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Ksju [112]
2 years ago
5

I need help ill give points plssss help

Chemistry
1 answer:
irina1246 [14]2 years ago
5 0
A I think because each side cancels out the other opposite side
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2) Show the calculation of Kc for the following reaction if an initial reaction mixture of 0.800 mole of CO and 2.40 mole of H2
nadezda [96]

Answer:

Kc = 3.90

Explanation:

CO reacts with H_2 to form CH_4 and H_2O. balanced reaction is:

CO(g) + 3H_2 (g) \leftrightharpoons CH_4(g)  +  H_2O(g)

No. of moles of CO = 0.800 mol

No. of moles of H_2 = 2.40 mol

Volume = 8.00 L

Concentration = \frac{Moles}{Volume\ in\ L}

Concentration of CO = \frac{0.800}{8.00} = 0.100\ mol/L

Concentration of H_2 = \frac{2.40}{8.00} = 0.300\ mol/L

                 CO(g) + 3H_2 (g) \leftrightharpoons CH_4(g)  +  H_2O(g)

Initial            0.100      0.300             0   0

equi.            0.100 -x    0.300 - 3x     x    x

It is given that,

at equilibrium H_2O (x) = 0.309/8.00 = 0.0386 M

So, at equilibrium CO = 0.100 - 0.0386 = 0.0614 M

At equilibrium H_2 = 0.300 - 0.0386 × 3 = 0.184 M

At equilibrium CH_4 = 0.0386 M

Kc=\frac{[H_2O][CH_4]}{[CO][H_2]^3}

Kc=\frac{0.0386 \times 0.0386}{(0.184)^3 \times 0.0614} =3.90

8 0
3 years ago
The equation K2O represents the ionic bond between potassium and oxygen. What is the name of the compound?
eduard
Ten name if this compound is Potassium Oxide 
5 0
3 years ago
Read 2 more answers
Atoms and the chemical bonds that connect them cannot be observed with your eyes, so it is necessary to use a
Lera25 [3.4K]

Answer: d. both (b) and (c)

Explanation:

Atoms are too small to be seen on microscopes, so we model them based on theories.

3 0
2 years ago
Read 2 more answers
The electronic configuration of an atom of element X is 2,8,2 what will be the valency of the element x
KIM [24]

The element is Magnesium

  • It has total 12 electrons

it has electronic configuration

\\ \sf\longmapsto 2,8,2

or

\\ \sf\longmapsto 1s^22s^22p^63s^2

In valence cell it has 2 electrons and therefore its valency is 2

6 0
2 years ago
Using knowledge of intermolecular forces, explain why the yellow food coloring mixed with the water and the acetone was able to
Papessa [141]

The yellow coloring is a polar substance hence it dissolve in water. Blue dye is nonpolar hence it dissolves in less polar acetone.

In chemistry, there is a general rule that like dissolves like. A substance can only dissolve in another if there is some kind of intermolecular interaction between the substances.

The yellow food coloring is a polar substance hence it is able to dissolve in water which is a polar solvent. The blue dye is a nonpolar substance hence it dissolve in acetone which is a less polar solvent.

Learn more:  brainly.com/question/9847214

8 0
3 years ago
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