be added in 203.07 grams
<u>Explanation:</u>
To calculate the molality of solution, we use the equation:
Where,
m = molality of barium iodide solution = 0.175 m
= Given mass of solute (barium iodide) = 13.9 g
= Molar mass of solute (barium iodide) = 391.14 g/mol
= Mass of solvent (water) = ? g
Putting values in above equation, we get:
Hence, the mass of water that should be added in 203.07 grams