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3 years ago

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Chemistry

1 answer:

kipiarov [429]3 years ago

3 0

Answer:

Change in plate tectonic leads to change in earth surfaces.

Plate tectonics have changed Earth’s surface over time because the earth surface is placed on these plate tectonics. Earth's outer surface is divided into various plates that slowly move over the mantle which changes Earth's surface over time by merging and separating of landmasses that turn into continents.

The movement of tectonic plates is responsible for the creation of landforms such as volcanoes and ridges. Some volcanoes are formed when the tectonic plates pull apart from one another whereas some volcanoes are produced when a tectonic plate slides over one another so we can conclude that change in plate tectonic leads to change in earth land forms.

Explanation:

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if you take 2.0mL of a 7.0 ppm NaOH solution and dilute it to 250.0mL, calculate the final concentration in ppm.

Oduvanchick [21]

Answer:

C₂ = 0.056 ppm

Explanation:

Given data:

Initial volume = 2.0 mL

Initial concentration = 7.0 ppm

Final volume = 250.0 mL

Final concentration = ?

Solution:

Formula:

C₁V₁ = C₂V₂

C₁ = Initial concentration

V₁ = Initial volume

C₂ = Final concentration

V₂ = Final volume

Now we will put the values in formula.

C₁V₁ = C₂V₂

7.0 ppm × 2.0 mL = C₂ × 250.0 mL

C₂ = 14.0 ppm.mL /250.0 mL

C₂ = 0.056 ppm

4 0

3 years ago

monatomic ion with a charge of +2 has an electronic configuration of 1s22s22p63s23p6. This ion is a(n) . What is the chemical sy

Debora [2.8K]

Answer: The ion is $Ca^{2+}$ . The chemical symbol of the noble gas this ion is isoelectronic with Kr.

Explanation:

The given electronic configuration is,

$M^{2+}:1s^22s^22p^63s^23p^6$

The number of electrons = 2 + 2 + 6 + 2 + 6 = 18 electrons

As the ion has a charge of +2 , that means it has lost two electrons so the the neutral element will have 2 more electrons i.e 18+2 = 20. The element has atomic number of 20 and the element will be Calcium with electronic configuration of

$M: 1s^22s^22p^63s^23p^64s^2$

Thus the symbol of ion is $Ca^{2+}$ . the nearest noble gas with 18 electrons is Krypton with symbol Kr.

3 0

4 years ago

Energy is just like any other chemical or physical process, where it cannot be created or destroyed. Which Law states this fact?

Ganezh [65]

Answer:

Law of Conservation of Energy

Explanation:

5 0

4 years ago

Which of the following is a chemical property of vinegar? A. The pH of vinegar is around 2.4. B. Vinegar freezes at around 2°C.

vladimir2022 [97]

I think the correct answer from the choices listed above is option A. The chemical property of a vinegar is that the <span>pH of vinegar is around 2.4. It tells something about the concentration of hydrogen ions in the solution. The other choices given only describe the physical properties of the substance.</span>

5 0

3 years ago

Which substance is an inorganic compound?<br> A) water<br> B) glucose<br> C) protein<br> D) DNA

Ganezh [65]

Water is an inorganic compound.

<h3>What is an Inorganic compound?</h3>

An inorganic compound are those which don't possess carbon atom in it.

On the other hand, organic compound possesses carbon atoms which are

linked to other elements.

Examples of organic compounds include the following:

Glucose

Protein

DNA etc.

Water comprises of Hydrogen and Oxygen atoms thereby making it an

inorganic compound.

Read more about Inorganic compound here brainly.com/question/2169750

6 0

3 years ago

Read 2 more answers