Use this diagram to answer the following
questions.
a
7 Identify Is this an atom or a molecule?
Explain your reasoning.

THIS IS ACTUALLY SCIENCE NOT CHEMISTRY

Answer:

Explanation:

Building bricks deteriorate overtime due to chemical weathering from moisture constantly in contact with it overtime, as well temperature changes. Their topmost layers leach after continuous attack, and are eroded. thereby causing them to break away most times.

This cycle takes place overtime and is not a quick action.

I hope this is easy to understand.

Answer:

false

Explanation:

when molecules move they heat up

Answer:

3291.84 cm

Explanation:

you would multiply the amount of yards you have by 91.44, since that's how many centimeters there are in 1 yd.

Answer: it’s D

Explanation:

Answer:

calcium chloride oxide

Answer:

He did not multiply the chlorine and oxygen atoms by the coefficient 4

Explanation:

I just took the quiz

Answer:

The matter has changed size, shape, or form.

Explanation:

A new substance that is formed is creation.

if the matter changed from one substance to another this is called a chemical reaction.

Surely not. It won't change the molecular level.

Hope that helps.

Answer:

That's a right Triangle

Explanation:

algebra.com

Answer:

scalene triangle

Explanation:

Scalene triangles don't have any equal side lengths.

Answer:

A; radiation

Explanation:

also, please dont use brainly to copy and paste every answer to get them right, use it when u need help

The number of molecules : 4.967 x 10²⁴

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

8.25 moles of C₈H₁₈

The number of molecules :

[tex]\tt 8.25\times 6.02\times 10^{23}=4.967\times 10^{24}[/tex]

Answer: B. Bohr and  D. Rutherford

Answer:

A chemical reaction produced a new substance.

Explanation:

I just answered this on the study island quiz.

Answer:

A chemical reaction produced a new substance or "A"

Explanation:

Answer:

they will die because they need to be in salt water

The limiting reagent : NH₃

A method that can be used to find limiting reactants is to divide the number of moles of known substances by their respective coefficients, and small or exhausted reactants become a limiting reactant

Reaction

4NH₃(g)+5O₂(g)⇒4NO(g)+6H₂O(g)

mol NH₃ :

[tex]\tt \dfrac{4.5}{17}=0.265[/tex]

mol O₂ :

[tex]\tt \dfrac{15.8}{32}=0.494[/tex]

mol ratio

NH₃ :

[tex]\tt \dfrac{0.265}{4}=0.06625[/tex]

O₂ :

[tex]\tt \dfrac{0.494}{5}=0.0988[/tex]

Limiting reactants : NH₃ (smaller ratio)

The limiting reagent when a 4.50 g sample of ammonia is mixed with 15.80 g of oxygen is NH₃

The limiting reactant refers to the reactant that gets consumed first in a chemical reaction and thus it limits how much product can be created or developed. A method that can be used to determine limiting reactants that to divide the number of moles by their respective coefficients.

So,

For mol NH₃ :

[tex]= 4.5\div 17[/tex]

= 0.494

For mol O₂ :

[tex]= 15.8 \div 32[/tex]

= 0.494

For mol ratio

NH₃ :

[tex]= 0.265 \div 4[/tex]

= 0.06625

O₂ :

[tex]= 0.494 \div 5[/tex]

= 0.0988

Based on the above calculations we can say that it is NH₃

learn more about the oxygen here: https://brainly.com/question/19803828

Answer:

24 is the answer of this question

Answer: particle in gas have more energy than the particles in a liquid

Explanation: this is because the amount of energy is directly proportional to how random the system is. gaseous molecules are in a more constant random motion than the liquid molecules

Answer:

n = 24 waves

Explanation:

As, the sound is produced with a steady pitch. Therefore, it means that there is no change in the pitch with respect to time. Hence, we can work with the following formula for frequency:

υ = n/t

where,

υ = frequency of sound wave = 6 waves/s

n = no. of waves = ?

t = time interval = 4 s

Therefore, using these values in the equation we get:

6 waves/s = n/4 s

n = (6 waves/s)(4 s)

n = 24 waves

Answer:

1. Chemical reactions

2.Substances

3. Properties

4. Precipitate

5. Light

6. Temperature

7. Color

8. Gas

Explanation:

During chemical reactions, new substances that possess new properties are formed. During the process of chemical reactions, evidences are found. Some of the evidences are formation of precipitate or light gel, production of gases and changes in colour and temperature.

Chemical reactions start with the substances or compounds which are known as reactants. The reactants react to form new substances known as the products which possess new properties.

Answer:

the partial of colloidal are smaller and they are not heavy whereas the partial of suspension are larger but they are heavy and less movement thus they settle down due to gravity

Answer:

I think its false

Explanation:

Any energy is important

Hope this helps <3

Answer:

In any study of energy, energy conversion is not important.  Heat energy that is lost cannot usually be used to produce work.

Explanation:

Hope this helps!

If so, please mark BRAINLIST!!

thx

Answer:

La velocidad inicial es 55 [tex]\frac{m}{s}[/tex]y su aceleración es -10 [tex]\frac{m}{s^{2} }[/tex]

Explanation:

Un movimiento es rectilíneo uniformemente variado, cuando la trayectoria del móvil es una línea recta y su velocidad  varia la misma cantidad en cada unidad de tiempo . Dicho de otra manera, este movimiento se caracteriza por una trayectoria que es una línea recta y la velocidad cambia su módulo de manera uniforme: aumenta o disminuye en la misma cantidad por cada unidad de tiempo. Y la aceleración es constante y no nula (diferente de cero).

En este caso la posición del objeto esta dada por la expresión:

[tex]x=x0+v0*t+\frac{1}{2} *a*t^{2}[/tex]

donde x es la posición del cuerpo en un instante dado, x0 la posición en el instante inicial, v0 la velocidad inicial y a la aceleración.

En este caso, por un lado podes considerar:

Reemplazando obtenes:

[tex]90=v0*2+\frac{1}{2} *a*2^{2}[/tex]

[tex]90=v0*2+\frac{1}{2} *a*4[/tex]

[tex]90=v0*2+2*a[/tex]

Y por otro lado tenes:

Reemplazando obtenes:

[tex]120=v0*3+\frac{1}{2} *a*3^{2}[/tex]

[tex]120=v0*3+\frac{1}{2} *a*9[/tex]

[tex]120=v0*3+\frac{9}{2} *a[/tex]

Por lo que tenes el siguiente sistema de ecuaciones:

[tex]\left \{ {{2*v0+2*a=90} \atop {3*v0+\frac{9}{2} *a=120}} \right.[/tex]

Resolviendo por el método de sustitución, que consiste en aislar en una ecuación una de las dos incógnitas para sustituirla en la otra ecuación, obtenes:

Despejando v0 de la primera ecuación:

[tex]v0= \frac{90-2*a}{2}[/tex]

Reemplazando en la segunda ecuación:

[tex]120=\frac{90-2*a}{2} *3+\frac{9}{2} *a[/tex]

Resolviendo:

[tex]120=(90-2*a)*\frac{3}{2} +\frac{9}{2} *a[/tex]

[tex]120=135-3*a +\frac{9}{2} *a[/tex]

[tex]120-135=-3*a +\frac{9}{2} *a[/tex]

[tex]-15=\frac{3}{2} *a[/tex]

[tex]\frac{-15}{\frac{3}{2} } =a[/tex]

-10=a

Reemplazando el valor de a en la expresión despejada anteriormente obtenes:

[tex]v0= \frac{90-2*(-10)}{2}[/tex]

Resolviendo:

[tex]v0= \frac{90+20}{2}[/tex]

[tex]v0= \frac{110}{2}[/tex]

v0=55

La velocidad inicial es 55 [tex]\frac{m}{s}[/tex]y su aceleración es -10 [tex]\frac{m}{s^{2} }[/tex]

Answer:

Flammability and oxidation of copper are both chemical properties of a substance.Chemical properties are the properties that tells us how a substance can react with others.Flammability, oxidation of copper, rusting of iron, precipitation e.t.c are chemical properties of a substance.Flammability is one important chemical property of hydrocarbons.Oxidation reaction is peculiar to copper.

Explanation:

Answer:

induced-dipole induced dipole forces.

Explanation:

Answer:

All the above

Explanation:

All the above

Answer:

The value of Equilibrium constant for the given reaction is 0.089

Explanation:

The given data shows the following reaction

    H2O (g)  + Cl2O (g) ⇄ 2 HClO (g)

The above reaction is in equilibrium.

Equilibrium constant K  = [tex]\frac{[C]^c*[D]^d}{[A]^a*[B]^b}[/tex]

for the reaction

aA+bB ⇆ cC +dD

so

K  = [tex]\frac{[HClO]^2}{[H2O][Cl2O]}[/tex]

    = [tex]\frac{[0.023]^2}{[0.077][0.077]}[/tex] = 23*23/77*77 = 0.089

Therefore the value of Equilibrium constant for the given reaction is 0.089

Answer:

The value of Equilibrium constant for the given reaction is 0.089

Answer: Ionic

Explanation: It is a type of chemical bond that generates two oppositely charged ions.

Answer

There is nothing like viscosity in solid because most of the solids usually have a rigid body. This is due to strong intermolecular forces. And it is due to this strong force between the molecules that they are unable to move and they remain fixed at their position. Some solids such as graphite which have layered structure, don't possess the property of viscosity, because of the strong force between the layers.

Explanation:

Viscosity is the property of a fluid that opposes the relative motion between two surfaces of the fluid that are moving at different velocities. In simple terms, viscosity means friction between the molecules of fluid.

FOR EXAMPLE

water is "thin", having a low viscosity, while vegetable oil is "thick" having a high viscosity

Answer:

Gallium, Phosphorus, Chlorine, Fluorine

Explanation:

Arrange the elements in order of increasing ionization energy. Use the periodic table to identify their positions on the table.

Drag each tile to the correct box.

Tiles

chlorinefluorinegalliumphosphorus

Sequence

Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.

For neutral atoms, ionization energy is positive, indicating that ionization is indeed an endothermic process. The higher the ionization energy of an atom, roughly speaking, the nearer the outer electrons are to nucleus. The element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.

Therefore, the element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.

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Answer:

The plant would be insect-resistant and improve its chances of success.

Explanation:

Answer:

Covalent

Explanation:

In the carbon tetrachloride molecule, four chlorine atoms are positioned symmetrically as corners in a tetrahedral configuration joined to a central carbon atom by single covalent bonds

Answer:

Carbon tetrachloride (CCl4) is ✔ covalent.

Answers to assignment question:

What properties would you expect for CCl4? Select all that apply.

It is likely a gas or liquid at room temperature.

It is likely soluble in water.

It will likely light up a bulb in a conductivity apparatus.

It will likely have a high melting point.

Calcium oxide (CaO) is ✔ ionic.

What properties would you expect for CaO? Select all that apply.

It is likely a gas or liquid at room temperature.

It is likely soluble in water.

It will likely light up a bulb in a conductivity apparatus.

It will likely have a high melting point.

Explanation:

all correct on edge! :D

Answer:

5 x 10 x 3200 = 170 000J or 170kJ

Explanation:

i searched it lol

The energy needed to raise the temperature of a 5 kg block of concrete by 10° C is 170 000J or 170kJ.

Energy is defined as a quantitative property that is transferred to a body or to a physical system. It can also be defined as capacity of doing work.

There are basically five forms of energy

Heat energy = mass x heat capacity x raise in temperature

                     = 5 x 3200 x 10

                     = 170000 J or 170 kJ

Thus, the energy needed to raise the temperature of a 5 kg block of concrete by 10° C is 170 000J or 170kJ.

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