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enot [183]
3 years ago
5

If you burn 28.2g of hydrogen and produce 252g of water, how much oxygen reacted

Chemistry
1 answer:
andrey2020 [161]3 years ago
6 0
15% oxygen is reacted
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Calculate the value of Key in the following reaction if the equilibrium concentrations are
MAXImum [283]

Answer:

The value of the equilibrium constant Kc is 5.45

Explanation:

The "Law of Mass Action" states:

"For a reversible reaction in chemical equilibrium at a given temperature, it is true that the product of the concentrations of the products raised to the stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients is a constant."

This constant was called the equilibrium constant. For a reaction:

aA + bB ⇄ cC + dD

the equilibrium constant Kc is:

Kc=\frac{[C]^{c} *[D]^{d} }{[A]^{a} *[B]^{b} }

In this case, the balanced reaction is:

2 H₂S → 2 H₂ + S₂

So, the equilibrium constant Kc is:

Kc=\frac{[H_{2} ]^{2} *[S_{2} ] }{[H_{2} S]^{2}  }

The equilibrium concentrations are

  • [H₂S] =0.25 M
  • [H₂]= 0.88 M
  • [S₂]= 0.44M

Replacing in the definition of equilibrium constant:

Kc=\frac{(0.88 M)^{2} *0.44 M }{(0.25 M)^{2}  }

Solving:

Kc= 5.45

<u><em>The value of the equilibrium constant Kc is 5.45</em></u>

<u><em></em></u>

7 0
2 years ago
Fill in the coefficients that will balance the following reaction: a0NH4Cl + a1Ag3PO4 → a2AgCl + a3(NH4)3PO4
rosijanka [135]
The equation of the reaction before balancing is 
a0NH₄Cl + a1Ag₃PO₄ → a2AgCl + a3(NH₄)₃PO₄
PO₄³⁻ ion is balanced. 
on the left side, theres 1 (NH₄⁺) ion and right side 3 (NH₄⁺) ions. Therefore if we put the coefficient for NH₄Cl, we will obtain the following equation 
3 NH₄Cl + a1Ag₃PO₄ → a2AgCl + a3(NH₄)₃PO₄
3 Ag⁺ ions on the left side and 1 Ag⁺ ion on the right side, so if we put the coefficient of AgCl as 3, following equation obtained 
3 NH₄Cl + a1Ag₃PO₄ → 3 AgCl + a3(NH₄)₃PO₄
Cl⁻ ions are also balanced now, 3 on either side.
a1 and a3 are 1 as those compounds are as it is, so coefficient is 1 for both 


balanced equation is as follows 
3 NH₄Cl + Ag₃PO₄ → 3 AgCl + (NH₄)₃PO₄
coefficients are 
a0 - 3
a1 - 1
a2 - 3
a3 - 1
8 0
3 years ago
What happens to the electron cloud at very high atomic numbers, when the innermost electrons would, using a non-relativistic mod
marin [14]

Answer:

tough question

Explanation:

8 0
2 years ago
How to find the final temperature
sveta [45]

Answer:

The final temperature will be "12.37°".

Explanation:

The given values are:

mass,

m = 0.125 kg

Initial temperature,

c = 22.0°C

Time,

Δt = 4.5 min

As we know,

⇒  q=mc \Delta t

On putting the estimated values, we get

⇒     =0.125\times 22.0\times 4.5

⇒     =12.37^{\circ}

8 0
3 years ago
Student
s2008m [1.1K]

Does it is a complete qwestion? It

is not clearef

3 0
3 years ago
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