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2 years ago

PLSSSS HELP this is science

Chemistry

2 answers:

jenyasd209 [6]2 years ago

4 0

Answer:

<h2>The answer is C </h2>

Explanation:

when a car begins to slow down the speed that it was going will decrease. Which means that it is an example of deceleration.

djyliett [7]2 years ago

4 0

Answer:

The answers would be : ( a car approaching a red light )

15 N .

F= m.a ----> 15 = 5.3

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An endothermic reaction has

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2 years ago

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A)Completaţi ecuaţiile chimice următoare cu formulele chimice şi coeficienţii adecvaţi:

Scilla [17]

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2 years ago

The equilibrium of 2H 2 O(g) 2H 2 (g) + O 2 (g) at 2,000 K has a Keq value of 5.31 x 10-10. What is the Keq expression for this

nevsk [136]

Answer:

$5.31*10^{-10} = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}$

Explanation:

For a chemical reaction, equilibrium is a state at which the rate of the forward reaction equals that of the reverse reaction. The equilibrium constant Keq is a parameter characteristic of this state which is expressed as a ratio of the concentration of the products to that of the reactants.

For a hypothetical reaction:

xA + yB ⇄ zC

The equilibrium constant is :

$Keq = \frac{[A]^{x}[B]^{y}}{[C]^{z} }$

The given reaction involves the decomposition of H2O into H2 and O2

$2H_{2}O\rightleftharpoons 2H_{2} + O_{2}$

The equilibrium constant is expressed as :

$Keq = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}$

Since Keq = 5.31*10^-10

$5.31*10^{-10} = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}$

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2 years ago

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11Alexandr11 [23.1K]

Answer:

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Explanation:

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2 years ago

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Answer:

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3 years ago