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3 years ago

[O.01]Which of these is the location where sea floor spreading occurs? abyss guyot ocean trenches mid-ocean ridges

Chemistry

1 answer:

Alika [10]3 years ago

6 0

Answer:

Sea floor spreading occurs in mid-ocean ridges

Explanation:

mid-ocean ridge: A location where sea floor spreading occurs. The release of magma at these active volcanic sites forms new rocks and rows of mountains.

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Humans have three types of cone cells in their eyes, which are responsible for color vision. Each type absorbs a certain part of

harkovskaia [24]

Answer:

The frequency of this light is $6.98\times 10^{14} s^{-1}$ .

Explanation:

Wavelength of the light = $\lambda = 430 nm=4.30\times 10^{-7} m$

Speed of the light = c = $= 3\times 10^8 m/s$

Frequency of the light = $\nu$

$\nu =\frac{c}{\lambda }$

$\nu =\frac{3\times 10^8 m/s}{4.30\times 10^{-7} m}=6.98\times 10^{14} s^{-1}$

The frequency of this light is $6.98\times 10^{14} s^{-1}$ .

5 0

4 years ago

Given the equilibrium constants for the following two reactions at a 298K:NiO(s) + H2(g) ⇌ Ni(s) + H2O(g) Kc=40NiO(s) +CO(g) ⇌ N

shusha [124]

Answer:

The value is $K_C = \frac{40}{600}$

Explanation:

From the question

The equation given is

NiO(s) + H2(g) ⇌ Ni(s) + H2O(g) Kc=40 (1)

NiO(s) +CO(g) ⇌ Ni(s) +CO2(g) Kc=600 (2)

Generally the reverse of the second equation as shown below

Ni(s) +CO2(g) ⇌ NiO(s) + CO(g) (3)

The equilibrium constant becomes $K_c ' = \frac{1}{600}$

Now adding 1 and 3 we obtain

NiO(s) + H2(g)+ Ni(s) +CO2(g) ⇌ Ni(s) + H2O(g)+NiO(s) + CO(g)

CO2(g) + H2(g) ⇌ CO(g) + H2O(g)

Hence the equilibrium constant for the resulting equation is mathematically evaluated as

$K_C = K_c' * K_c$

=> $K_C = \frac{1}{600} * 40$

=> $K_C = \frac{40}{600}$

6 0

3 years ago

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. Despite its name, silica gel

Lilit [14]

Answer:

The sign of \Delta GΔG is negative.

The sign of \Delta HΔH is negative.

The sign of \Delta SΔS is negative.

Explanation:

The water vapor is adsorbed on silica gel due to strong hydrophilicity of silica get towards the water.

The thermodynamic properties of adsorbate and adsorbent changes after adsorption. Silica gel is very porous and hydrophilic, thus, it absorbs the water from the shoe box.

The adsorption process occurs spontaneously, therefore Delta G < 0.

When adsorption occurs, bonds are formed between water molecules and SiO2, and the bond formation process is exothermic (heat is released).

Thus, Delta H < 0.

The water molecules become immobilized on the surface when adsorption occurs, thus, entropy/disorder decreases.

So, Delta S < 0.

8 0

3 years ago

Can someone answer these questions for me please?

Monica [59]

Answer:

wowits too long

Explanation:

5 0

4 years ago

38 points!! >:D

Sav [38]

Answer: which*

Explanation:

8 0

3 years ago

Read 2 more answers