I don’t know if this would help but my cousin said this: Molecular weight of chlorine = 71, so 7.1/71 = 0.1 mol of Cl2
Answer:
C = 0.08M
Explanation:
molar mass of AlCl3
Al =27
Cl = 35.5
27+3(35.5) =133.5g/mol
n= mass/Molar mass
n =CV
CV = mass/molar mass
C x 500 x 10^-³ = 5/133.5
C x 500 x 10^-³ = 0.04
C = 0.04/500 x 10^-³
C = 0.08M
Assume you have 1 L of the material (you can assume any volume you want, you'll get the same answer).
<span>Using the density, the one L has a mass of 1114 g </span>
<span>20% by mass of phosphoric acid means the mass of phosphoric acid is 0.20 * 1114 g </span>
<span>Calculate the moles of phosphoric acid </span>
<span>Molarity, M, mole / L = moles of acid / volume or 1 L</span>
Answer:
Napoleon Bonaparte
Explanation:
Napoleon Bonaparte was pleased by Berthollet's accomplishments and hired Berthollet in 1798 for his expedition in Egypt, wherein he founded the Institut d'Egypte. He has become the chief scientist at the Institut de France following his homecoming to Paris, and he set up a private laboratories at his country residence in Arcueil on the outskirts of The capital.
Answer:
We would see 5 peaks. 35Cl the lightest and 37Cl2 the heaviest
Explanation:
The chlorine element has two isotopes (35 Cl and 37 Cl), in the mass spectrum we can observe the m/e of the diatomic molecules. Formed by an atom of chlorine 35 and another of chlorine 35. Or one of Cl 35 and one of Cl 37. Or both of Cl 37.
We can also observe the mass of each separately. That is why we would see 5 peaks.
- Cl = 35 <------------------------- lightest
- Cl = 37
- Cl2 = 35 + 35 = 70
- Cl2 = 35 + 37 = 72
- Cl2 = 37 + 37 = 74 <-------- heaviest