Answer:
Option C
Explanation:
The answer to this question will be the third option "It is bendable." Malleable means to be able to change the shape of a object without damaging or breaking it. In this case a malleable solid would be for example drainage pipes. These pipes have curves and different shapes but still remain its product of a metal.
Hope this helps!
Final answer:
A malleable solid can be shaped under compression into thin sheets without breaking, a property typically found in metals, which also possess ductility, the ability to be drawn into wires.
Explanation:
If a solid is malleable, it means that it can be pounded into thin sheets or bent into shape without breaking. This property is commonly associated with metals, which are elements known for their ability to conduct electricity and heat, their shiny appearance, and their variable hardness and melting temperatures. At room temperature, metals are typically solid, with the well-known exception of mercury.
The ductility of a metal refers to its ability to be drawn into thin wires, and malleability refers to being shaped under compression, such as hammering or rolling into sheets. For instance, metals like copper are used in electrical wiring because they are both malleable and ductile; they don't break when being bent into the needed shapes and can be stretched into thin wires that conduct electricity efficiently.
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Why would you expect strontium to be chemically more similar to calcium?
They are in the same family/group.
They are in the same period.
They have the same atomic number.
They have the same atomic mass.
Answer:
They are in same group/family.
Explanation:
Alkaline earth metals are present in group 2 of periodic table. There are six elements in second group. Beryllium, magnesium, calcium, strontium, barium and radium.
All have two valance electrons but in different energy levels. Thus they have similar chemical properties.
Electronic configuration of calcium.
Ca = [Ar] 4s²
Electronic configuration of strontium.
Sr = [Kr] 5s²
They are present in group two and have same number of valance electrons (two valance electrons) and show oxidation state +2 by loosing two valance electrons. They also show similar reactivity.
They react with oxygen and form oxide.
2Sr + O₂ → 2SrO
2Ca + O₂ → 2CaO
this oxide form hydroxide when react with water,
SrO + H₂O → Sr(OH)₂
CaO + H₂O → Ca(OH)₂
With sulfur,
Sr + S → SrS
Ca + S → CaS
Which of the following is an example of a mixture?
A.
the atmosphere
B. water
C.
calcium
D.
carbon dioxide
Answer:
The atmosphere
Explanation:
study island
1. Ethene, C2H4, burns in oxygen according to the equation. In an experiment, 10cm3 of ethene was burnt in 50cm3 of oxygen.
C2H4 + 3O2 = 2CO2 + 2H2O
i) Calculate the volume of the oxygen gas remaining at the end of the reaction.
ii) Calculate the volume of carbon dioxide produced.
2. What volume(in cm3) of 0.100mol/dm3 copper(II) sulfate solution is required to react completely with a solution containing 0.0250 mol of sodium hydroxide?
CuSO4 + 2NaOH = Cu(OH)2 + Na2SO4
Answer:
3333333333333337ysh
After reaction, 20cm3 of oxygen will be left and 20cm3 of carbon dioxide will be produced. 12.5cm3 of 0.100 mol/dm3 copper(II) sulfate solution is required to react completely with a solution containing 0.0250 mol of sodium hydroxide.
Explanation:In the experiment, 10cm3 of ethene (C2H4) was burnt in 50cm3 of oxygen. According to the equation (C2H4 + 3O2 = 2CO2 + 2H2O), every one molecule of ethene reacts with three molecules of oxygen to produce two molecules of carbon dioxide (CO2) and two molecules of water (H2O). As ethene and oxygen are both gases, we can apply the concept of stoichiometry in gases, and say that one volume of ethene will react with three volumes of oxygen, and produce two volumes of carbon dioxide. So, when 10cm3 of ethene burn, it will require 30cm3 of oxygen and produce 20cm3 of carbon dioxide. Hence, the remaining volume of oxygen is 50cm3 - 30cm3 = 20cm3 of oxygen.
As for the second problem, since one molecule of copper(II) sulfate (CuSO4) reacts with two molecules of sodium hydroxide (NaOH) according to the equation (CuSO4 + 2NaOH = Cu(OH)2 + Na2SO4), 0.0250 mol of NaOH would react with 0.0250 / 2 = 0.0125 mol of CuSO4. In terms of volume, that's 0.0125 mol * 1000cm3/mol = 12.5cm3 of 0.100 mol/dm3 copper(II) sulfate solution.
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Which quantity will increase if the temperature is raised?
OA) grams of product produced in one minute
OB) grams of product at the end of the reaction
OC) concentration of product at the end of the reaction
OD) concentration of reactants at the end of the reaction
My Everest is the highest mountain on earth.its height is 8.848 km. Convert this height to feet. Write your answer in standard number format and using scientific notation
Answer: [tex]2.9(10)^{7} ft[/tex]
Explanation:
Firstly we need to know that [tex]1 km=3280.84 ft[/tex], then we cam make the conversion:
[tex]8848 km \frac{3280.84 ft}{1 km}=29,028,872.32 ft[/tex] This is the height of Mount Everest in feet
However, we can express it using scientific notation by counting to the left the decimal spaces:
[tex]29,028,872.32 ft \approx 2.9(10)^{7} ft[/tex]
The Mendeleev and Moseley periodic charts had
gaps for undiscovered elements. Why do you think the chart used by Moseley was more accurate at predicting where new elements would be placed?
Answer:
Here are all of the answers for the page you are on
12.N - Atomic mass: 14.007 Atomic number: 7 outermost: 2P - Atomic mass: 30.974 Atomic number: 15 outermost: 3 As - Atomic mass: 74.922 Atomic number: 33 outermost: 4Sb - Atomic mass: 121.757 Atomic number: 51 outermost: 513.Mercury- Hg, 12, 6Iodine- 1, 7, 5Sodium- Na, 1, 3Nitrogen- N, 5, 214.K- potassium, metalSi- silicon, metallidS- Sulfur, nonmetal15.The Moseley chart was based on using the atomic mnumber of the element, not the chemical properties. Because of the similarities between elements of the same period, this often created problems in establishing an order; Moseley's work enabled the change of the atomic number from an arbitrary selection to a definable property, measurable through experimentation.
Explanation:
12.N - Atomic mass: 14.007 Atomic number: 7 outermost: 2P - Atomic mass: 30.974 Atomic number: 15 outermost: 3 As - Atomic mass: 74.922 Atomic number: 33 outermost: 4Sb - Atomic mass: 121.757 Atomic number: 51 outermost: 513.Mercury- Hg, 12, 6Iodine- 1, 7, 5Sodium- Na, 1, 3Nitrogen- N, 5, 214.K- potassium, metalSi- silicon, metallidS- Sulfur, nonmetal15.The Moseley chart was based on using the atomic mnumber of the element, not the chemical properties. Because of the similarities between elements of the same period, this often created problems in establishing an order; Moseley's work enabled the change of the atomic number from an arbitrary selection to a definable property, measurable through experimentation.
The chart used by Moseley was more accurate at predicting where new elements would be placed - due to fact that Moseley's chart was based on using the atomic number of the element, not the chemical properties or the atomic mass as Mendeleev.
Mendeleev's table had organized the elements by their atomic mass whereas Moseley's table had organized the elements by their atomic number.
This difference is the major reason Mosely's table is more accurate in order to place newly discovered elements:The Moseley chart was based on using the atomic number of the element, not the chemical properties. the similarities between elements of the same period caused problems in other's charts in establishing the place in the correct order.Isotopes are also caused problems.Moseley's work enabled the change of the atomic number from an arbitrary selection measurable through an experiment.Thus, due to fact that Moseley's chart was based on using the atomic number of the element, not the chemical properties or the atomic mass as Mendeleev.
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some scientists believe that helium should not be used to inflate party balloons. why
What will be the amount of sugar in milligrams if the size of the milk chocolate bar is reduced from 11.630 g to 4.000 g ?
Express your answer in milligrams to four significant figures.
The amount of sugar in the milk chocolate bar, when reduced from 11.630 g to 4.000 g, would be approximately 3999 mg, assuming the sugar content scales directly with the weight of the chocolate bar.
Explanation:To determine the amount of sugar in milligrams when the size of the milk chocolate bar is reduced from 11.630 g to 4.000 g, we must understand that the question implicitly suggests a direct relationship between the chocolate bar's weight and its sugar content. Assuming the sugar content scales directly with the weight, we can use a proportion based on the known values, while ensuring that our final answer is expressed in milligrams (mg) and to four significant figures.
First, we need the original sugar content in milligrams for the 11.630 g chocolate bar. Without this specific information, let's assume that the entire mass is sugar for demonstration purposes: 11.630 g equals 11630 mg (since 1 g = 1000 mg). If the bar is reduced to 4.000 g and the sugar scales directly, the amount of sugar in the reduced bar can be calculated as follows:
Convert the reduced size of the chocolate bar into milligrams: 4.000 g = 4000 mg.To maintain proportion, (4000 mg / 11630 mg) × 100% = 34.39% of the original sugar content is present in the reduced size.The actual amount of sugar in the reduced size bar can then be calculated as 11630 mg × 34.39% = 3998.87 mg, rounded to four significant figures gives 3999 mg.Acetaldehyde and butanoic acid must have the same
Final answer:
Both acetaldehyde and butanoic acid contain a carbonyl group (C=O), which is their similarity. Acetaldehyde is an aldehyde with the carbonyl group bonded to a hydrogen atom, and butanoic acid is a carboxylic acid with the carbonyl group bonded to an -OH group.
Explanation:
The question regarding acetaldehyde and butanoic acid pertains to the similarity of their functional groups. Both acetaldehyde and butanoic acid contain the carbonyl group (C=O). However, acetaldehyde is an aldehyde with the carbonyl group bonded to at least one hydrogen atom, giving it the formula CH3CHO, while butanoic acid is a carboxylic acid where the carbonyl group is bonded to an -OH group, giving it the formula C3H7COOH. Where they must have the same is in having the carbonyl group. Acetaldehyde acts as a starting material in the synthesis of many other organic compounds and occurs naturally in various foods; it also forms in the body during the metabolism of alcohol. On the other hand, butanoic acid has an unpleasant smell and is found in butter and animal fats. While both compounds are functionally different, their similar characteristic lies in the presence of the carbonyl group.
Acetaldehyde and butanoic acid both have a carbonyl group (C=O) in their structure.
Acetaldehyde and butanoic acid must have the same type of functional group known as the carbonyl group, which is denoted as C=O.
In acetaldehyde, the structure is CH₃CHO, where the carbonyl group is bonded to a hydrogen atom and a methyl group (CH₃). Butanoic acid, with the structure CH₃CH₂CH₂COOH, also contains a carbonyl group, but in this case, it is bonded to a hydroxyl group (OH) on the same carbon atom, characterizing it as a carboxylic acid.
The presence of the carbonyl group in both compounds facilitates similar reactions, such as the ability to form hydrates by adding water. This commonality is essential in understanding the fundamental properties and reactions of organic compounds in chemistry.
How do scientific models help us teach students about systems?
A)Models make systems more complicated and easier to learn.
B)Models cannot help students learn because they are too complicated to use.
C)Models can only help students in rich schools that can afford to purchase models which are very expensive.
D)By increasing or decreasing the size of systems that are difficult to study we make it easier for students to see how they work and therefore make it easier for them to learn.
Answer:
a
Explanation:
a
A)Models make systems more complicated and easier to learn.
A chemist has a jar containing 388.3 g of iron filings. How many moles of iron does the
jar contain?
Answer:
6.94 mol
Explanation:
Data given:
Mass of iron filings (Fe) = 388.3 g
no. of moles of iron (Fe) = ?
Solution:
For this formula will be used
no. of moles = Mass in grams/ molar mass
molar mass of Fe = 56 g/mol
Put values in equation
no. of moles = 388.3 g / 56 g/mol
no. of moles = 6.94 mol
So,
no. of moles of iron in jar = 6.94 mol
The jar contains approximately 6.95 moles of iron.
Explanation:The number of moles of a substance can be calculated using the formula:
moles = mass / molar mass
In this case, the mass of iron filings is given as 388.3 g. The molar mass of iron is 55.845 g/mol. By substituting these values into the formula, we get:
moles = 388.3 g / 55.845 g/mol = 6.95 mol
Therefore, the jar contains approximately 6.95 moles of iron.
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what is the definition of sound energy
Answer:
Sound energy is the form of energy generated when an object vibrates. Once produced through vibrations, sound energy is transferred in waves through mediums such as air and water before it reaches your ears.
Sound energy is a type of energy associated with the vibration of matter and its transmission from a source. It involves both kinetic and potential energy, traveling in periodic waves causing simple harmonic motions in atoms. It is perceived through hearing.
Explanation:Sound energy represents a type of energy associated with the vibration of matter. It emerges as a result of a disturbance of matter transmitted from the source outward. The atoms undergoing this disturbance are typically more organized than their thermal motions.
Sound energy involves the movement of particles, thus, combining both kinetic and potential energy. This movement is due to the elasticity of the material in which the sound is propagating. It's essential to note that sound energy travel in waves, more specifically, periodic waves, causing atoms to undergo simple harmonic motions.
The perception of sound energy is what we often refer to as hearing. Just as sight is the perception of visible light, hearing is how we interpret the energy carried by sound waves.
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calculate the amount of heat energy required to evaporate 25.7g of water at 100 degrees celcius. (Molar heat of vaporization of liquid water= 4.07x10^4 J/mol)
Answer:
5.82 ×10⁴ j
Explanation:
Given data:
Mass of water = 25.7 g
Amount of heat to evaporate it = ?
Molar heat of vaporization = 4.07×10⁴ j/mol
Solution:
First of all we will calculate the number of moles of water.
Number of moles = mass/ molar mass
Number of moles = 25.7 g/ 18 g/mol
Number of moles = 1.43 mol
Energy needed for one mole is 4.07×10⁴ j.
For 1.43 mol:
1.43 mol × 4.07×10⁴ j/ 1mol
5.82 ×10⁴ j
In the redox reaction below, which is the reducing agent? Cl- Cl2 Mn2+ MnO2
Answer:
Cl⁻ is the reducing agent.
Explanation:
The redox reaction is as follow:
MnO₂ + 4H⁺ + 2Cl⁻ → Mn²⁺ + 2H₂O + Cl₂
One should know the following terms,
Reducing agent:
An atom or element which tends to lose electron during a chemical reaction and get itself oxidized. In above reaction Cl⁻ is reducing agent as it carries a negative charge (means it has one extra electron) on the reactant side while, it has zero oxidation state on the product side. It means going from -1 to 0 the Cl lost one electron hence, it is an reducing agent according to definition.
Oxidizing Agent:
On the other hand oxidizing agent is an element or compound which tends to accepts electron(s) and get itself reduced. In above reaction Mn has an oxidation state of +4 on reactant side and after gaining electron from Cl it has changed to +2 on the product side. Hence, it has reduced but has oxidized the Cl atom so it is an oxidizing agent according to definition.
what is -22 = -9+ n
Answer:
n= -13
Explanation:
-22 = -9 + n
first flip the equation
n + -9 = -22
then add 9 beacuse we need to do the opposite to find n
so -22 + -9 = - 13
so n = -13
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Water has a vapor pressure of 23.8 mm Hg at 25°C and a heat of vaporization of 40.657 kJ/mol. Using the Clausius-Clapeyron equation given below, determine the vapor pressure of water at 96°C.
ln
P2
P1
=
−ΔHvap
R
1
T2
−
1
T1
Answer:
P = 559.553 mmHg
Explanation:
Clasius-Clapeyron:
Ln(P2/P1) = - ΔHv/R [ 1/T2 - 1/T1 ]∴ P1 = 23.8 mmHg = 3.173 KPa
∴ T1 = 25°C ≅ 298 K
∴ ΔHv = 40.657 KJ/mol
∴ R = 8.314 E-3 KJ/K.mol
∴ T2 = 96°C ≅ 369 K
⇒ Ln P2/P1 = - (40.657 KJ/mol/8.314 E-3 KJ/K,mol) [(1/369 K) - (1/298 K) ]
⇒ Ln P2/P1 = - (4890.185 K) [ - 6.457 E-4 K-1 ]
⇒ Ln P2/P1 = 3.1575
⇒ P2/P1 = 23.511
⇒ P2 = (23.511)(3.173 KPa)
⇒ P2 = 74.601 KPa = 559.553 mmHg
How many moles of Lithium oxide will form if 2.0 moles of Lithium reacts?
Li + O2 → Li2O
Answer:1 mole Li2O
Explanation: Solution attached
First balance the given chemical equation
4 Li + O2 => 2 Li2O
The stoichiometric factor of Li and Li2O is 4 moles Li and 2 moles Li2O
Solution:
2 moles Li x 2 moles Li2O / 4 moles Li
= 1 mole Li2O
What is cogeneration? Cogeneration is a process of producing electricity and ______ simultaneously.
Explanation:
cogeneration prodeuces electricity from steam and uses steam in other chemical reactions simultaneously.
Answer:
It’s heat
Explanation:
How many grams are in 88.4 moles of NI3?
Answer: 34,918 g NI3
Explanation: solution attached:
Use the relationship of 1 mole NI3 is equal to its molar mass 395 g NI3
88.4 moles NI3 x 395 g NI3 / 1 mole NI3
= 34,918 g NI3
What is responsible for the force that makes up an ionic bond?
Answer:
Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
Explanation:
Answer: The electrostatic attraction between the opposite charged ions is responsible for the force makes up ionic bonds
Explanation:
Liquid diphenhydramine comes in a concentration of 12.5 mg per 5 ml
. Using the dosage calculated, how many milliliters of diphenhydramine should be administered to the child?
Answer:0.102 milliliters is required
Explanation:
The easy way to obtain this is to take unit conversation very important as diphenhydramine has a molar mass of 255.355grams per mole and the concentration of the liquid diphenhydramine is 12.5 milligrams per 5 milliliters.
We have to convert the molar mass into milligrams per mole by dividing by 1000 which yields 0.255355mg/mol then;
Simplify the molar mass divided by the concentration of the liquid diphenhydramine;
0.255355/12.5/5
This equals 0.102 milliliters!
Without the specific dosage, we cannot give a specific amount of milliliters. However, if we knew the dosage, we could use a proportion to calculate the corresponding milliliters. For example, a dosage of 25 mg would result in an administration of 10 mL.
Explanation:The question seems to be missing the specific dosage that should be given to the child. However, if we knew the specific dosage, we could calculate the milliliters of diphenhydramine to be administered using a proportion. For example, if the dosage was 25 mg, we would use the information that 12.5 mg corresponds to 5 mL to set up the equation: 12.5 mg/5 mL = 25 mg/x mL. Cross multiplying gives the equation 12.5x = 125, so x = 10 mL would be the appropriate dosage.
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A pure organic amide product (2.85 g) which has a molecular weight of 285.34 g/mol was fully dissolved in 20mL of the boiling solvent, hexanes. This organic amide product then underwent a recrystallization when the solvent was cooled to 0° C. The recrystallized organic product (2.62 grams) was obtained after vacuum filtration. What is the solubility of the organic amide product in the solvent, hexanes, at 0° C?
Answer:
The solubility of the organic amide product in the solvent hexane is 0.0403 moles/L at 0° C
Explanation:
When 2.85gm dissolved in 20ml of boiling solvent
After re crystallization 2.62gm was obtained
so, that the dissolved amount at 0° C is
2.85 - 2.62
= 0.23 gm in 20ml hexane
Mole of amide [tex]= \frac{0.23}{285.34} moles[/tex]
Solubility [tex]= \frac{0.23}{285.34} \times \frac{1000}{20}[/tex]
= 0.0403 moles/L
Therefore, the solubility of the organic amide product in the solvent hexane is 0.0403 moles/L at 0° C
Limiting Reactant Worksheet
1. Consider the following reaction: 2 AI + 5 HBr
2 AIBT,
3 H,
a. When 3.22 moles of Al reacts with 4.96 moles of HBr, how many moles of H, are formed?
b. What is the limiting reactant?
c. What is the excess reactant?
1.61 mol, Al acting as a limiting reactant, and an excess of HBr
3.22 mol of Al in moles
4.96 mol of HBr is one mole.
Moles of H2O generated =?
What is the excess reactant? What is the limiting reactant?
Chemical formula:
A + B + H₂ = 2AlBr + H
We shall now contrast the moles:
Al: H
Step 2:
In 3.22: 1/2×3.22 = 1.61 mol
HBr: H₃
Step 2:
2.48 mol is equal to 1/2×4.96 in this case.
Since Al produces fewer moles of H3 than HBr, it will operate as a limiting reactant when HBr is present in excess.
Moles of H₂:
1.61 mol of H2 is the number of moles.
When one s- and one p-orbital mix, the resulting hybrid orbitals have a geometry.
A) Trigonal-planar
B) Tetrahedral
C) Linear
When one s- and one p-orbital mix, the resulting hybrid orbitals have a Linear geometry
Explanation:
To produce two similar sp hybrid orbitals the process of combining the valence s orbital with one of the valence p orbitals that are situated in a linear geometry is termed as hybridization method. When atoms are arrayed in a vertical line supporting 180° angle then the molecule is referred to as Linear molecule.
Carbon dioxide (O=C=O) is the most common sample to explain the linear electron set and molecular geometry. In which there exists a pair of electrons and none lone pairs present. It is accordingly linear in electron-group geometry. The repellent forces depreciate the linear adjustment
Answer:
linear
trigonal planar
tetrahedral
Explanation:
21. aluminum sulfate + calcium hydroxide - aluminum hydroxide + calcium sulfate
please help me balance this equation
Al2(SO4)3 + 3Ca(OH)2 -> 2Al(OH)3 + 3Ca(SO)4
Al[tex]_2[/tex](SO[tex]_4[/tex])[tex]_3[/tex]+ 3Ca(OH)[tex]_2[/tex] [tex]\rightarrow[/tex] 2Al(OH)[tex]_3[/tex]+ 3Ca(SO)[tex]_4[/tex] is the balanced equation. An imbalanced chemical equation describes the products and reactants of a chemical reaction.
What is balanced equation?A balanced equation is indeed a chemical reaction equation in which the overall charge and the amount of atoms for every element inside the reaction are the same for both the products and the reactants. In those other words, the mass plus charge on both side of the reaction are balanced.
An imbalanced chemical equation describes the products and reactants of a chemical reaction yet does not include the quantities needed to meet mass conservation. The balanced equation for the given reaction is Al[tex]_2[/tex](SO[tex]_4[/tex])[tex]_3[/tex]+ 3Ca(OH)[tex]_2[/tex] [tex]\rightarrow[/tex] 2Al(OH)[tex]_3[/tex]+ 3Ca(SO)[tex]_4[/tex].
Therefore, Al[tex]_2[/tex](SO[tex]_4[/tex])[tex]_3[/tex]+ 3Ca(OH)[tex]_2[/tex] [tex]\rightarrow[/tex] 2Al(OH)[tex]_3[/tex]+ 3Ca(SO)[tex]_4[/tex] is the balanced equation.
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Which question is the scientist most likely trying to answer about the bacteria
Final answer:
A scientist questioning the energy mechanisms in newly discovered methanogenic bacteria might focus on metabolic pathways and evolutionary adaptations. Observations of motility in stab cultures and the isolation of penicillin by Alexander Fleming demonstrate the importance of empirical observation in microbiology.
Explanation:
When a scientist discovers a new bacterial species that is a methanogen, to better understand the evolution of mechanisms related to the capturing, storing, and using free energy in prokaryotes, the scientist might ask: "How does this methanogenic bacteria capture, store, and utilize free energy compared to other prokaryotes?" This question aims to investigate the metabolic pathways and energy transformation mechanisms that enable the bacteria to produce methane. It also allows for a broader comprehension of evolutionary processes and adaptation strategies among prokaryotes.
Concerning motility, observations in a stab culture could indicate bacterial motility if the bacteria have migrated away from the line of inoculation, suggesting that they might move by mechanisms such as flagella or cilia. An investigation to determine which household item has the most bacteria would involve swabbing the surfaces, culturing the collected samples, and then counting the colonies to compare the levels of bacterial presence. Hypotheses in this experiment would be based on the expected bacterial load of each item, and the results could validate or refute these suppositions.
Furthermore, Alexander Fleming's discovery of penicillin involved observing a zone of inhibition around a Penicillium mold in a culture of bacteria, which led him to theorize that the mold produced a substance lethal to the bacteria—leading to the isolation of penicillin.
What is the movement of air from high-pressure areas to low-pressure areas? is the movement of air from high- pressure areas to low pressure areas.
Answer:
The "pressure gradient" causes the movement of air from high-pressure areas to low-pressure areas.
Explanation:
The pressure gradient is the physical entity which tells us about the direction of the air in which it will move. It also tells us about the rate at which it will increase as well as decrease in the specific location. The unit of the pressure gradient used is pascals per metre. The difference of this quantity creates uneven increase in the temperature of the surface of the Earth, only when the solar radiation focuses over the equator. They are also the reason behind the beginning movement of the air.
Answer:
wind
Explanation:
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56 Explain, in terms of atomic structure, why the elements in Group 2 have similar
chemical properties. 131
Elements in group 2 have similar chemical properties due to the same number of valence electrons.
Explanation:
These are also known as alkaline earth metals. The Group 2 elements are 6 in number. This is the second most reactive elements after the alkali metals of group1.
These are group 2 elements because they contain 2 electrons in their valence shell.
They can easily form compounds by ionic bonds.
The elements in Group 2 have similar chemical properties because they have the same number of valence electrons in their atomic structure.
Explanation:
The elements in Group 2, also known as the alkaline earth metals, have similar chemical properties due to their atomic structure. Each element in Group 2 has two valence electrons in its outermost energy level. This similarity in valence electron configuration means that these elements have similar tendencies to lose two electrons and form +2 ions. For example, beryllium, magnesium, and calcium all readily form +2 ions by losing their two valence electrons. This similarity in chemical properties is due to the fact that elements in the same group have the same number of valence electrons.
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Someone please help fast
Answer:
The last region should be right
Explanation:
C12+2KI ➡ 2KC1 + I2 is an example of which type of reaction?
Answer
Cl2+2KI ➡ 2KCl + I2 is an example of redox reaction.
Explanation
While Iodine is being oxidized.
Oxidation addition of electronegative elements such as Chlorine or increase in oxidation number. Reduction, addition of electropositive elements such as Potassium metal or decrease in oxidation number.