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Rasek [7]
3 years ago
15

I WILL GIVE BRAINLIEST PLZ HELP ASAP thanks!!

Chemistry
1 answer:
Andreas93 [3]3 years ago
6 0

Pacific Ocean, convergent; Atlantic Ocean, divergent

The present is the key to the past.

Explanation:

Question 1

The plate boundaries that can be inferred from the shrinking Pacific and expanding Atlantic ocean are convergent and divergent respectively.

The pacific ocean is made up of a convergent margin.

The Atlantic is a divergent margin.

  • A convergent margin is a destructive margin where two plates comes in contact with one another.
  • A divergent margin is a constructive margin where two plates are moving away and allowing new materials to come up to the surface.

This is why the Pacific ocean is shrinking and the Atlantic is expanding

learn more:

Sea floor spreading brainly.com/question/9912731

Descending lithosphere brainly.com/question/9582362

Question 2

The principle of Uniformatrianism tells us that the present is the key to the past.

It was proposed by Sir James Hutton, a Scottish Geologist in the around the Scotland mountains.

Although the principle is now refined to the principle of Actualism, it still holds a lot of fundamental weight in solving geological problems.

  • It states that "the present is the key to the past and all geologic process that are happening today have occurred in the times past".
  • This principle helped revolutionizing the perception about geologic events.
  • Before his theory, the principle of catastrophism was in play.
  • The school of though of this principle is that all events occurred rapidly and catastrophically like a volcanic eruption.

learn more:

Sedimentary rocks brainly.com/question/9131992

#learnwithBrainly

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What is the answer??????? will mark brainliestt!!!!!!!!!!!!
olasank [31]

Answer:

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Explanation: The heat of the water rapidly speed up the process

6 0
3 years ago
Read 2 more answers
El aguacate al oxidarse, ¿que fenómeno es?, ¿físico, químico o alotropicos?​
devlian [24]

Explanation:

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3 0
3 years ago
The solubility of lead(II) iodide is 0.064 g/100 mL at 20ºC. What is the solubility product for lead(II) iodide?
quester [9]

Answer:

Ksp=1.07x10^{-8}

Explanation:

Hello,

In this case, the dissociation reaction is:

PbI_2(s)\rightleftharpoons Pb^{2+}(aq)+2I^-(aq)

For which the equilibrium expression is:

Ksp=[Pb^{2+}][I^-]^2

Thus, since the saturated solution is 0.064g/100 mL at 20 °C we need to compute the molar solubility by using its molar mass (461.2 g/mol)

Molar solubility=\frac{0.064g}{100mL}*\frac{1000mL}{1L}*\frac{1mol}{461.2g}=1.39x10^{-3}M

In such a way, since the mole ratio between lead (II) iodide to lead (II) and iodide ions is 1:1 and 1:2 respectively, the concentration of each ion turns out:

[Pb^{2+}]=1.39x10^{-3}M

[I^-]=1.39x10^{-3}M*2=2.78x10^{-3}M

Thereby, the solubility product results:

Ksp=(1.39x10^{-3}M)(2.78x10^{-3}M)^2\\\\Ksp=1.07x10^{-8}

Regards.

6 0
4 years ago
Who know the answer
bekas [8.4K]

First, let's explain the variables. F means force, m means mass, and a means acceleration. F is measured in Newotns [N], mass is measured in kilograms [kg], and acceleration in measured in meters per squared second [m/s²].

Now let's mover on the first problem.

Given

m = 1000 kg

a = 3 m/s²

According to the second law of Newton, the force is equal to the acceleration multiplied by the mass.

F = am\\F = 3 * 1000\\F = 3000 N

The answer is 3000 N.

The second problem is smiliar.

Given

m = 70 kg

F = 250 N

We use the same formula from before, and use a bit of algebra to adapat it to our needs.

F = ma\\\frac{F}{m} = a\\a = \frac{F}{m}\\a = \frac{250}{70} \\a = 24\frac{1}{7} m/s^{2}

The answer is 24 1/7 s/m^2.

6 0
4 years ago
Plz help thank you!!!
Furkat [3]

Answer:

1. Covalent Bond

2. Ionic Bond

Explanation:

Covalent bonds are defined as the bond in which sharing of electrons takes place between atoms. The sharing of electrons is in equal number so that it form a stable balance of attraction and repulsion between atoms. In the given example of CO2 (first image) oxygen is sharing equal number of electrons with carbon to form a stable bond called covalent bond.

Ionic bonds are formed when valence electrons are transferred to other atoms and form oppositely charged ions. In ionic bond formation, the atoms that gain electrons become negatively charged and the atoms that loses electrons become positively charged. In the given example of Ca Cl2, Ca is also giving its 2 valence electrons to each Cl and there is no stable balance of attraction and repulsion between atoms.

Hence, the correct answer is:

1. Covalent Bond

2. Ionic Bond

6 0
3 years ago
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