Answer:
Only some of the molecules of a weak base dissociate to produce hydroxide ions when mixed with water, but all of the molecules of a strong base dissociate to produce hydroxide ions.
Explanation:
- Generally, acids (weak or strong) dissociate to produce hydrogen ions, while bases (weak or strong) dissociate to produce hydroxide ions.
- Strong bases dissociate completely to produce hydroxide ions.
- But, weak bases do not dissociate completely to produce hydroxide ions, they dissociate by a percent depending on the strength of the base.
Only some of the molecules of a weak base dissociate to produce hydroxide ions when mixed with water, but all of the molecules of a strong base dissociate to produce hydroxide ions.
Benzyl Amine is synthesized from Toluene in two steps;
Step 1: Bromination of Methyl Group in Toluene: Bromination is carried out on methyl group present on Benzene ring through free radical mechanism by treating toluene with <span>N-Bromosuccinimide (NBS) and Benzyl Bromide is formed.
Step 2: Benzyl Bromide into Benzyl Amine; This step is carried out utilizing a neme reaction "Gabriel Reaction". Benzyl bromide is treated with </span>Potassium Phthalamide and an intermediate is formed which on treatment with Hydrazine produces Benzyl amine.
M=D*V
D=10.5 g/cm³
V=42.5 cm³
m= 10.5 g/cm³ * 42.5 cm³ ≈ 446 g
m≈446 g
The molar mass of the Carbon-12 from the periodic table is given to be 12.011 g. Multiply this mass with the number of moles given.
(0.25 moles) x (12.011 g / mole) = 3 g
Thus, the mass of 0.25 moles of carbon-12 is 3 g.
Answer:
Law of Definite Proportions states that in a given type of chemical substance, the elements are always combined in the same proportions by mass. ... Oxygen makes up 88.8% of the mass of any sample of pure water, while hydrogen makes up the remaining 11.2% of the mass