<u>X(N03)2</u>
Given: Consider a hypothetical atom x
molecular formula of calcium nitrate = Ca(NO3)2
formula of x chloride is xcl2
molecular formula for x nitrate = ?
- we are first putting calcium with chloride
- on checking calcium on the periodic table we observe it in group 2
- so calcium has two plus charge
- whereas chloride being a halogen it is observed in group 7
- it forms ion with one negative charge which would become CaCl2
- so if we have Ca(NO3)2 and see a Cl2
- with our hypothetical atom x , if the formula of x with chloride as XCl2 then formula with the nitrate is going to be x
- this will be similar to calcium because calcium is just like it when we look at calcium with chloride
- hence when x goes with nitrate it is going to look just like the formula for calcium nitrate
- this gives us the final answer to be <u>X(NO3)2</u>
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Answer:
33.3 kg of air
Explanation:
This is a problem of conversion unit.
Density is mass / volume
Therefore we have to calculate the volume in the room, to be multiply by density. That answer will be the mass of air.
Volume of the room → 9 ft . 11 ft . 10 ft = 990 ft³
Density is in g/L, therefore we have to convert the ft³ to dm³ (1 dm³ = 1L)
990 ft³ . 28.3 dm³ / 1ft³ = 28017 dm³ → 28017 L
This is the volume of the room, if we replace it in the density formula we can know the mass of air in g.
1.19 g/L = Mass of air / 28017 L
Mass of air = 28017 L . 1.19 g/L → 33340 g of air
Finally, let's convert the mass in g to kg → 33340 g . 1kg / 1000 g = 33.3 kg
Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, or between two atoms with sharply different electronegativities, and is the primary interaction occurring in ionic compounds
<span>Bond energy refers to the amount of energy required to break an atomic bond. </span><span>A large value for bond energy corresponds to a more STABLE molecule, which corresponds to a LOWER energy state.
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