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lions [1.4K]
3 years ago
11

Which of the following is a weak base ?

Chemistry
2 answers:
Scrat [10]3 years ago
7 0
<span>NH3 is the answer, if u look up its ph its a weak base</span>
inysia [295]3 years ago
5 0

Answer:

NH3 (ammonia)

Explanation:

(apex)

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how does a decrease in potential energy during a chemical rwaction relate to the temperature of the surroundings​
blondinia [14]

Answer: If the potential energy of the reaction system decreases, then kinetic energy in the surroundings increases and the temperature of the surroundings rises

Explanation:

3 0
2 years ago
In Atomic Absorption Spectrophotometry, narrow atomic lines are desirable. However, line broadening arises from: (a) Jablonski e
LenKa [72]

Answer: b) Doppler Effect

Explanation:

Line broadening in AAS, arises due to some effects, which can occur due to a number of factors. The line width broadening effects include: Doppler, Lorentz, Self absorption, and quenching effects.

Doppler effect arises because along the line of observation, atoms will have different components of velocity.

7 0
3 years ago
Ph is a scale that ____ the audacity or basicity of a solution along the range of zero to 14
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2 years ago
An example of a homogeneous mixture is 1. oil and vinegar dressing. 2. concrete. 3. a mixture of salt and pepper. 4. salt water
Sidana [21]

A mixture in which composition is constant throughout the mixture is said to be homogeneous mixture.

Now, oil and vinegar dressing is not considered as a homogeneous mixture because composition is not uniform.

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A mixture of salt and pepper, when salt is mixed in pepper then the mixture is not uniform as white flecks of salt and black flecks of pepper can be seen in the mixture. Thus, it is not a homogeneous mixture.

Salt water is uniform mixture. Thus,  it is a homogeneous mixture.

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4 0
3 years ago
Glycolysis is the process by which energy is harvested from glucose by living things. Several of the reactions of glycolysis are
pantera1 [17]

Answer:

1. Options A and B

2. Options B and C

3.. B. Net ∆G = -16.7 KJ/mol; C. Net ∆G = -14.2 KJ/mol

Explanation:

1. The spontaneity of a chemical reaction depends on its standard free energy change, ∆G. If ∆G is negative, the reaction is favourable, but when it is positive, the reaction is unfavorable.

Therefore, since reaction A and B have ∆G to be positive, they are unfavorable

2. Coupling an unfavorable reaction to a favourable reaction can help the reaction to proceed in the forward direction as long as the net free energy change is negative.

Coupling reaction A and C, as well as reaction B and C will make the reactions to become favourable as net ∆G is negative in both instances.

3. A and C: net ∆G = 13.8 - 30.5 = -16.7 KJ/mol

B and C: net ∆G = 16.3- 30.5 = -14.2 KJ/mol

4 0
2 years ago
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