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Vikentia [17]
3 years ago
11

Filtration, or screening, is one way to separate certain mixtures, as shown in the image. Which of these mixtures could be most

easily separated by filtration? A) oil and water B) dissolved sugar and water C) sugar and salt D) flour and marbles
Chemistry
1 answer:
erastovalidia [21]3 years ago
3 0

Answer: D

Explanation:

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.500 mol of br2 and .500 mol of cl2 are placed in a .500L flask and allowed to reach equilibrium. at equilibrium the flask was f
Tasya [4]

Answer : The value of K_c for the given reaction is, 0.36

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

Br_2(aq)+Cl_2(aq)\rightleftharpoons 2BrCl(aq)

The expression of K_c will be,

K_c=\frac{[BrCl]^2}{[Br_2][Cl_2]}

First we have to calculate the concentration of Br_2,Cl_2\text{ and }BrCl.

\text{Concentration of }Br_2=\frac{Moles}{Volume}=\frac{0.500mol}{0.500L}=1M

\text{Concentration of }Cl_2=\frac{Moles}{Volume}=\frac{0.500mol}{0.500L}=1M

\text{Concentration of }BrCl=\frac{Moles}{Volume}=\frac{0.300mol}{0.500L}=0.6M

Now we have to calculate the value of K_c for the given reaction.

K_c=\frac{[BrCl]^2}{[Br_2][Cl_2]}

K_c=\frac{(0.6)^2}{(1)\times (1)}

K_c=0.36

Therefore, the value of K_c for the given reaction is, 0.36

6 0
2 years ago
Read 2 more answers
Help please please please!
LenaWriter [7]

Answer:

I say the second one, im not rlly sure tho

Explanation:

5 0
2 years ago
How many electrons should Nitrogen (N) have around its Lewis dot model?
Delvig [45]

Answer:

5

Explanation:

3 0
3 years ago
What group is nickel in?<br> O2<br> 010<br> O 15<br> O4
Ronch [10]

Answer:

010

Explanation:

Group 10

Nickel (Ni), chemical element, ferromagnetic metal of Group 10 (VIIIb) of the periodic table, markedly resistant to oxidation and corrosion.

Hope this helps!

3 0
3 years ago
For the following nuclear reaction, what was the beginning radionuclide (X)? X → 86Rn222 + 2He4
BigorU [14]
The original radioisotope underwent double-alpha decay, where the original nucleus lost a total of 4 protons and 4 neutrons.

The original radioisotope would have an atomic number of 86+4 (protons), and would have an atomic mass of 222+8 (protons + neutrons). This would make the element Thorium-230, or 90Th230.
3 0
3 years ago
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