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nikdorinn [45]
2 years ago
7

What's the volume of 0.2 mol of hydrogen at STP.

Chemistry
1 answer:
tia_tia [17]2 years ago
4 0

Answer:

22.4

Explanation:

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How many moles are there in 1.20 x 1025 particles of helium?
Anettt [7]

Answer:

You would get 19.969 moles.

Explanation:

You would get 19.969 moles.

3 0
2 years ago
Most substances can exist as a solid, liquid, or gas depending on ? ( science
earnstyle [38]

Answer:

The amount of energy in molecules of matter determines the state of matter.

Explanation:

The amount of energy in molecules of matter determines the state of matter. Matter can exist in one of several different states, including gas, liquid, or solid-state.

3 0
3 years ago
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Which set of elements has the MOST similar physical and chemical properties?
Nana76 [90]
A k ca sf obviously
7 0
3 years ago
Does anyone know this
LekaFEV [45]

Answer:

                                          Your answer would be (D

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3 0
3 years ago
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Se construye una pila galvánica con una barra de cobre sumergida en una disolución 1M de cationes Fe+2 y una barra de plata sume
pashok25 [27]

Answer:

El potencial celular estándar, E_{cell} is +0.46 V

Explanation:

Las reacciones de media célula son;

Media reacción del ánodo Cu²⁺ + 2e⁻ ↔ Cu, E ° = 0.34 V

Media reacción catódica 2Ag + 2e⁻ ⁻ 2Ag, E ° = 0.80 V

Sin embargo tenemos para hierro Fe²⁺ + 2e⁻ ↔ Fe, E ° -0.44 V

y Fe³⁺ + e⁻ ↔ Fe²⁺, E ° = 0.77 V

 que es más alta que la del cobre presente, por lo tanto, el cobre se oxidará en el ánodo

Por lo tanto, en el ánodo, tendremos

Cu → Cu²⁺ + 2e⁻ (E ° = -0.34 V)

En el cátodo

2Ag + 2e⁻ → 2Ag (E ° = 0.80 V)

E_{cell} = E_c + E_a = -0.34 + 0.8 = +0.46 \, V

El potencial celular estándar, E_{cell} = +0.46 V

4 0
3 years ago
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