Substances have more kinetic energy in the gas state than in the solid state
On adding salt.....The boiling temperature increases.....
So ∆t= KB * molality
=O.52*(58/58)/4
= O.52*1/4
= 0.13
So increase is 100+.13=100.13°c
Nah fam, supersaturate is very hard to get. It actually creates crystals and can only be made through using techniques to improve the solubility of the solution.
This would be false. It is a saturated solution
Answer:
![\boxed{\text{6.937 u; X = Li}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Ctext%7B6.937%20u%3B%20X%20%3D%20Li%7D%7D)
Explanation:
1. Write the unbalanced equation
X + N₂ ⟶ X₃N
2. Balance the equation and gather all the data.
MM: 28.01
6X + N₂ ⟶ 2X₃N
m/g 1.486 1.000
3. Calculate the moles of N₂
![\text{Moles of N}_{2} = \text{1.000 g N}_{2} \times \dfrac{\text{1 mol N}_{2}}{\text{28.01 g N}_{2}} = \text{0.035 70 mol N}_{2}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20N%7D_%7B2%7D%20%3D%20%5Ctext%7B1.000%20g%20N%7D_%7B2%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1%20mol%20N%7D_%7B2%7D%7D%7B%5Ctext%7B28.01%20g%20N%7D_%7B2%7D%7D%20%3D%20%5Ctext%7B0.035%2070%20mol%20N%7D_%7B2%7D)
4. Calculate the moles of X
The molar ratio is 6 mol X: 1 mol N₂
![\text{Moles of X} = \text{0.035 70 mol N}_{2} \times \dfrac{\text{6 mol X}}{\text{1 mol N}_{2}} = \text{0.2142 mol X}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20X%7D%20%3D%20%5Ctext%7B0.035%2070%20mol%20N%7D_%7B2%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B6%20mol%20X%7D%7D%7B%5Ctext%7B1%20mol%20N%7D_%7B2%7D%7D%20%3D%20%5Ctext%7B0.2142%20mol%20X%7D)
5. Calculate the molar mass of X
![\text{Molar mass} = \dfrac{\text{mass}}{\text{moles}} = \dfrac{\text{1.486 g}}{\text{0.2142 mol}} = \text{6.937 g/mol}\\\text{The molar mass of X is 6.937 g/mol, so the atomic mass $\boxed{\textbf{6.937 u}}$}](https://tex.z-dn.net/?f=%5Ctext%7BMolar%20mass%7D%20%3D%20%5Cdfrac%7B%5Ctext%7Bmass%7D%7D%7B%5Ctext%7Bmoles%7D%7D%20%3D%20%5Cdfrac%7B%5Ctext%7B1.486%20g%7D%7D%7B%5Ctext%7B0.2142%20mol%7D%7D%20%3D%20%5Ctext%7B6.937%20g%2Fmol%7D%5C%5C%5Ctext%7BThe%20molar%20mass%20of%20X%20is%206.937%20g%2Fmol%2C%20so%20the%20atomic%20mass%20%24%5Cboxed%7B%5Ctextbf%7B6.937%20u%7D%7D%24%7D)
6. Identify X.
![\text{X has an atomic mass of 6.937 u, so $\boxed{\textbf{X = Li}}$ (at. mass 6.94 u)}](https://tex.z-dn.net/?f=%5Ctext%7BX%20has%20an%20atomic%20mass%20of%206.937%20u%2C%20so%20%24%5Cboxed%7B%5Ctextbf%7BX%20%3D%20Li%7D%7D%24%20%28at.%20mass%206.94%20u%29%7D)
Answer:
The answer is b) Less solid will disolve, because the larger value of [OH]- will cause the equilibrium position to lie farther to the left.
Explanation:
According to the reactions:
Ca(OH)2 = Ca2+ + 2OH-
NaOH = Na+ + OH-
The balance in the less solid solution will shift to the left, to keep the sodium hydroxide concentration in balance. This is produced by the common ionic effect in both reactions due to hydroxide (OH-) ions that are created due to sodium hydroxide NaOH, therefore, the solubility of calcium hydroxide Ca(OH)2 will be reduced. In conclusion we can say that the balance in the reaction will be more to the left.