<u>standardization of a volumetric solutio</u><u>n used for titration is one of the most important preconditions for reliable and transparent titration results.</u>
Light is given off, a permanent color change occurs, gas is given off, heat is given off, and a precipitate is formed<span />
Answer:
The melting point of Gold is 1064.43 degrees celsius and the boiling point is 2807 degrees celsius.
Answer: I'm not sure what answer to give you since there are no answer choices, but here is what I got.
Explanation:
Mg is a reducing agent, Fe 2O 3 is an oxidizing agent.
Igniting a mixture of Fe2O3 and Al with a magnesium ribbon fuse produces molten iron and aluminum oxide in an impressive exothermic reaction.
Hope this helped a little:(
Answer:
(D) (CH3CH2)2NH
Explanation:
In order to decide which base is strongest we need to calculate its PKb
PKb = -log [Kb]
A large Kb value and small PKb value gives the strongest base
Compound Kb PKb
(A) C6H5NH2 - 4 x 10^-10 9.349
(B) NH3 1.76x 10^-5 4.754
(C) CH3NH2 4.4x 10^-4 3.357
(D) (CH3CH2)2NH 8.6x 10^-4 3.066
(E) C5H5N 1.7x10^-9 8.77
Clearly (CH3CH2)2NH is the strongest base.
