The sequence of atomic numbers 1, 2, 3, and 4 denotes the periodic table's ordering of following elements.
What purpose do series serve?Series are significant because they offer a possible point of entry. It's possible for a user to merely be aware of the fact that a publication is part of a specific series or to be searching for all publications in that series without being aware of any of the individual titles. The series could potentially be used as a storage and control system.
A series element is what?There are two ways to recognize elements in a series: The elements are in series if there are two and only two connections between them and a single node. When two elements' currents are determined to be similar by KCL at a node, the elements are in series.
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A molecule has four bonded atoms around a central atom. the central atom does not have any lone pairs of electrons. what is the geometry of the molecule? bent linear trigonal planar tetrahedral
Tetrahedral geometry is obtained when the central atom is bonded with four atoms.
When is the tetrahedral geometry obtained?Tetrahedral literally means "having four faces" because the prefix tetra- specifies four and the suffix -hedral denotes a face of a solid. This shape develops when there are no lone electron pairs and four bonds are all on the same core atom. According to the VSEPR theory, the bond angles between the electron bonds are 109.5°.
Tetrahedral molecules include methane (CH4) as one example. The four comparable bonds in three dimensions correspond to the four corners of a tetrahedron centered on the carbon atom, and they point in the same four geometric directions. Compounds with this molecular shape will have the formula AX4.
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Answer:
tetrahedral
Explanation:
Central atom has:
4 bonded atoms
0 lone pairs
VSEPR shape: tetrahedral
Molecule structure: tetrahedral
Moderate alcohol consumption is no more than ________ alcoholic drink(s) daily for adult women and up to ________ drink(s) daily for adult men
Moderate alcohol consumption is no more than [tex]One[/tex] alcoholic drink(s) daily for adult women and up to [tex]Two[/tex] drink(s) daily for adult men.
What is an alcohol?
Alcohol is an organic compound containing a hydroxyl group and a carbon atom; Alcohol can be an intoxicant found in alcoholic beverages.
An alcoholic drink (also called an alcoholic beverage, adult beverage, or simply a drink) is a drink that contains ethanol, a type of alcohol that acts as a drug and is produced by fermentation of grains, fruits, or other sources of sugar.
The consumption of alcoholic drinks, often referred to as "drinking", plays an important social role in many cultures. Most countries have laws regulating the production, sale, and consumption of alcoholic beverages.
So, according to the scientific studies, the alcoholic consumption for women in a day is not more then one and for men is not for two drink(s)
1 Drink includes:
For beer: 355 ML
For Wine: 148 ML
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What is the molecular geometry if you have 4 single bonds around the central atom?
Tetrahedral geometry is the molecular geometry if you have 4 single bonds around the central atom.
In a tetrahedral molecular geometry, a central atom is located at the centre with four substituents that are located at the corners of a tetrahedron. The bond angles are cos−1(−1⁄3) = 109.4712206...° ≈ 109.5° when all four substituents are the same, as in methane (CH4) as well as its heavier analogues. Methane and other perfectly symmetrical tetrahedral molecules belong to point group Td, but most tetrahedral molecules have lower symmetry. Tetrahedral molecules can be chiral.
The five basic shapes of hybridization are linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral. The geometry of the orbital arrangement: Linear: Two electron groups are involved resulting in sp hybridization, the angle between the orbitals is 180°.
Redistribution of the energy of orbitals of individual atoms to give orbitals of equivalent energy happens when two atomic orbitals combine to form a hybrid orbital in a molecule. This process is called hybridization. During the process of hybridization, the atomic orbitals of comparable energies are mixed together and mostly involves the merging of two ‘s’ orbitals or two ‘p’ orbitals or mixing of an ‘s’ orbital with a ‘p’ orbital as well as ‘s’ orbital with a ‘d’ orbital. The new orbitals thus formed are known as hybrid orbitals. More significantly, hybrid orbitals are quite useful in explaining atomic bonding properties and molecular geometry.
Key Features of Hybridization :
Atomic orbitals with equal energies undergo hybridization.The number of hybrid orbitals formed is equal to the number of atomic orbitals mixing.It is not necessary that all the half-filled orbitals must participate in hybridization. Even completely filled orbitals with slightly different energies can also participate.Hybridization happens only during the bond formation and not in an isolated gaseous atom.The shape of the molecule can be predicted if the hybridization of the molecule is known.The bigger lobe of the hybrid orbital always has a positive sign, while the smaller lobe on the opposite side has a negative sign.Learn more about tetrahedral molecular geometry here : https://brainly.com/question/20274710
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When the solute concentration in solution 1 is lower than the solute concentration in solution 2, solution 2 is:_____.
When the solute concentration in solution 1 is lower than the solute concentration in solution 2, solution 2 is concentrated solution .
The dilute solution and concentrated solution is relative terms.
Now in any solution there are just solute and solvent.
If amount of solute is comparatively high as compare to amount of solvent in solution then solution is called concentrated solution. Similarly , If amount of solute is comparatively low as compare to amount of solvent in solution then solution is called dilute solution.
If the amount of solvent is more in a solution then the amount of solute would be less.Again if the amount of solvent is less in a solution then amount of solute is more.
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What amino acid is formed using the n-phthalimidomalonic ester synthesis when the following alkyl halides are used in the third step?.
Leucine and methionine are the amino acids formed using the n-phthalimido malonic ester synthesis.
The steps involved in phthalimido malonic ester synthesis:
Step 1: Deprotonation To Give An Enolate
In the first step, a base (CH3O– in this case) removes the most acidic proton from the ester (on C2 here, with a pKa of about 13) to give an enolate. The resulting enolate can be drawn as one of two resonance forms.
Step 2: SN2 Reaction Of The Enolate Nucleophile With An Alkyl Halide Electrophile.
Enolates are great nucleophiles. In the second step, the enolate acts as a nucleophile in an SN2 reaction to form a new C-C bond.
Step 3: Acidic Ester Hydrolysis
Acid and water are added to perform the aqueous hydrolysis of the ester to a carboxylic acid.
Step 4: Decarboxylation To Give An Enol
When carboxylic acids have a carbonyl group (C=O) two bonds away, they can readily lose carbon dioxide, because the carbonyl can act as an electron “sink” for the pair of electrons coming from the breaking C–C bond, forming an enol. This is called “decarboxylation”. Note how this is also the case for carboxylic acids with a ketone two bonds away, so-called “β-keto acids”.
Step 5: Tautomerization Of The Enol Back To The Carboxylic Acid
The enol that is formed is not a stable species. It can undergo transformation into its constitutional isomer: in this case, a carboxylic acid. These two constitutional isomers are in equilibrium with each other, although the “keto” form (with the carbonyl group) is greatly favoured. This process is called "tautomerism".
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As energy moves out from the sun’s core toward its surface, it first travels by __________, then by __________, and then by ________
Energy leaves the Sun's core and goes by radiation, convection, and radiation on its way to the surface.
Energy leaves the sun's core and initially travels towards the radiation zone. In the radiation zone, the gas is tightly compressed. Here, electromagnetic waves are absorbed and reradiated to transfer energy. Energy can take more than 100,000 years to get through this area because it is so dense.
Thus, energy radiates out initially from the core before being delivered by convection to the outer layers.
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The molar mass of sulfur (s) is 32.06 g/mol.
calculate the mass in grams of a sample of s containing 2.01 x 10^24 atoms.
Answer:
mass = 107.04 g
Explanation:
The formula for mass is:
[tex]\boxed{mass = mole \space\ no. \times \space\ molar \space\ mass}[/tex].
In this case:
• molar mass = 32.06 g/mol
• mole no. = [tex]\frac{no. \space\ of \space\ atoms}{Avogadro's \space\ number}[/tex]
= [tex]\frac{2.01 \times 10^{24}}{6.02 \times 10^{23}}[/tex]
= 3.339 mol
Substituting these values into the formula for mass :
mass = 3.339 mol × 32.06 g/mol
= 107.04 g
The answer is 107.04 g.
The first step is to find the number of moles of sulfur.
Number of moles = No. of atoms ÷ Avogadro No.
(2.01 × 10²⁴) ÷ (6.02 × 10²³)0.3339 × 103.339 molesNow, to find the mass, multiply the number of atoms by the molar mass.
3.339 × 32.06107.04 gMixed aldol condensations involving benzaldehyde yield typically a single product. draw the structure of the partner that was used to synthesize this molecule:
The partner that is used along with benzaldehyde is acetophenone to yield 1,3-Diphenylprop-2-en-1-one.
What is Adol Condensation?In adol condensation, aldehydes or ketones having α - H atoms undergo condensation in the presence of a dilute alkali to form β - hydroxy aldehydes or ketones.
What is Mixed Adol Condensation?Under mixed or crossed adol condensation,
two different aldehyde molecules or2 different ketone molecules orone aldehyde and one ketone moleculeundergoes condensation in the presence of dilute alkali to form a mixture of β - hydroxy aldehyde or ketone.
The following reaction takes place:
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Question: Mixed aldol condensations involving benzaldehyde yield typically a single product. draw the structure of the partner that was used to synthesize this molecule:
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If the concentration of a dilute solution of nitric acid is 0. 0001 m. What is the ph of that solution?
If the concentration of a dilute solution of nitric acid is 0. 0001 M. The pH of the solution is 4.
What is pH ?pH is used to measure whether the substance is acidic, basic or neutral and the range is 0 - 14.
How to find the pH of the solution ?To calculate the pH hydrogen ion it is expressed as:
pH = - log [H⁺]
So, concentration of hydrogen ion in HNO₃ is 0.0001 M.
pH = - log [0.0001]
= [tex]-\log (\frac{1}{10000})[/tex]
= - log (10)⁻⁴
= -4 × - log (10)
= - 4 × (-1)
= 4
Thus from the above conclusion we can say that The pH of the solution is 4.
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If you attempt to produce work using the formation reaction of methanol (CH3OH), and the reaction is carried out reversibly, what is the minimum amount of heat wasted?
The minimum amount of heat wasted in the production of methanol is 239kJ/mol of heat.
What is the heat wasted?Now we know that the enthalpy is the heat that is released or absorbed in a reaction. The reaction involves the combination of reactants that leads to the formation of the product(s).
Now we know that the production of methanol leads to the evolution of about 239kJ/mol of heat. This heat is wasted as it goes to no good use but is just lost to the environment.
As such, the minimum amount of heat wasted in the production of methanol is 239kJ/mol of heat.
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Why is 15 m acetic acid an appropriate solvent in which to perform rate studies of electrophilic bromintations?.
15M acetic acid an appropriate solvent in which to perform rate studies of electrophilic bromintations as Acetic acid activates the bromine and makes it a better electrophile.
What is electrophilic halogenation?
In organic chemistry, an electrophilic aromatic halogenation is a type of electrophilic aromatic substitution. This organic reaction is typical of aromatic compounds and a very useful method for adding substituents to an aromatic system.Halogenation of Benzene where X is the halogen, catalyst represents the catalyst (if needed) and HX represents the protonated base.A few types of aromatic compounds, such as phenol, will react without a catalyst, but for typical benzene derivatives with less reactive substrates, a Lewis acid catalyst is required. Typical Lewis acid catalysts include AlCl3, FeCl3, FeBr3 and ZnCl2. These work by forming a highly electrophilic complex which is attacked by the benzene ring.To learn more about electrophilic halogenation: https://brainly.com/question/26831851
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Which state of matter is being described below? it cannot be squashed easily, spreads out slowly, is of medium density
Answer:
The correct answer, I think it's liquid
Answer:
I believe that it's liquid
Suppose that 0.50 grams of barium-131 are administered orally to a patient. Approximately how many milligrams of the barium would still be radioactive two months later?
Two months later 13.8 milligrams of the barium-131 still be radioactive.
How is the decay rate of a radioactive substance expressed ?It is expressed as:
[tex]A = A_{0} \times (\frac{1}{2})^{t/T}[/tex]
where,
A = Amount remaining
A₀ = Initial Amount
t = time
T = Half life
Here
A₀ = 0.50g
t = 2 months = 60 days
T = 11.6 days
Now put the values in above expression we get
[tex]A = A_{0} \times (\frac{1}{2})^{t/T}[/tex]
[tex]= 0.50 \times (\frac{1}{2})^{60/11.6}[/tex]
[tex]= 0.50 \times (\frac{1}{2})^{5.17}[/tex]
= 0.50 × 0.0277
= 0.0138 g
= 13.8 mg [1 mg = 1000 g]
Thus from the above conclusion we can say that Two months later 13.8 milligrams of the barium-131 still be radioactive.
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Question: Suppose that 0.50 grams of ban that 0.50 grams of barium-131 are administered orally to a patient. Approximately many milligrams of the barium would still be radioactive two months later? The half-life of barium-131 is 11.6 days.
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Pop is made up of three major parts (water, carbon dioxide, and sugar). Assume that all other ingredients are present in insignificant amounts. Explain how could you determine the moles and particles of water, carbon dioxide, and sugar in your pop. Be sure to show any necessary formulas in your answer.
If you were given the the total # of grams of all three compounds with the % of each molecular compound - H2O, CO2 and sugar [you would need to know the type of sugar in the Pop such as C12H22O11 as to find its MM (molar mass)]
To begin take the % of each compound x the total grams of all the compounds. For illustrative purposes let's say it works out to be 50 grams of H2O in the POP. The same would be. done for CO2 and for the sugar.
Step 1) With the mass of each you could determine the # of moles of each:
Example if the number grams of water in the sample is 50g, to determine the # of moles of water you would do the following - 50g H20 x 1 mol/18g H20 = 2.8 mol H2O The same technique would be used for the other compounds to find the # of moles.
Step 2) To find the representative particles of each(molecules, atoms) you would do the following:
as the example given of above for H20 - 50 grams you calculated as shown above to be the number of mol of H20 = 2.8mol
From the number of mol of H20, to determine the # of molecules of water you would set up the following:
2.8 mol H20 x 6.02 x 10^23/1 mol H2O = 1.69 X 10^24 molecules of H20.
The same would be done for CO2 and the sugar.
Step 3) Now to find the number of atoms of element of the compound taking for example the H2O example above:
Take the # of molecules of H2O found above and set it up in the following manner:
1.69 X 10^24 molecules H2O x 2 atoms H/1 molecule H2O = 3.38 x 10^24 atoms H
1.69 x 10^24 molecules H2O x 1 atom O)/1 molecule H2O = 1.69 X 10^24 atoms O
The same would be done for CO2 and for the sugar compound.
If it takes 35. 04 ml of a 0. 2455 m naoh solution to neutralize 25. 00 ml of an unknown hcl solution, what is the molarity of the hcl solution?
If it takes 35.04ml of a 0.2455M NaOH solution to neutralize 25. 00ml of an unknown HCl solution, the molarity of the HCl solution is 0.34M.
How to calculate molarity?The molarity of a solution can be calculated using the following formula:
C1V1 = C2V2
Where;
C1 = molarity of acidC2 = molarity of baseV1 = volume of acidV2 = volume of baseAccording to this question, it takes 35. 04ml of a 0. 2455M NaOH solution to neutralize 25.00ml of an unknown HCl solution. The molarity of the HCl can be calculated as follows:
35.04 × 0.2455 = 25.0 × V2
8.602 = 25C2
C2 = 8.6/25
C2 = 0.34M
As a result, the molarity of the HCl solution is 0.34M if it takes 35. 04ml of a 0.2455M NaOH solution to neutralize 25ml of an unknown HCl solution.
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According to the iupac convention, alkyl substituents on a hydrocarbon chain should be listed in which order?
According to the IUPAC convention alkyl substituents on a hydrocarbon chain should be listed in alphabetical without considering prefixes order.
What is IUPAC convention?IUPAC convention of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).
The name of the compound is written out with the substituents in alphabetical order followed by the base name (derived from the number of carbons in the parent chain).
Types of IUPAC Nomenclature of a few important aliphatic compounds:
AlkaneAlkeneAlkyneExample :
Ethane, which has 2 carbon atoms and 6 hydrogen atoms, with the molecular formula of = C₂H₆
Formation of alkyl group:
Methane (CH₄) Remove 1 hydrogen (H) convert to methyl (H₃-C-)
Example: Propyl (-CH₃ - CH₂ - CH₂ - )
According to the IUPAC convention alkyl substituents on a hydrocarbon chain should be listed in alphabetical without considering prefixes order.
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A solution with a ph of 6 has ________ times as many hydrogen ions as a solution with a ph of 8.
Answer:
A solution with a ph of 6 has 100 times as many hydrogen ions as a solution with a ph of 8.
Explanation:
At 7 on the pH scale, a solution is neutral. Any pH lower than 7 is acidic and any pH above 7 is basic.
Acidity is a measure of the concentration of hydrogen ions in a solution. The more acidic a solution, the more hydrogen ions it has. Therefore, if the pH is decreasing, the hydrogen ion concentration is increasing.
The pH scale increases by a factor of 10. This means that for every one unit change, the hydrogen ion concentration changes tenfold. Therefore, if the pH is decreasing by 2 units (from pH 8 to pH 6), the hydrogen ion concentration should increase 100-fold (10 x 10 = 100).
For a particular redox reaction, bro− is oxidized to bro−3 and fe3 is reduced to fe2. complete and balance the equation for this reaction in basic solution. the phases are optional
The balanced chemical equation in a basic solution will be,
[tex]BrO^{-} + 4OH^{-} +4Fe^{+3}[/tex] → [tex]BrO_{3} ^{-} + 4H_{2} O+4Fe^{+2}[/tex]
The reaction in which oxidation and reduction reaction takes place simultaneously is called redox reaction or oxidation - reduction reaction .
Rules for the balanced chemical equation in a basic solution are :
First write half - reaction.Now balancing the main atoms in the reactionNow balancing the hydrogen and oxygen atoms on both sides of the reaction .If the oxygen atoms is not balance on both side then add water molecule at that side at that side where more number of oxygen atom is present.If the hydrogen atom are not balanced on both side then add hydroxide ion at that side of where less number of hydrogen are present.Now at last balance the charge.Therefore, the balanced chemical equation in a basic solution will be,
[tex]BrO^{-} + 4OH^{-} +4Fe^{+3}[/tex] → [tex]BrO_{3} ^{-} + 4H_{2} O+4Fe^{+2}[/tex]
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Which component of the electron-transport chain is required to combine the pair of electrons with molecular oxygen?
n oxidative phosphorylation, ATP production is coupled to the events in the electron-transport chain
What are the spectator ions in the reaction between aqueous zncl2 and aqueous na2co3?(choose all that apply)
Sodium and chloride are the spectator ions in the reaction between aqueous zncl2 and aqueous na2co3.
Spectator ions are ions that are present on both sides of chemical reactions but do not take part in the reaction itself. The spectator ions on both sides of the equation are cancelled in the net chemical reaction. So, to "spectate" is to "see" the other ions in an aqueous solution interact with one another.
An ion known as a spectator is one that is present both before and after a chemical reaction but does not take part in it. Sodium is a spectator ion in an aqueous solution of sodium hypochlorite (NaOCl, bleach): Na+ + HOCl + OH or OCl- + H2O -
Cross out the spectator ions after comparing the reactant and product sides. Observer ions are any dissolved ions that exhibit the same form on both sides.
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what is the percent abundance of the size 4d nails in this sample. PLS ASAP
Answer:
? = 61.5%
Explanation:
To find the percent abundance of 4d nails, you need to use the following equation:
Percent Abundance = (number of nails / total nails) x 100%
Percent Abundance (4d) = (123 / 123 + 77) x 100%
= (123 / 200) x 100%
= 0.615 x 100%
= 61.5%
how to find the concentration of acid or alkali with pH value given
Answer: Use the pH scale.
Explanation:
What chemical process is responsible for the smell of vinegar in an old bottle of aspirin?
Chemical process is responsible for the smell of vinegar in an old bottle of aspirin is Hydrolysis of ester i.e. Aspirin.
Aspirin reacts with water leading to the formation of Acetic acid which is a Carboxylic acid derivative.
Aspirin on Hydrolysis forms Acetic acid and Salicylic acid.
The reaction shows up as a fizz when aspirin is added in water.
Aspirin is called Acetyl Salicylic acid and it helps to reduce:
InflammationPainFeverHeadacheArthritisMuscle painTooth painAcetic acid or Ethanoic acid is a colorless liquid. It is an important carboxylic acid. It smells like vinegar.
Acetic acid is used for production of following:
Vinyl AcetateInsecticidesRubberAcetic anhydrideSalicylic acid is a bitter compound which is colorless. It reduces acne and opens up the skin pores.
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During action potential, positively charged ________ ions move inside the cell.
a. potassium
b. bromine
c. chloride
d. sodium
During action potential, positively charged sodium ions move inside the cell.
So option D is correct one.
The sodium ion moves inside the cell during a action potential. The stage of action potential is called depolarization . This open voltage gated sodium channel.
Action potentials ( those electrical impulse that send signals around body ) is nothing but more than temporary shift ( from negative to positive ) in the neuron's membrane potential caused by ions suddenly flowing in and out of the neuron.
It consists of phases:
DepolarizationovershootrepolarizationAn active potential propagates along the cell membrane of an axon until it reaches the terminal button.
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100 POINTS - is air trapped in a jar a compound, element, homogeneous mixture or heterogeneous mixture
Answer:
homogenous mixture
Explanation:
homogenous mixtures appear in one phase and have even particle distribution.
Answer:
Air is indeed a homogeneous mixture of dinitrogen, dioxygen, carbon dioxide and a few other gases. All of the gases are in the same phase, and thus constitute a homogeneous mixture.
Explanation:
hope it helps youA vessel with a volume of 32. 5 l contains 2. 80 g of n2 gas, 0. 403 g of h2 gas, and 79. 9 g of ar gas. at 25°c, what is the total pressure in the vessel? show the set up and answer with unit
The total pressure of the gases in the vessel is found out by using the partial pressures of individual gases and adding them up. The total pressure of the gases in the vessel is 1.72 atm.
The Partial pressure of the gases is the individual pressure of the gases present in a vessel containing a mixture of gases. The total pressure can be found out by adding partial pressure of all gases.
Given:
Volume of vessel, V= 32.5L
Mass of Nitrogen gas = 2.8g
Mass of Hydrogen gas = 0.403g
Mass of Argon gas = 79.9g
We know that:
Molar Mass of Nitrogen gas = 28g
Molar Mass of Hydrogen gas = 2g
Molar Mass of Argon gas = 40g
∴ Moles of gas = Given mass / Molar mass
∴ Using the Ideal Gas Equation:
PV = nRT
where, P is the Pressure of gas
V is the volume of gas
n is the moles of gas
R is the Universal Gas constant
T is the temperature
Applying the above equation of all three gases indivudually,
∴ For Nitrogen,
P₁V = n₁RT
⇒ P₁ × 32.5 = 2.8/28 × 0.082 × 298
⇒ P₁ = 0.07atm
∴ For Hydrogen,
P₂V = n₂RT
⇒ P₂ × 32.5 = 0.4/2 × 0.082 × 298
⇒ P₂ = 0.15 atm
∴ For Argon,
P₃V = n₃RT
⇒ P₃ × 32.5 = 79.9/40 × 0.082 × 298
⇒ P₃ = 1.5 atm
∴ Total pressure of vessel, P = P₁ + P₂ + P₃
P = 1.72 atm
The total pressure of the gases in the vessel is 1.72 atm.
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A thorium-232 nucleus decays by a series of alpha and beta emissions until it reaches astatine-212. how many alpha emissions and how many beta emissions occur in this series of decays?
There are 5 alpha and 5 beta particle emit emission of thorium-232 nucleus into astatine-212.
A beta ray would be released from such an atomic nucleus during a radioactive decay process known as beta decay. The proton in the nucleus changes from a proton to a neutron throughout beta decay, and vice versa.
It is given that, The atomic mass of Th = 232
Atomic mass of astatine = 212
Atomic number of Th = 90.
Atomic number of astatine = 85
Number of alpha particle = difference between atomic mass / 4
Number of alpha particle = 232-212 /4
Number of alpha particle = 20/4
Number of alpha particle = 5
Thus, the number of alpha particle will be 5.
Number of beta particle = difference between atomic number
Number of beta particle = 90-85
Number of beta particle = 5
Thus, the number of beta particle will be 5
Therefore, the number of alpha and beta particle will be 5 and 5.
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Match the following vocabulary words with their correct definitions.
1. single displacement
2. reactant
3. double displacement
4. product
One of the starting substances
involved in a chemical reaction.
lons in aqueous compounds
exchange cations and anions
respectively.
A substance formed as a result of a
chemical reaction.
One element replaces another in a
compound.
Single displacement
One element replaces another in a compound.Reactant
One of the starting substances involved in a chemical reaction.Double displacement
Ions in aqueous compounds exchange cations and anions respectively.Product
A substance formed as a result of a chemical reaction.Rutherford’s gold foil experiment gave evidence that an atom is mostly empty space. true false
The given statement is true .
What is Rutherford’s gold foil experiment?A piece of gold foil was hit with alpha particles, which have a favorable charge. Most alpha particles went right around. This showed that the gold particles were mostly space.The Rutherford gold leaf investigation supposed that most (99%) of all the mass of an atom is in the middle of the atom, that the nucleus is very small (105 times small than the length of the atom) and that is positively captured.For the distribution experiment, Rutherford enjoyed a metal sheet that could be as thin as practicable. Gold is the most malleable of all known metals. It can easily be converted into very thin sheets. Hence, Rutherford established a gold foil for his alpha-ray scattering experimentation.To learn more about Rutherford’s gold foil experiment, refer to:
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Predict the nature of the indicated covalent bond. polar or non-polar
The given bond is polar covalent bond.
Polar covalent bonds are covalent bonds in which the electrons are shared unequally. Nonpolar covalent bonds are covalent bonds with an equal distribution of electrons. Chemists utilise electronegativity, a relative measurement of how strongly an atom attracts electrons as it forms a covalent connection, to assess the relative polarity of a covalent bond.
Polarity characterises io3-. If a molecule's dipole moment is greater than 0, it is considered to be polar. The three I-O bonds in this combination are polar due to the difference in electronegativity between the I and O atoms. The three I-O bond moments point toward I atom because I is more electronegative than O atom.
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