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morpeh [17]
3 years ago
8

Given the equation representing a system at equilibrium:Which statement describes the concentration of the two gases in this sys

tem?The concentration of N2O4(g) must be less than the concentration of NO2(g).The concentration of N2O4(g) must be greater than the concentration of NO2(g).The concentration of N2O4(g) and the concentration of NO2(g) must be equal.The concentration of N2O4(g) and the concentration of NO2(g) must be constant.
Chemistry
1 answer:
WARRIOR [948]3 years ago
8 0

Answer:

.The concentration of N2O4(g) and the concentration of NO2(g) must be constant.

Explanation:

N2O4(g)<--------> 2NO2(g)

At equilibrium, all the concentrations of species involved in the equilibrium expression remain constant. This is because, at equilibrium, the rate of forward reaction equals the rate of reverse reaction. The concentration of the system does not change with time. The relative concentration of each specie, remain steady at equilibrium.

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A transition metal in the fourth period from the following list : Cu, O , Pr, Ag
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Answer:

Cu

Explanation:

Groups 3 - 12 (or groups IIA - IIB) of the periodic table contain transition elements. Transaction elements start from period four (4) of the periodic table. The phrase alludes to the fact that the d sublevel is filling at a lower main energy level than the s sublevel that came before it.

The transition elements' arrangement is inverted from the fill order, with the 4 s filled prior to the actual 3 d begins. The transition elements are commonly referred to as transition metals since they are all metals. They are less reactive than the metals in Groups 1 and 2 and have normal metallic characteristics.

From the options given Cu is the only transition metal in the fourth period on the periodic table.

3 0
3 years ago
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Answer:

The electric force is conservative.

Since

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<u>so ,at 10 fm Uf = (2×10)−12 J.</u>

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Answer:

Mass is conserverd

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