Answer:
0.100 M AlCl₃
Explanation:
The variation of boiling point by the addition of a nonvolatile solute is called ebullioscopy, and the temperature variation is calculated by:
ΔT = W.i
Where W = nsolute/msolvent, and i is the Van't Hoff factor. Because all the substances have the same molarity, n is equal for all of them.
i = final particles/initial particles
C₆H₁₂O₆ don't dissociate, so final particles = initial particles => i = 1;
AlCl₃ dissociates at Al⁺³ and 3Cl⁻, so has 4 final particles and 1 initial particle, i = 4/1 = 4;
NaCl dissociates at Na⁺ and Cl⁻ so has 2 final particles and 1 initial particle, i = 2/1 = 2;
MgCl₂ dissociates at Mg⁺² and 2Cl⁻, so has 3 final particles and 1 initial particle, i = 3/1 = 3.
So, the solution with AlCl₃ will have the highest ΔT, and because of that the highest boiling point.
Answer:
krypton,radon, and silicon
The atomic number of an element tells you the number of protons that an atom of the given element has.
Answer:
Explanation:
MM: 2.016 17.03
N₂ + 3H₂ ⟶ 2NH3
m/g: 26.3
1. Theoretical yield
(a) Moles of H₂
(b) Moles of NH₃
(c) Theoretical yield of NH₃
(d) Percent yield
Answer:
Explanation:
1. First balance the equation for the synthesis of cryolite:
2. Find the limiting reagent between the 
and 
- First calculate the number of moles of each compound using its molar mass and the mass that reacted completely:
- Divide the number of moles obtained between the stoichiometric coefficient of each compound in the chemical reaction:
The 
is the limiting reagent because it has the smallest number.
3. Find the mass of cryolite produced:
