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Ray Of Light [21]
4 years ago
15

Chemistry!! Help please!!

Chemistry
1 answer:
Flura [38]4 years ago
4 0
1. The conjugate acid-base pairs are HCl/Cl- and NH3/NH4+. They can be changed into one another by proton transfer.

2. The acid in the reaction is the molecule that has the lowest pKa value or (simply) gives their proton away the easiest. The pKa of HCl is around 3 I think while ammonia’s is around 35. This means HCl is the acid here. In the other reaction (backwards) you can see that NH4+ gives a proton to the chloride ion. To give a proton = acid. So the acids are HCl and NH4+ and the bases are NH3 and Cl-.

An important rule is: The stronger the acid/base, the weaker its conjugate base/acid.
You might be interested in
The correct name for the compound N₂O₃ is *
bearhunter [10]

Answer:

Dinitrogen trioxide.

Explanation:

The correct name for the compound N_2O_3 is dinitrogen trioxide. The compound N_2O_3 also happens to be a <em>covalent compound</em>, and the nomenclature of covalent compounds involves the usage of numerical prefixes such as <em>"mono-"</em> and <em>"tri-"</em>.

Since there are two nitrogen atoms in the compound N_2O_3, we can use the numerical prefix "di-", meaning two, to signify that.

Since there are three oxygen atoms in the compound N_2O_3, we can use the numerical prefix "tri-", meaning three, to signify that.

8 0
3 years ago
What would the percentage of thorium-232 (parent compound) be in a rock that was dated 1.4 billion years?
trasher [3.6K]

Answer:

93.33%

Explanation:

Thorium is a radioactive element with a molecular weight of 232g/mol. Thorium is very stable and can have 14.05 billion years of half-life period. Every half-life passed, the parent compound mass will be decayed by half. If the age of the rock is 1.4 billion years, then the amount of the parent compound will be:r = ½^(time elapsed/half-life)

r = ½^(1.4bil years/14.05 bil years)

r = ½^(0.0996)= 0.9333

r= 93.33%

The rock will have 93.33% of the parent compound and 6.67% of the decayed compound.

5 0
4 years ago
Which of the following is a result of increasing the temperature of a system that includes a reaction in the forward direction t
kogti [31]

Answer:

I believe the answer your looking for is out of A or B

Explanation:

Option B because if the heat increases its essentially causing the concentration to increase by replacing the weak bonds with stronger ones

7 0
3 years ago
WILL GIVE BRAINIEST Watered down koolaid is an example of
vovangra [49]
The answer is a
hope that helped
7 0
3 years ago
What happens to the average kinetic energy of the particles in a sample of matter as the temperature of the sample is increased?
antiseptic1488 [7]

Answer:

  • <em>As the temperature of a sample of matter is increased, the average kinetic energy of the particles in the sample </em><u>increase</u><em>.</em>

Explanation:

The <em>temperature</em> of a substance is the measure of the <em>average kinetic energy </em>of its partilces.

The temperature, i.e. how hot or cold is a substance, is the result of the collisions of the particles (atoms or molecules) of matter.

The kinetic theory of gases states that, if the temperature is the same, the average kinetic energy of any gas is the same, regardless the gas and other conditions.

This equation expresses it:

  • Avg KE = (3/2) (R / N) T

Where Avg KE is the average kinetic energy, R is the universal constant of gases, N is Avogadro's constnat, and T is the temperature measure in absolute scale (Kelvin).

As you see, in that equation Avg KE is propotional to T, which means that as the temperature is increased, the average kinetic energy increases.

7 0
3 years ago
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