Please help me answerrr

Answer:

The correct option of the first option

Explanation:

Dissolution of a solute in a solution is the process in which the solute interacts with the solvent leading to the disappearance of the solute to form a solution. Rate of dissolution is primarily affected by three factors namely

Stirring of the solution: Stirring the solution causes the solute to interact more with the solvent, thus increasing the rate of dissolution.

Surface area of the solute: The smaller the surface area of the solute, the more easier it is for it (the solute) to interact with the solvent. Hence, the smaller the surface area, the faster the rate of dissolution.

Temperature of the solvent: An increase in temperature of the solvent causes the generally causes more things to dissolve in this solvent due to increased energy of molecules in the solvent, which causes the molecules of the solute and solvent to interact more.

A decrease in the amount of solute will reduce the amount of interaction the solute (since it is in lesser quantity) have with the solvent hence the rate of dissolution will also be low (even though a solution will still be formed).

There are different factors that influences chemical equations.  The factor that causes a decrease in the rate of dissolution is decreasing the surface area of the solute.

Surface area is known to affect the rate of dissolution.  Note that When the total surface area of the solute particles is increased, the solute will then dissolves more quickly than ever.

The breaking of a solute into smaller pieces in turn do increases its surface area and increases its rate of solution and the act of stirring, do allows the solute to dissolve faster.

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Answer:

Aluminium.

Explanation:

The above electronic configuration can be written in a simplified form as shown below:

1s² 2s²2p⁶ 3s²3p¹

Next, we shall determine the number of electrons in the atom of the element as follow:

Number electron = 2 + 2 + 6 + 2 + 1

Number of electron = 13

Next, we shall determine the number of protons.

Since the element is in its neutral state,

The number of electrons and protons are equal i.e

Proton = Electron

Number of electron = 13

Proton = Electron = 13

Proton = 13

Next, we shall determine the atomic number of the element.

The atomic number of an element is simply the number of protons in the atom of the element i.e

Atomic number = proton number

Proton = 13

Atomic number = 13

Comparing the atomic number of the element with those in the periodic table, the element with the above electronic configuration is aluminium since no two elements have the same atomic number.

Answer:

The atoms share some of their outer electrons so that each atom has a stable noble gas arrangement.

Explanation:

Answer:

Neutrons have a neutral charge

Explanation:

A neutron consists of 3 quarks, 1 up and 2 down. The up quark has a charge of + 2/3e, and the down quarks each have a charge of - 1/3e. So, the charges on the 3 quarks tend to cancel out to produce a neutrally charged particle.

Explanation:

In the context, a vial which is used in store medical samples is filled with water at room temperature. And the vial is kept on a cold water. Also a water bag containing warm water is kept near the vial.

The cold water kept at the bottom of the vial is having lower kinetic energy while warm water will have higher kinetic energy than the others. Since the water in the vial is at room temperature and it is in touch with the cold blue water, the water in the vial will loose or give its temperature to the cold blue water through conduction as well as convection process since temperature always flows from a hot body towards the cold body.

On the other hand, the warm water placed next tot he vial will give its temperature to the atmosphere.  

The answer is 1.98 x 10^10 leaves.

18 mountains x 8800 trees = 158400 total trees

158400 total trees x 125000 leaves = 19800000000 total leaves in entire mountain range

Sci not: 1.98 x 10^10 leaves  

To do scientific notation, put the decimal place right after the first digit in the number and count how many places are behind the decimal. you'll write the number of places after the decimal after the ^ in the 10^.

Answer:

Sharing or covalent bonding is taking place.

Explanation:

The valence electron will be shared by both the atoms so that means that the election will move around both of the atoms.

Answer:

A) Cu

(copper)

Answer:

6cm

Explanation:

The volume of the block of wood of 360 grams has been 60 ml or 60 [tex]\rm cm^3[/tex].

The density of an object can be defined as the mass of an object per unit volume. Density plays a pivotal role in the object sinks or floats into a liquid.

If the density of an object is lighter than the density of the liquid, the object will float onto the liquid. If the density of an object is more than the density of the liquid, the object will sink in the liquid.

Density  can be given by:

Density = [tex]\rm \dfrac{mass}{volume}[/tex]

Mass of the object = 360 grams

Density = 60 g/[tex]\rm cm^3[/tex]

Volume = [tex]\rm \dfrac{mass}{density}[/tex]

Volume = [tex]\rm \dfrac{360}{60}[/tex]

Volume = 60 [tex]\rm cm^3[/tex] .

1 [tex]\rm cm^3[/tex] = 1 ml

Volume = 60 ml.

The volume of the block of wood of 360 grams has been 60 ml or 60 [tex]\rm cm^3[/tex].

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Answer:

hmmmm not sure and don't know

Explanation:

Answer:303.15

Explanation:

Answer:

THERMAL IMAGING

We can sense some infrared energy as heat. Some objects are so hot they also emit visible light—such as a fire does. Other objects, such as humans, are not as hot and only emit only infrared waves.

Answer:

Where is the results and what is the question or is there a picture

Explanation:

Answer:

The pollution can cause resources to lessen.

Due to pollution, resources like air and water considered to be at risk, even though they are considered renewable.

Pollution is the presence on an environment or substance, harmful substances that are dangerous to the living organisms found in that environment.

Water and air pollution is a serious risk to human, animal and plant life in the environment.

Therefore, due to pollution, resources like air and water considered to be at risk, even though they are considered renewable.

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Answer:

14mL

Explanation:

1mL = 1cm^3, 1000mm^3 = 1000cm^3

Answer:

The loops in Ptolemy’s ✔ geocentric model, and those shown on the video, are called

✔ retrograde motion. This phenomenon is caused by Earth’s

✔ faster orbit than those of other planets.

Explanation:

Answer:

✔ geocentric

✔ retrograde

✔ faster

Explanation:

Answer:

you have a bad memory?

Explanation:

Answer:

B. Chemical property

Explanation:

Answer:

B

Explanation:

a reaction has taken place in which you can't get back what you started with

Answer: Major radioactive elements (such as uranium) break down and create lead as one of ... Exposure to even small amounts of lead can be harmful since lead has no use in the body. ... of all industrial metals in the world because lead is easily re-melted and refined. ... Other metals that are found with zinc are silver and copper.

Explanation:

Answer:

Healthy kidneys clean your blood and remove extra fluid in the form of urine. They also make substances that keep your body healthy. Dialysis replaces some of these functions when your kidneys no longer work. There are two different types of dialysis - hemodialysis and peritoneal dialysis. The following is about hemodialysis.

Answer:

The density of the cube is 0.5g/mL. Hoped this helped! :)

Explanation:

V= 12.0mL                                                                D=M/V

M= 6.0g

D= 6.0g/12.0mL

D= 0.5g/mL

Answer:

Explanation:

Using stratified random sampling, researchers must identify characteristics, divide the population into strata, and proportionally choose individuals for the representative sample. ... For example, individuals who are too busy to participate will be under-represented in the representative sample.

Answer:

The CORRECT answer is Solution

Explanation:

Since a Colloid is a liquid like substance that cannot be removed from other solids the only possible choice would be a Solution. becuase with a solution you can drain the solution and still get the beans.

Answer:

Estos elementos se denominan metales de transición, metales pesados, elementos del bloque D, etc.

Explanation:

Aquí, en esta pregunta, queremos saber la razón por la cual hay un espacio de 10 elementos entre el calcio, que es un elemento del grupo dos, y el galio, que es un elemento del grupo 3.

Al observar la tabla periódica, la tabla periódica moderna, notamos un bloque de elementos entre los elementos del grupo 2 y los elementos del grupo 3 en la tabla periódica.

Entonces, ¿por qué se colocan estos elementos entre ambos grupos? Se colocan aquí porque no pertenecen en su totalidad al grupo 2, ni tampoco al grupo 3.

Estos elementos presentan una especie de estados de oxidación variables que son responsables de una amplia variedad de propiedades comunes entre ellos.

Answer:

Thomas Melvill

Explanation:

...

Answer:

Diesel and kerosene.

Hope it helps :)

Answer:

Gasoline

Diesel

Kerosene

LPG

Rethanol

Ethanol

Butanol

Answer:

when dealing with atoms man means man-made because man means man-made