Answer:
3. atoms, ions, or molecules
Explanation:
A crystal is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
Hope this helps!
If you graph the heat added to a system versus the system's temperature, the graph usually slopes upward; adding heat increases temperature.
Answer:
288g
Explanation:
Given parameters:
Number of moles of H₂O = 16moles
Unknown:
Mass of the water = ?
Solution:
To solve this problem, first find the molar mass of H₂O;
Molar mass of H₂O = 2(1) + 16 = 18g/mol
Mass of H₂O = number of moles x molar mass
= 16 x 18
= 288g
Answer:
Q = 3.21 kJ
Explanation:
First, with the heat of hydration and the lattice energy, we can actually calculate the difference between those two to get the heat evolved per mole. In this case it would be:
657 - 639 = 18 kJ/mol
Now, the expression to get the heat is:
Q = m*ΔE
We already have the energy, now we need to get the moles of the cesium chloride.
The molar mass of cesium chloride is 168.36 g/mol, so the moles:
mole = 30/168.36 = 0.1781 moles
Finally the heat:
Q = 0.1781 * 18
Q = 3.21 kJ
Answer:
Ne
Explanation:
Atomic number of Ne is 10.
Electronic configuration of Ne:
![1s^2 2s^2 2p^6](https://tex.z-dn.net/?f=1s%5E2%202s%5E2%202p%5E6)
Octet of Ne is complete . Element having complete octet are stable and behave ideal gas.
and
are reactive and hence, does not behave as ideal gas.