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Murrr4er [49]
3 years ago
7

Earthquakes cause other natural disasters, such as the disaster in this photo from a major earthquake that hit Alaska in 1964. W

hat happened?
Chemistry
1 answer:
Mashcka [7]3 years ago
3 0

On March 27, 1964, Southeastern Alaska experienced a magnitude 9.2 earthquake. The earthquake caused a major tectonic tsunami, which hit the Southeastern coast of Alaska, the Pacific Coast of British Columbia, and the west coast of the United States. During the earthquake, there were also large landslides and submarine slumps.

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How do you solve for x?​
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Answer:

substitution is the best method or collecting like terms

Explanation:

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3 years ago
Which of the following statements is true? A) This reaction will be spontaneous only at high temperatures. B) This reaction will
viktelen [127]

Answer:

D) This reaction will be nonspontaneous only at high temperatures.

Explanation:

According the equation of Gibb's free energy -

∆G = ∆H -T∆S

∆G = is the change in gibb's free energy

∆H = is the change in enthalpy

T = temperature

∆S = is the change in entropy .

And , the sign of the  ΔG , determines whether the reaction is Spontaneous or non Spontaneous or at equilibrium ,

i.e. ,

if

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  • ΔG > 0 , the reaction is non Spontaneous
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The reaction has the value for ∆H = negative , and ∆S = negative ,

Now ,

∆G = ∆H -T∆S

     = ( - ∆H ) - T( - ∆S )

     =  ( - ∆H ) +T(  ∆S )

Now, for making the reaction Spontaneous ΔG = negative ,

Hence ,

The temperature is low, then the value for  ΔG will be negative , i.e. , Spontaneous reaction .

And , vice versa , at higher temperature , the reaction will have ΔG positive , and the reaction will be non -Spontaneous reaction .

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Hence , Al(s) will have ΔG = 0 .

7 0
3 years ago
The mass of a solid substance is 21.112 g. If the volume of the solid substance is 19.5 cm3, calculate the density of the substa
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Answer:

ρ = 1.08 g/cm³

Explanation:

Step 1: Given data

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Volume of the substance (V): 19.5 cm³

Step 2: Calculate the density of the substance

The density (ρ) of a substance is equal to its mass divided by its volume.

ρ = m / V

ρ = 21.112 g / 19.5 cm³

ρ = 1.08 g/cm³

The density of the substance is 1.08 g/cm³.

6 0
3 years ago
The half life of plutonium-239 (239pu, pu-239) is 24,100 years. How much plutonium will remain after 1000 years if the initial a
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The mass of plutonium that will remain after 1000 years if the initial amount is 5 g when the half life of plutonium-239 (239pu, pu-239) is 24,100 years is 2.5 g

The equation is Mr=Mi(1/2)^n

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Mr is the mass remaining after n half lives

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To find n, the number of half-lives, divide the total time 1000 by the time of the half-life(24,100)

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The mass remaining is 2.5 g

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Learn more about half life at:

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What is the type of potential energy that develops as the object changes shape
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