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3 years ago

The normal boiling point for h2se is higher than the normal boiling point for h2s . this can be explained by

1 answer:

8 0

H2se is a ionic bond which requires higher energy to change into a gas, while h2s is a covalent bond requiring less energy

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Phosgene is a potent chemical warfare agent that is now outlawed by international agreement. It decomposes by the reaction: COCl

Oksana_A [137]

Answer:

[CO] = 7.61x10⁻³M

7.61x10⁻³x10³ = 7.61

Explanation:

For a generic equation aA + bB ⇄ cC + dD, the constant of equilibrium (Kc) is:

$Kc = \frac{[C]^cx[D]^d}{[A]^ax[B]^b}$

We need to know the molar concentrations in the equilibrium. In the beginning, there is only COCl₂, and its concentration is the number of moles divided by the volume:

[COCl₂] = 7.73/10.0 = 0.773 M

So, the equilibrium will be:

COCl₂(g) ⇆ CO(g) + Cl₂(g)

0.773 0 0 <em>Initial</em>

-x +x +x <em> Reacts</em>

0.773-x x x <em>Equilibrium</em>

Supposing that x<<0.773, then:

$Kc = \frac{x*x}{0.773}$

7.5x10⁻⁵ = x²/0.773

x² = 5.7975x10⁻⁵

x = √5.7975x10⁻⁵

x = 7.61x10⁻³ M

The supposing is correct, so [CO] = 7.61x10⁻³ x 10³ = 7.61

6 0

2 years ago

Why do atoms combine to form compund?

r-ruslan [8.4K]

Answer:

See below

Explanation:

<u>The following reasons tell why atom combine to form compounds:</u>

1) They want to follow octet or duplet rule and attain the noble gas configuration.

2) They combine to form compounds because of the electrostatic attraction between them.

3) They form compounds to lower their energy and to become stable.

$\rule[225]{225}{2}$

Hope this helped!

3 0

3 years ago

What do tissues combine to form?

Morgarella [4.7K]

Organs!!!!!!!!!!!!!!!!!!!!!

6 0

1 year ago

7-¿Cuántos moles de CO2 estarán encerrados en un recipiente metálico a una presión de 1.10 Atm. y una temperatura de 31 °C, sabi

Aleks [24]

Answer:

7- 0.69 moles.

8- El nuevo volumen es 3.8L.

Explanation:

7- Usando la ley general de los gases:

PV = nRT

PV / RT = n

<em>P es presión = 1.10atm</em>

<em>V es volumen = 15.70L</em>

<em>R es constante de los gases = 0.082atmL/molK</em>

<em>T es temperatura absoluta = 31°C + 273.15K = 304.15K</em>

<em />

Reemplazando:

1.10atm*15.70L / 0.082atmL/molK*304.15K = n

<h3>0.69 moles</h3><h3 />

8- La ley combinada de los gases establece como ecuación:

P1V1 / T1 = P2V2 / T2

<em>Donde P1 es la presión inicial = 760mmHg</em>

<em>V1 volumen inicial = 2L</em>

<em>T1 es temperatura absoluta = 273.15 + 27 = 300.15K</em>

<em />

Reemplazando:

760mmHg*2L / 300.15K = 380mmHg*V2 / 285.15K

3.8L = V2

<h3>El nuevo volumen es 3.8L</h3>

4 0

2 years ago

Which unit abbreviation is a measurement of force?

Artemon [7]

So,

Recall Newton's Second Law of Motion: force = mass x acceleration

Also recall:

acceleration = velocity/time
velocity = distance/time

Distance is expressed in meters.
Time is expressed in seconds.
Mass is expressed in kilograms.

v = m/s
a = m/s^2
F = m * a
F = kg * m/s^2

$F= \frac{kg*m}{s^2}$

The unit for force is the Newton (N).

4 0

3 years ago

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