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LekaFEV [45]
4 years ago
12

A solution is prepared by dissolving 1.86g of kcl and 8.29g of k2co3 in enough water to make uo the final volume of 500 cm3. Wha

t is the concentration of the potassium ion in the solution?
Chemistry
1 answer:
Verizon [17]4 years ago
4 0
99.6 mg= .0996 g
.0996g x (1mol/125.05g) x (1 mol SO3/1 mol Na2SO2) x (6.02 x 10^22/1mol SO3) = 4.79 x 10^19 SO32- ions
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The following reaction mixture contains 0.22 M CH4, 0.67 M CO2 and 1.3 M H2O. Which of the following statements is TRUE concerni
Alekssandra [29.7K]

Answer:

Reaction is shifting left toward reactant side

Explanation:

4CuO(s) + CH₄(g) <=?=> CO₂(g) + Cu(s) + 2H₂O(g)

---------      0.22M             0.67M     -------    1.30M

Qc = [O₂(g)][H₂O(l)]²/[CH₄(g)] = (0.67)(1.30)²/(0.22) =5.12

Kc = 1.1 < Qc = 5.12 => Reaction is shifting LEFT and reactant concentrations are increasing with product concentrations decreasing. Qc will be decreasing and final Kc value will be lower than original Qc upon reaching equilibrium stability.  

_____________________

FYI Note => For reaction mixtures the following is a good guide to reaction response to applied system stress. Note the conclusion follows the direction the inequality symbol is pointing.  

Kc  <  Qc  => Rxn system is shifting Left

Kc =   Qc  => Rxn system is at equilibrium

Kc >  Qc  => Rxn system is shifting Right

6 0
3 years ago
The feel, appearance, or consistency of a surface, substance, or fabric?
kozerog [31]

Answer:

texture

Actually, texture is defined as the physical composition of something, or the look and feel of fabric.

Explanation:

An example of texture is the smooth feeling of satin.

3 0
3 years ago
I am in need of help!!! I need someone who is really good with Chemistry to message me asap would be best if at all possible
timofeeve [1]
Im good at it message me so ya hope this helps you 

6 0
4 years ago
Which set of elements represents a period within the Periodic Table?
topjm [15]
Which set of elements represents a period within the Periodic Table?


H, He, Ar , Xe , Rn ,


N, P, As, Sb , Bi


K, V, Fe, Ga , Kr

La, Pa, Sm, Tb, Yb Which set of elements represents a period within the Periodic Table?


H, He, Ar , Xe , Rn ,


N, P, As, Sb , Bi


K, V, Fe, Ga , Kr

La, Pa, Sm, Tb, Yb

6 0
3 years ago
How does changing the temperature affect the chemical reaction?
Rufina [12.5K]

Answer:

C

Explanation:

Temperature is directly related to kinetic energy (KE). As we raise temperature, we are raising KE, as well. Particles with more KE move more quickly and with more force.

This means that these particles are more likely to collide with each other and react to allow the chemical reaction to follow through. In turn, if the chemical reaction is more likely to go to completion, the reaction rate increases, eliminating A and B.

The concentration of the solute is not affected by the temperature; in other words, temperature will not increase or decrease the amount of solute in the solution, so eliminate D.

Thus the answer is C.

Hope this helps!

4 0
4 years ago
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