describe las moléculas

Answer:

The spectra can be divided into two types viz., emission and absorption spectra. The differences between them are given below. 1) The emission spectrum is obtained due to emission of radiation from the substances. The absorption spectrum is obtained when the substance absorbs the radiation.

Explanation:

Answer:

Explanation:

Did u ever get the answer?

Answer:CnH2n+1OH → CnH2n + H2O

CH2OH-CH2OH → CH3CHO + H2O

CH2OH-CHOH-CH2OH → CH2=CH-CHO + 2H2O

ROH + ROH → ROR + H2O

ROH + R’OH → ROR’ + H2O

Explanation:

Answer:

The ice shrinks (decreases volume) and becomes more dense. The ice density will increase from . 92g/cm^3 to that of liquid water (1g/cm^3).

Explanation:

Answer:

Zinc

Explanation:

Answer:

Hydrogen Peroxide

Explanation:

Answer:

1. Li₂O → Lithium Oxide

2. MgF₂ → Magnesium Fluoride

3. For "ALS", I'm assuming you mean Al₂S₃ (Correct me if I'm wrong) → Aluminum Sulfide.

4. KN₃ (Again, assuming you mean KN₃, not "KN") → Potassium Azide

The cause that led to the increase in steel consumption seen in the graph is the increase in population.

In the graph, you can see the relationship between the millions of people and steel consumption and the centuries. The graph shows that population growth between 1700 and 1900 was minimal because it did not exceed 100 million people.

From 1900 onwards the population began to grow from 100 million to 600 million.

On the other hand, steel began to be exploited in the mid-1800s and until 1900 it had not exceeded 100 million tons. After 1900 it increased rapidly to 250 million tons and by the year 2000, it had already exceeded 700 tons.

According to the above, it can be inferred that the growth of steel consumption was influenced by the growth of the population.

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Answer:

Metalloid/Solid

Explanation:

The difference between the pressure in ideal and nonideal conditions for the CO₂ gas is 0.22 atm.

The given parameters;

The van der Waals equation is calculated as follows;

[tex](P + \frac{an^2}{V^2} )(V-nb) = nRT\\\\P = \frac{nRT}{V-nb} - \frac{an^2}{V^2} \\\\P = \frac{2\times 0.082057 \times 200}{7.3 \ -\ 2\times 0.0427} - \frac{3.59\times 2^2}{7.3^2} \\\\P = 4.281 \ atm[/tex]

The difference between the pressure in ideal and nonideal conditions for the CO₂ gas is calculated as;

[tex]\Delta P = P_{ideal} - P_{nonideal}\\\\\Delta P = 4.5 \ atm \ - \ 4.281 \ atm\\\\\Delta P = 0.22 \ atm[/tex]

Thus, the difference between the pressure in ideal and nonideal conditions for the CO₂ gas is 0.22 atm.

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Answer:

The H+ atoms will become neutralized by the OH- ions in the water. This is due to the fact that when acids are dissovled in water, they give H+ ions (Hydrogen ions). When the H+ ions from the acid join with the OH- ions in the base (water), they'll become neutralized and form H₂O (Water molecule).

Answer:

0.0111mol/L

Explanation:

M = n/V

We don't know n, but we know that n =mass/Molar mass, so:

n = 8.77g/166.0028 g/mol

n = 0.0528304342mol

M = n/V

M = 0.0528304342mol/ 4.75L

M = 0.111221967mol/L

Round to three sig figs if necessary: 0.0111mol/L

The molarity of the solution is 0.010M.

Molarity:

Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.

Given:

Mass=8.77g

Volume= 4.75 L

To find:

Molarity=?

Firstly we need to calculate the number of moles.

Molar mass of KI=  166 g/mol

Given mass= 8.77 g

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} \\\\\text{Number of moles}=\frac{8.77}{166}= 0.05 \text{mol}[/tex]

Now, substituting the values in molarity formula which is given as:

[tex]\text{Molarity}=\frac{n}{V} \\\\\text{Molarity}=\frac{0.05}{4.75} =0.010M[/tex]

Therefore, the molarity of the solution is 0.010M.

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Answer:

Clean the microscope after each use. ...

Handle glass slides carefully. ...

Turn off the light source when the microscope is not in use. ...

Be aware if your microscope has a mercury lamp. ...

When carrying the microscope, always use two hands with one hand supporting the base and theother hand holding the arm.

Explanation:

:)

Answer:

3.78 gm O2

Explanation:

In the reaction represented by the equation 2Al2O3 → 4A1 + 302, calculate the theoretical amount in grams of oxygen, O2 produced if 11.84 grams Al2O3 decomposes?

for every 2 moles of Al2O3, 3 mole of 02 are produced

molecular weight of Al2O3 =(2X27) + (3X32) =54+96= 150

11.84 gm Al2O3 = 11.84/150 moles =0.0789 moles

This will produce 3/2 X 0.0789 moles of O2 = 0.118 moles O2

mol wt of O2 is 32

0.118 moles weighs 0.118X32 = 3.78 gm O2

Answer:

Magnesium and Chlorine have a great difference in there electronegativies. Due to this, they will form an ionic bond. Magnesium has 2 valence electrons and chlorine has 7. Therefore, two magnesium atoms will give one electron to one chorine atom, making the chlorine atom stable.

The bonding activity of magnesium (mg) and chlorine (Cl) will lead to ionic bonding.

It should be noted that Magnesium and Chlorine have a great difference in their electronegative and this will lead to the formation of an ionic bond.

Magnesium has 2 valence electrons while chlorine has 7 valence electrons. In such a case, the two magnesium atoms will give one electron to one chlorine atom. This is vital for making the chlorine atom stable.

In conclusion, an ionic bond will be formed between them.

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Electromagnetic forces occur between electrons and protons while nuclear forces occur between neutrons and protons in the nucleus.

Electromagnetic forces are the forces that are responsible for the attraction between electrons and protons. The electrons in shells repel each other.

The existence of electromagnetic forces explain why positively charged protons repel each other in the nucleus and neutrons are needed to buffer this effect.

The electromagnetic force has a short range. The strong nuclear force applies to the nucleus and focuses on the neutron - proton ratio.

An atom is unstable if it has too many protons because their repulsive force will exceed the nuclear force that keeps them together. Nuclear force is stronger for lighter nuclei than heavier ones.

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Answer:

transparent

Explanation:

Answer:

yes

Explanation:

The strength of metallic bonds is dependent on the protons, delocalized electrons and ions.

The strength of a metallic bond is dependent on:

The strength of metallic bonds is dependent on the protons, delocalized electrons and ions.

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Answer:

Explanation:

Chloride is described as an extended structure because its atoms are arranged following an endless repeating pattern and are of distinct ratio

Crystals and polymers mostly form extended structures as seen in the formation of sodium chloride whereby the ions in the compound are arranged following a repeating pattern. ( i.e. has a giant ionic structure ).

Chloride is a considered an extended structure because in sodium chloride it forms an unending repeated pattern of ions which makes it a perfect example of an extended structure.

Hence we can conclude that Chloride can be described as an extended structure because its atoms are arranged following a repeating pattern and are of distinct ratio.

Crystal of Strontium chloride is described as an extended structure because it is arranged in a repeating pattern.

Crystals form extended structures means a group of atoms or molecules in a distinct ratio that are present in a repeating pattern. Crystals are made up of atoms of one element that grouped together or can be made up of molecules grouped together.

Due to repeating pattern and constant ratio of strontium chloride then it is considered as repeating structure so we can conclude that Crystal of Strontium chloride is considered as an extended structure due to its arrangement in a repeating pattern.

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Water combines with carbon dioxide to produce slightly acidic groundwater

that dissolves limestone and forms caves.

This is because the reaction between water and carbondioxide to form

bicarbonate ions( HCO₃⁻). The bicarbonate ions dissociate into Hydrogen

atoms thereby increasing the acidity.

The acidic environment results in the formation of acidic groundwater that

dissolves limestone and forms caves.

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Answer:

0.0036265350669622

Explanation:

Report if wrong

-Atlas-

        The nitrogen cycle is a repeating cycle of processes during which nitrogen moves through both living and non-living things: the atmosphere, soil, water, plants, animals and bacteria. In order to move through the different parts of the cycle, nitrogen must change forms. The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.

        Hope this helps, have a nice day! :)

Answer:

Sorry I can't

Explanation:

Answer:

a metal and a polyatomic anion

metal and a nonmetal

Answer:

A Metal and a Nonmetal

a Metal and a Polyatomic metal

Explanation:

Edge 2021

Answer:

super washing soda can I mix into them

Answer:

aluminum and silicon and the electronegative character of the oxygen.

Explanation:

.

The electronegative character of alumina and silica and the electropositive character of oxygen causes the stationary phase to be very polar.

Electronegativity is defined as the tendency for an atom of a given chemical element to attract shared electrons or electron density when forming a chemical bond.

Non metals are usually an electronegative elements.

Electro positivity is defined as the tendency for an element to lose the electron to form a positive ions.

It is also known as metallic character. Metals are usually an electropositive elements.

Thus, the electronegative character of alumina and silica and the electropositive character of oxygen causes the stationary phase to be very polar.

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is a protected artificial or natural lake that is used to store water for human use is known as an Reservoir .