Please help anyone??

Answer:

B: Magma

Explanation:

technically magma is the name for the hot molten rock (mixed with gases and mineral crystals) that collects in chambers beneath the Earth's crust.

The crust has been the upper layer of the earth's geosphere. It has been characterized by the presence of melted rocks and minerals that are called magma. Thus, option A is correct.

Magma has been defined as the hot semi-liquid president beneath the earth's surface in the crust layer. It has a very high temperature and is known to have many metals and minerals dissolved in it. The magma comprises metals minerals, dissolved gases, etc.

When the magma from the magma chambers flows outwards on the earth's surface then it is called lava. This lava on cooling produces igneous rocks. This event of magma explosion and lava formation along with other gases from a mountainous surface is called volcanic eruption.

Therefore, option A. melted rock and minerals in Earth's crust is called magma.

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Answer:

4.8 x 10^1

Explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved t the right, exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Answer:

Chem Reaction

Explanation:

Cuz it big brain time

The iron in the metal changed to rust, which is a chemical reaction. Therefore, option (C) is correct.

The rusting of iron is an oxidation reaction in which the iron combines with oxygen in the air in the presence of water to produce Fe₂O₃.xH₂O, a hydrated iron (III) oxide.

This hydrated iron (Ill) oxide is rust and the color of rust is reddish-brown. This reddish-brown rust can be seen on iron nails, pipes, and railings. on. Rust is formed when the iron is exposed to oxygen in the presence of moisture and is not an instantaneous reaction. Rusting of iron takes place over a long period of time.

Fe (s)  +  O₂ (g)  + xH₂O (l) →   Fe₂O₃. xH₂O (s)

The oxidation state of iron increases which is followed by the loss of electrons as a result of the rusting reaction. Iron(III) oxide or ferric oxide has the iron atom has an oxidation state of +3.

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Answer:74

Explanation:

Answer:

I believe Tungsten has 2 valence electrons.

Explanation:

Hope this helps!

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

So we have

[tex]density = \frac{25}{90} = \frac{5}{18} \\ = 0.277777...[/tex]

We have the final answer as

Hope this helps you

Answer:

thermal

Explanation:

Answer:

thermal energy

Explanation:

because thermal energy produces heat

Answer:

Double replacement reactions

Explanation:

CD are two reactant compounds, while AB and CB are two product compounds that results from the reaction, in this type of reaction B and D change places

Answer:

A

Explanation:

we know that pangea was when all the continents were connected and the tectonic plates moved, causing pangea to split into multiple pieces. so north america was formed by moving tectonic plates.

i hope this helps :))

Answer:

the average atomic mass for element X is 28

Answer:

Diatomic molecules consist of two atoms that are chemically bonded. The two atoms can be the same or different chemical elements. As for whether or not they are compounds, there is not technically an answer. This is because all compounds are molecules, but not all molecules are compounds. For example diatomic molecules that comprise the chemical compounds nitric acid, carbon monoxide, and hydrogen chloride are made up of two different elements.  As you can see, most diatomic molecules are not made up of the same kind of elements and not every diatomic molecule comprises a chemical compound.

hope this helps :)

Explanation:

The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms

4 steps of Carbon Cycle

Photosynthesis, Decomposition, Respiration and Combustion.

Answer:

vector

Explanation:

Answer:

b, c and d (last three options)

Explanation:

It can't be the first one because:

On the left hand side there is one of everything and then on the right, ther is one zinc, two chloride and 2 hydrogen atoms. It is unbalanced

Second one:

there are 8 carbons on both sides, 20 hydrogens on both sides and 26 oxygen on both sides. It is balanced

Third

1 copper on both sides, 2 hydrogens on both sides and 1 oxygen on both sides. It is balanced

Fourth

4 silver on both sides and 2 oxygens on both sides

The answer is A Height and Mass

Gravitational potential energy depends on the strength of gravity; A. height and mass of the object.

Gravitational potential energy (G.P.E) can be defined as the energy possessed by a physical object or body due to its position (height) above planet Earth.  

Hence, gravitational potential energy (G.P.E) is highly dependent on mass, height of an object or body and the acceleration due to gravity.

Mathematically, gravitational potential energy (G.P.E) is given by the formula;

[tex]GPE = mgh[/tex]

Where:

In conclusion, the three (3) main factors that gravitational potential energy (G.P.E) depends on are:

I. Strength of gravity.

II. Height.

III. Mass.

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Answer:

Oxygen has an atomic number of 8 , and the mass number of an atom is the sum of its atomic number plus its neutron number. We got the mass as 16 units, and so it'll have 16−8=8 neutrons.

Explanation:

Answer:

Your ANSWER:

A.stir the hot cocoa

Explanation:

stirring helps particals dissolve faster

Answer:

Explanation: When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can only happen when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon. Hope this helps and u have a good day <3

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{20}{25} = \frac{4}{5} \\ [/tex]

We have the final answer as

Hope this helps you

Answer: 3

Explanation: I took the k12 quiz

Answer:

23 because the atomic number is base on protons and electrons and the neutrons is 20 hope it help

Answer:

2NaCl + 2H2O --> Cl2 + 2NaOH + H2

Explanation:

Answer:

Law of multiple proportions

Explanation:

The law which is illustrated with the data suggests the law of multiple proportion.

The combining elements are carbon and hydrogen;

Law of multiple proportions states that "if two element combine together to form tow or more different compounds, the masses of one of the elements which separately combine with a fixed mass of the other element are in a simple ratio".

 Let us prove the law of multiple proportion:

In A;

       C = 75%     H = 25%  =  3:1

   B;

        C = 85.7     H =14.3   = 6:1

  C;

         C = 92.3    H = 7.7    = 12:1

We see that both carbon and hydrogen have a fixed ratio.

The ans is A.

You need to refer back to the periodic table n find the 2 the is under the same grp.

Answer: its A

Explanation:

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question we have

mass = 10 × 2

We have the final answer as

Hope this helps you

Answer: 5 orbitals

Explanation:

Each d subshell has 5 orbitals, with 10 electrons. So it's like for every orbital, there are 2 electrons. Look at orbital diagrams (if your teacher made you draw them), and you will see that an arrow pointing both UP AND DOWN represent 2 electrons (arrow upward=1 electron, arrow downward=1 electron)

Here, we are required to determine how many orbitals does the d subshell have, and how many electrons can fit in the d subshell.

The d subshell is first recorded in the shell with energy level 3.

The orbitals in an atom are organized into different layers or electron shells. The d subshell has 5 orbitals in it.

This is evident from the formular; 2l + 1.

where l = 2 for the d subshell.

As with any sub-orbital, the sub-orbitals in the d-subshell also contain 2 electrons each.

According to Pauli's exclusion principle, the two electrons in each must have opposing spin.

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Answer:

I think B but I'm not sure.

Answer:

C.

Explanation: