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Sergio [31]
3 years ago
14

Chemical reaction is at equilibrium when ________________.A, chemical reaction is at equilibrium when there is no reverse reacti

on possible, only a forward reaction.B. the rate of the forward reaction equals the rate of the reverse reaction.C. the reaction occurs quickly.D. there are equal amounts of products and reactants
Chemistry
1 answer:
77julia77 [94]3 years ago
7 0

Answer:

B. the rate of the forward reaction equals the rate of the reverse reaction.

Explanation:

Equilibrium -

In a chemical reaction , a point or stage is reached , where the rate of forward reaction , becomes equal to the rate of reverse reaction , is referred to as the stage of equilibrium .

In this very stage the concentration on the reactant as well as product side remains constant .

Hence , from the given information of the question ,

The correct option is b.

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A 34.53 ml sample of a solution of sulfuric acid, h2s04, reacts with 27.86 ml of 0.08964 m naoh solution. calculate the molarity
Gnoma [55]
The balanced equation between NaOH and H₂SO₄ is as follows
2NaOH + H₂SO₄ ---> Na₂SO₄ + 2H₂O
stoichiometry of NaOH to H₂SO₄ is 2:1
number of moles of NaOH moles reacted = molarity of NaOH x volume
number of NaOH moles = 0.08964 mol/L x 27.86 x 10⁻³ L = 2.497 x 10⁻³ mol
according to molar ratio of 2:1
2 mol of NaOH reacts with 1 mol of H₂SO₄
therefore 2.497 x 10⁻³ mol of NaOH reacts with - 1/2 x 2.497 x 10⁻³ mol of H₂SO₄
number of moles of H₂SO₄ reacted - 1.249 x 10⁻³ mol 
Number of H₂SO₄ moles in 34.53 mL - 1.249 x 10⁻³ mol 
number of H₂SO₄ moles in 1000 mL - 1.249 x 10⁻³ mol / 34.53 x 10⁻³ L = 0.03617 mol 
molarity of H₂SO₄ is 0.03617 M
6 0
3 years ago
urgent please help!!!!!! Which factors add to the greenhouse effect and are caused by human activities? Select two options. a de
Sav [38]

Answer:

I would say that the answers are an increase in gases in the atmosphere that absorb heat an increase in surfaces that radiate energy into the atmosphere, and a decrease in the amount of water on Earth’s surface

Explanation:

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The strongest light left over from the big bang is called background radiation and was given off as which type of wave?
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If the energy difference between two electronic states is 214.68 kJ / mol , calculate the frequency of light emitted when an ele
atroni [7]

{\qquad\qquad\huge\underline{{\sf Answer}}}

Here we go ~

Energy difference btween the two electronic states can be expressed as :

{ \qquad \sf  \dashrightarrow \: \Delta E = h\nu}

[ h = planks constant,{\: \nu }= frequency ]

\qquad \sf  \dashrightarrow \:214.68 = 39.79 \times 10 {}^{ - 14}  \times  \nu

\qquad \sf  \dashrightarrow \: \nu =  \cfrac{214.68}{39.79 \times 10 {}^{ - 4} }

\qquad \sf  \dashrightarrow \: \nu =  \cfrac{214.68}{39.79 }  \times 10 {}^{14}

\qquad \sf  \dashrightarrow \: \nu  \approx  5.395 \times10 {}^{14}  \:\:hertz

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Answer:

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Explanation:

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