Please help me if your good with science:).


What is the speed of the train?
A.)1200km/h

B.)4 km/h

C.)75 km/h

D.)300 km/h

Answer:

1. liquid, gas, and solid

2. Liquid, solid, and gas particles are different by volume, and shapes they take in containers. Solid is tightly packed, liquid takes the shape of anything, and gas has neither volume or shape

Explanation:

Hope this helps!

Answer:

Nickel is silvery-white, hard, malleable, and ductile metal.

It is a good conductor of heat and electricity.

It is bivalent, that is it has a valency of two.

The metal dissolves slowly in dilute acids.

Explanation:

Answer:

Atomic number: 28

Atomic mass: 58.71 g.mol

Melting point: 1453°C

Explanation:

I answered based off what i understood lol. I dunno if this is what you meant but here you go ig

Answer:

Graphite is an electrical conductor, hence useful in such applications as arc lamp electrodes. It can conduct electricity due to the vast electron delocalization within the carbon layers (a phenomenon called aromaticity). These valence electrons are free to move, so are able to conduct electricity.

Explanation:

Graphite is used for electrodes because

The atomic structure of graphite results in a large number of electrons not being bonded, allowing them to migrate between the layers of graphite. It is this large number of free electrons (electron delocalization) that give graphite its excellent conductive properties. As well as being a good conductor, graphite is also cheap, robust and easily accessible.

Answer: The answer is D

Explanation:Covalent bonds are formed when atoms share one or more electrons. Ionic bonds are formed when one atom transfers electrons to another atom. how are bond energy and bond strength related? Please give me Brainliest

When two atoms share six electrons with one another, the type of bond do they form is: D. a triple covalent bond.

A covalent bond can be defined as a bond that exists in chemical compounds and it typically involves the sharing of electrons between the atoms of a non-metallic chemical element.

In Chemistry, there are three (3) main types of covalent bond and these include:

A triple covalent bond is a type of covalent bond that is formed when the two (2) atoms of a non-metallic chemical element share six electrons with one another instead of the usual two in a single covalent bond.

In conclusion, a triple covalent bond is usually stronger than the equivalent single covalent bond and double covalent bond.

Read more on covalent bond here: brainly.com/question/10429880

Answer:

a. no 2 7 4 6

b. yes

c. no 3 2 6 1

d. no 2 1 2

a. 1 2 2 1

b. 3 1 3 2

c. 1 5 2

d. 1 1 2

Answer:

C

Explanation:

Bc Look at it like this if norm and grav are equal aka the reason why hes not going threw the cement or flying in the air then the app and the fric are equal too or he would slip and fall

Answer:

5455.859420000001 Neon Gas

Explanation:

Answer:

10.88 moles of magnesium hydroxide contain 65.52 ×10²³formula units

Explanation:

Given data:

Number of formula units of magnesium hydroxide = ?

Number of moles = 10.88 mol

Solution:

The given problem will be solve by using Avogadro number.

The number 6.022×10²³ is called Avogadro number.

1 mole contain  6.022×10²³ formula units.

10.88 mol × 6.022×10²³formula units  /1 mol

65.52 ×10²³formula units

Thus, 10.88 moles of magnesium hydroxide contain 65.52 ×10²³formula units .

Answer:

9.14moles

Explanation:

Given parameters:

Number of atoms of butane  = 5.5 x 10²⁴atoms

Unknown:

Number of moles  = ?

Solution:

To solve this problem, we must understand that a mole of any substance contains the Avogadro's number of particles.

             6.02 x 10²³ atoms makes up 1 mole of an atom

             5.5 x 10²⁴ atoms will contain = [tex]\frac{5.5 x 10^{24} }{6.02 x 10^{23} }[/tex]  = 9.14moles

Answer:

gas

Explanation:

because gas is compressible and has a lot of free space between particles

Answer:

A

Explanation:

The area that represents the least dense part of the geosphere is the portion or region A.

Density is the determined by the packing of a layer.

Answer:

the answer is A

Explanation:

a P e x

Answer:

D. is strong due to the independence of the ions

Explanation:

In an ionic solid, the ions are packed together into a repeating array called a crystal lattice.

The crystal lattice structure of an ionic compound is strong due to the interactions of the ions. Therefore, option (C) is correct.

Ionic compounds can be defined as crystalline solids which are formed by closely packing ions of opposite charge due to the interactions of the ions. An Ionic compound is usually created when metal reacts with non-metal.

In ionic compounds, the ions are held together by ionic bonds due to the interactions of the ions. The ions are formed from atoms by gaining or losing electrons in order to attain their noble gas configuration.

A cation in ionic compounds refers to an electropositive ion and has the tendency to donate valence electrons. Similarly, anions in ionic compounds can be defined as electronegative ions and have a tendency to accept electrons.

In an ionic compound, there exists a large electrostatic force of attraction that forms a strong ionic bond.

Learn more about ionic compounds, here:

brainly.com/question/17217225

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Answer:

Magnesium ion

Explanation:

The name of the ion formed from an atom with 12 protons is magnesium ion.

 The formula of the ion is given as:

           Mg²⁺

We know this because the number of protons an atom contains can be used to identify an element.

Element with atomic number or proton number of 12 is magnesium .

 when it loses two electrons, it becomes isoelectronic with Neon and it is now stable.

Answer:  Mercury!!!!!!

Explanation:

Highs and lows. Orbiting between 28 and 43 million miles (46 and 70 million kilometers) from the sun, Mercury, also the smallest planet, feels the brunt of the solar rays. According to NASA, the tiny world suffers the most extreme temperature range of any other planet in the solar system.

Have great day!

Answer:

Mercury

Explanation:

Highs and lows. Orbiting between 28 and 43 million miles (46 and 70 million kilometers) from the sun, Mercury, also the smallest planet, feels the brunt of the solar rays.

Answer:

Lithosphere, asthenosphere , lower mantle

Explanation:

took on edge 2021!

Answer:

what are the answer choices

Explanation:

Answer:

3x

Explanation:

Answer:

Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago.

a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle

Answer:

C. Potential energy decreases and kinetic energy remains the same.

Explanation:

Answer:

i think b or c

Explanation:

Answer:

the two atoms will combine and release energy

Answer:

I can't do that but this is the best I can do for you :(

Explanation:

Nitric acid, HNO3(aq), breaks up into ions (a cation and an anion) in a water solution.

Answer:

10

Explanation:

10 ELECTRONS ARE IN

Na+

Answer:

I believe that the answer is glucose?

Explanation:

if not, tell me the answer choices and i will help u from there

Answer:

a dissolved substance especially or a component of a solution present in smaller amount than the solvent

Explanation:

have a good day

Answer:

A solute is a minor component in a solution, this is dissolved in the solvent.

Explanation: