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Katen [24]
2 years ago
14

How does the number of reactants in a double-displacement reaction

Chemistry
1 answer:
mojhsa [17]2 years ago
5 0
In a typical double displacement reaction, you would have a total of two products (AB + CD —> AD + BC).
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Evaluate each of the statements below. Select those that accurately describe the role of genes and chromosomes in
Mashcka [7]

Answer:

HEY CAN YOU POST YOUR LAST QUESTION AGAIN? CAUSE I HAVE THE ANSWER

7 0
3 years ago
What would happen to the volume of a sample of gas if the temperature was decreased at the same time the pressure was increased?
olasank [31]

Answer:

It would decrease

Explanation:

As temperature decreases the particles in the gas have less kinetic energy and therefore have less energy to overcome the bonds that hold them together and slowly move closer. Furthermore, increased pressure forces them to move closer to each other, decreasing the volume

3 0
3 years ago
A 1.50 L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate the pH of the solution after the addition of 0.100 moles
alexgriva [62]

Answer : The pH of the solution is, 3.41

Explanation :

First we have to calculate the moles of HF.

\text{Moles of HF}=\text{Concentration of HF}\times \text{Volume of solution}

\text{Moles of HF}=0.250M\times 1.50L=0.375mol

Now we have to calculate the value of pK_a.

The expression used for the calculation of pK_a is,

pK_a=-\log (K_a)

Now put the value of K_a in this expression, we get:

pK_a=-\log (6.8\times 10^{-4})

pK_a=4-\log (6.8)

pK_a=3.17

The reaction will be:

                             HF+OH^-\rightleftharpoons F^-+H_2O

Initial moles     0.375     0.100   0.375

At eqm.   (0.375-0.100)      0     (0.375+0.100)

                     = 0.275                    = 0.475

Now we have to calculate the pH of solution.

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[Salt]}{[Acid]}

pH=pK_a+\log \frac{[F^-]}{[HF]}

Now put all the given values in this expression, we get:

pH=3.17+\log [\frac{(\frac{0.475}{1.50})}{(\frac{0.275}{1.50})}]

pH=3.41

Thus, the pH of the solution is, 3.41

8 0
3 years ago
The energy levels of an atom are occupied by<br> A.electrons<br> B.protons<br> C.neutrons<br> D.ions
Vedmedyk [2.9K]

Answer:

A: electrons

Explanation:

5 0
3 years ago
Determine the molecular shape of each compound based on their Lewis structures. NO2 bent linear trigonal planar​
Phoenix [80]

Answer:

Bent

Explanation

Ed

4 0
3 years ago
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