The volume of the DNA solution, is 4μL, that needs to be added to the reaction mixture.
What is Dilution Equation?The Dilution Equation is represented as
M₁V₁ = M₂V₂
where,
M₁ represent the Molarity of Stock solution
M₂ represent the Molarity of new solution
V₁ represent the initial volume from stock solution
V₂ represent the final volume from stock solution
Here
M₁ = 12.5 ng/μL
M₂ = 1 ng/μL
V₂ = 50 μL
Now put the values in above formula we get the initial volume as
M₁V₁ = M₂V₂
(12.5 ng/μL) x V₁ = (1 ng/μL) x 50 μL
12.5 x V₁ = 1 x 50 μL
V₁ = 50 / 12.5 μL
V₁ = 4 μL
Learn more about the Dilution Equation here: https://brainly.com/question/24709069
#SPJ4
NOTE: The given question is incomplete on the portal. Here is the complete question.
QUESTION: Let's say that you ordered 2.00 μg of double stranded DNA. You want to conduct an experiment but you need to prepare a DNA solution whose concentration is 12.5 ng DNA/1 μL of water. You then ordered forward (the amount being 234 μg) and reverse primers (the amount being 216 ug). You figure out that the molar mass of the forward primer is 6500 g/mol and that of the reverse primer is 6100 g/mol. You need to prepare a 100 μM solutions of both forward and reverse primers.
You then received an enzyme whose concentration is 5 units/μL. You also received a buffer that has a 200 mM Tris-HCl (pH 8.4), 500 mM KCl. They call this a 10X buffer (10 times the working concentration of the buffer). Working concentration is the concentration of Buffer when the PCR reaction is setup. Using all these solutions they plan to setup a new PCR reaction with a final reaction volume of 50 μL.
The final concentration of the DNA in the reaction mixture is 1 ng/ μL. Calculate the volume of the DNA solution (that was prepared earlier), in μL, that needs to be added to reaction mixture.
An uncatalyzed reaction has a rate of 4. 2 × 10–7 sec–1. When an enzyme is added the rate is 3. 2 × 104 sec–1. Calculate the rate enhancement caused by the enzyme.
The rate enhancement caused by the enzyme is 7.6 x 10¹⁰.
The formula for the rate enhanced by the enzyme is given by catalyzed rate divided by the uncatalyzed rate
So we can write
Rate enhanced = catalyzed rate of the reaction/uncatalyzed rate of the reaction
The uncatalyzed rate of the reaction is given to be 4.2 x 10⁻⁷ sec⁻¹. The catalyze rate of the reaction is given to be 3.2 x 10⁴ sec⁻¹.
Now, putting all the values,
Rate enhanced = 3.2 x 10⁴/4.2 x 10⁻⁷
Rate enhanced = 7.6 x 10¹⁰
Hence, the rate enhanced is 7.6 x 10¹⁰.
To know more about rate of reaction, visit,
https://brainly.com/question/24795637
#SPJ4
In reaction 2 ICl (g) <=> I2 (g) + Cl2 (g) in a 625 ml container. Once equilibrium is reached, 0.0383g of I2 is found in the mixture. What is the value of Kc for the reaction?
2 ICl (g) <=====> I2 (g) + Cl2 (g)
Inicial: 0.682 g 0 0
(first we have only ICl, it doesn't react yet)
When reaction takes place: -2.x +x +x
(x is the amount that reacts,
e.g. -2 . x is the amount of ICl
that is consumed, for I2 and Cl2
we call +x because they are products)
Then in equilibrium:
First, we calculate molarity M
ICL = g/molecular mass . V(L) = 0.682 g/(162.35 g/mol . 0.625 L)=6.72x10^-3M
I2 = 0.0383 g / (253.80 g/mol . 0.625 L) = 2.41x10^-4 M
Remember everything is in the same volume
2 ICl (g) <=====> I2 (g) + Cl2 (g)
Inicial: 6.72x10^-3M 0 0
Reaction takes place: -2.x x x
Equilibrium: 6.72x10^-3M-2.x x x=2.41x10^-4M
[tex]Kc\text{ = }\frac{\lbrack Cl2\rbrack.\lbrack I2\rbrack}{\lbrack ICl\rbrack^2}=\text{ }\frac{x.x}{(6.72x10^{-3}M-2.x)2^{}}=\frac{2.41x10^{-4}M\text{.}2.41x10^{-4}M}{(6.72x10^{-3}M-2.2.41x10^{-4}M)^2}=8.64x10^{-6}[/tex]
Kc = 8.64x10^-6
Explain a friend notices that a nail that was left outside for a few months seems larger and heavier than it was before. He says it disproves the law of conservation of mass. Explain why he is wrong
According to the law of conservation of mass, the mass of the reactants and products before the reaction must be equal. He is mistaken since the process of rusting the nail is occurring, and the mass of the finished product is growing.
what is the law of conservation of mass?
According to the law of conservation of mass of reactants before the reaction must be equal to the mass of the product.
What is rusting?
Rusting is a form of oxidation. Rust is formed when iron combines with water and oxygen to generate hydrated iron oxide. Which is given by.
Iron is present in nails, which when coupled with oxygen produces ferrous oxide, which is heavier than iron. The mass of the reactants is therefore greater than the mass of the result.]
learn more about law of conservation of mass here:
https://brainly.com/question/28711001
#SPJ4
The amount of energy required to remove the outermost electron from a gaseous atom in the ground state is known as.
Answer: ionization energy
Explanation:
consider the reaction when aqueous solutions of chromium(iii) bromide and sodium hydroxide are combined. the net ionic equation for this reaction is:
CrBr3(aq) + 3NaOH(aq) = NaBr + Cr(OH)3s
How do you tell whether a solution is watery?
The most common way to represent it in chemical equations is to add (aq) to the appropriate chemical formula. For instance, the formula for a solution of table salt, or sodium chloride (NaCl), in water is Na +(aq) + Cl (aq).
What does "aqueous" in a solution mean?Water with one or more dissolved substances is known as an aqueous solution. An aqueous solution can contain dissolved gases, particles, or other liquids.
What is a blend of solutions?In a mixture called a solution, every component is well combined. Solutions can contain solids, liquids, and gases and are regarded as homogenous mixes. A solute and a solvent make up a solution. Any substance that dissolves in a solvent is referred to as a solute.
To know more about aqueous solutions visit:-
https://brainly.com/question/26856926
#SPJ4
How many grams of N2 are produced when 125g of NH3 reacts by the following? 4NH3+6NO--->5N2 +6H20
The number of grams of N2 that are produced when 125g of NH3 reacts as 4NH3+6NO--->5N2 +6H20 is 256.865 g
According to the stoichiometry, 4 moles of NH3 react to form 5 moles of N2 or 1 mole of NH3 reacts to form (5/4) moles of N2Molecular weight of NH3 = 17.031 g/molNumber of moles corresponds to 125 g of NH3 = (125 g) / (17.031 g/mol) = 7.339 molSince 1mole of NH3 reacts to form (5/4) moles of N2 ; 7.339 mol NH3 reacts to form (5/4) x (7.339) moles of N2 = 9.173 moleThe weight corresponds to 9.173 mole of N2 = (9.173 mole) x MW of N2 = (9.173 mole) x 28 g/mol = 256.865 gThe required weight is 256.865 gTo learn more about stoichiometry visit:
brainly.com/question/9743981
#SPJ4
Which will have the largest atomic radius?Group of answer choicesFF anionsamecannot determine
The atomic radius is the distance between the center of the nucleus of the atom and the farthest stable electron from it. When we have an anion it means that the charge of that atom is negative and it will have more electrons than its neutral state. Having more electrons will make the atomic radius of the anion larger.
So the answer will be that the F anion will have the largest atomic radius.
Which equation is used for calculating the enthalpy change of a reaction as estimated by bond enthalpies?.
The equation used for calculating the enthalpy change of a reaction as estimated by bond enthalpies is:
ΔH = ΣΔH (products) - ΣΔH (reactants)
Where ΔH is the bond enthalpy for each product and reactant.
This equation is used to estimate the enthalpy change of a reaction by adding up the bond enthalpies of the individual products and reactants. The overall enthalpy change of the reaction is then calculated by subtracting the bond enthalpies of the reactants from the bond enthalpies of the products. The enthalpy change of a reaction can be estimated by using the bond enthalpies of the reactants and products.
To solve problems on enthalpy visit : https://brainly.com/question/24170335
#SPJ4
coupled reactions: group of answer choices are reactions in which a endergonic reaction drives an exergonic reaction are reactions in which a exergonic reaction drives a spontaneous reaction are reactions in which a exergonic reaction drives an endergonic reaction are reactions in which a endergonic reaction drives a spontaneous reaction
Coupled reactions are those reactions in which exergonic reaction drives and endergonic reaction.
Coupled reactions is a process in which one reaction releases energy that energy initiates another reaction.
The reaction that releases energy is called exergonic reaction and the reaction that takes energy is called endergonic reaction. Coupling of reactions is a very important process specifically in biochemistry. Coupled reaction are closely associated to the cell metabolism one example of cell coupling reaction is the conversion of ADP to ATP.
An endergonic reaction a non-spontaneous reaction. While an exergonic reaction may or may not be spontaneous in nature.
To know more about coupled reactions, visit,
https://brainly.com/question/13778063
#SPJ4
predict if the reaction takes place, balance reactionPb + AgNO3a
This is a substitution reaction
How do we solve this question? I found B answer key says A
First, we write the reaction and balance it:
HNO2 (aq) + NH3 (aq) = NH4+ + NO2- (Balanced)
Data:
50 mL of 0.2 M HNO2
50 mL of 0.2 M NH3
In total, we have 100 mL, therefore, this solution between HNO2 and NH3 will be diluted in half. I mean: The concentration of HNO2 and NH3 will be 0.10 M
HNO2 (aq) + NH3 (aq) = NH4+ + NO2-
Initial 0.10 M 0.10 M 0 0
reacts -x -x +x +x
Equilibrium 0.10-x 0.10-x +x +x
Now, we write Kc:
[tex]\begin{gathered} Kc\text{ = }\frac{\lbrack NH4+\rbrack\lbrack NO2-\rbrack}{\lbrack HNO2\rbrack\lbrack NH3\rbrack}=\frac{x^2}{(0.10-x)^2} \\ 1x10^6=\frac{x^2}{(0.10-x)^2} \\ \sqrt{1x10^6}=\text{ }\lvert{\frac{x}{(0.10-x)}}\rvert \\ We\text{ get 2 values here:} \\ 1)+1000=\frac{x}{(0.10-x)} \\ and \\ 2)-1000\text{ = }\frac{x}{(0.10-x)} \end{gathered}[/tex]Values of x:
For 1) x = 0.0999
For 2)x = 0.1001
We choose number 1) x = 0.0999
Number 2 gives us a value higher than the initial values of concentration
Therefore, concentration in equilibrium of NH3 = 0.10-x =0.10 - 0.0999 = 0.00010M
Answer: A. 0.00010M
a 100.0 ml sample of 0.10 m ca(oh)2 is titrated with 0.10 m hbr. determine the ph of the solution after the addition of 100.0 ml hbr. a 100.0 ml sample of 0.10 m ca(oh)2 is titrated with 0.10 m hbr. determine the ph of the solution after the addition of 100.0 ml hbr. 7.00 12.70 12.00 2.00 1.30
According to the given statement the pH of the solution after the addition of 100.0 ml HBr is 1.3
The correct option is C.
What is the term "moles"?A moles of any chemical unit, including atoms, molecules, ions, and others.
Briefing:To calculate the moles of Ca(OH)₂ and HBr
Moles of Ca(OH)₂ = Concentration of Ca(OH)₂* Volume of solution
=0.10 m* 0.1 L= 0.01 mole
Moles of H Br = Concentration of H Br * Volume of solution = 0.10 M * 0.3 L = 0.03 mole
The balanced chemical reaction will be:
Ca(OH)₂+ 2HBr ⇔ CaBr₂ + 2H₂O
0.01 mole of Ca(OH)2 dissociate to give 0.01 mole of Ca2+ ion and 0.02 mole of ion
and
0.03 mole of HBr dissociate to give 0.03 mole of H+ ion and 0.03 mole of Br- ion
That means,
0.02 moles of OH- ion neutralize by 0.02 moles of H+ ion.
The excess moles of H+ ion = 0.03 - 0.02 = 0.01 mole
Total volume of solution = 100 + 100 =200 ml = 0.2 L
Now we have to calculate the concentration of H+ ion.
Concentration of H+ = Moles of H+/Total volume
Concentration of H+ = 0.01 mole/0.2L = 0.05 M
To calculate the pH of the solution.
pH = -log (H+)
pH = -log(0.05 M)
pH = 1.3
Therefore, the pH of the solution is, 1.3
To know more about Moles visit:
https://brainly.com/question/26416088
#SPJ4
The complete question is -
A 100.0 mL sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH of the solution after the addition of 100.0 mL HBr. A) 7.00 B)12.70 C) 1.3 D) 2.00
What does Hess's law state about the total enthalpy change for a reaction?OA. It depends on the reaction pathway.B. It can only be calculated from the equilibrium constant.C. It must be determined experimentally.D. It is independent of the reaction pathway.
Option D is correct. It is independent of the reaction pathway.
Explanations:What is Hess's law?Hesslaw states that the enthalpy change of a reaction does not change regardless whether the reaction takes place in a single or multiple reaction pathways.
This shows that the total entalpy change of a reaction does not depend on the reaction pathway.
Which elements will form cations and which will form anions
Sodium losses electrons to become Na+, thus forms a cation.
Fluoride gains electrons to become F-, thus forms an anion.
Iron losses electrons to become Fe2+, thus forms a cation.
Silver also losses electrons to be Ag+, thus forms a cation.
Why is the water stirred?
Stirring allows hot liquid to reach the surface much faster than unassisted convection
what is the element family name of copper?
Answer: Group 11
Explanation:
What is the difference between sigma and pi bonds in valence bond theory? what orbitals are involved in making these bonds?.
Sigma bonds are single bonds while the pi bonds are the double bonds according to the valence bond theory.
According to the valence bond theory, Sigma bonds are formed when the linear overlapping of the orbital take place while the pi bonds are form when to orbital overlap side by side with each other.
Sigma bonds allows the free rotation of the two atoms around the sigma bonds but pi bonds do not allowed that rotation of the atoms. The strength of the pi bonds is usually weaker than that of the Sigma.
bonds.
Sigma bonds are usually stronger then the pi bonds.
Atoms with a sigma bond tends to have a greater tendency to react chemically in comparison to the atoms with pi bonds.
Sigma bonds are formed by s orbitals and pi bonds are formed by p orbitals.
To know more about valence bond theory, visit,
https://brainly.com/question/28304669
#SPJ4
the formula for a molecule formed from n and cl would be?
The formula for a molecular formed form N and Cl would be N[tex]Cl_{3}[/tex].
According to the given configuration of Nitrogen(N) and Chlorine(Cl) we have,
N needs 3 electrons and Cl needs 1 electron to complete their octet.
Therefore, one atom of N will combine with three atoms of Cl.
So the molecular formula of the compound formed will be N[tex]Cl_{3}[/tex].
The addition reaction is:
N + Cl -------> N[tex]Cl_{3}[/tex]
(nitrogen) (chlorine) ( Nitrogen(III) chloride)
Therefore the formula for a molecule formed from N and Cl would be N[tex]Cl_{3}[/tex].
To know more about the chemical formula refer to the link given below:
https://brainly.com/question/11574373
#SPJ4
Convert 1.27 moles of magnesium carbonate to formula units.
We have the number of moles of magnesium, now we will use the Avogadro number to determine formula units:
[tex]\text{Avogadro number = }6.022\text{ }\times10^{23}[/tex]Avogadro number says that one mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). Does not matter which is the substance, always 1 mol will be 6.022 x 10^23 formula units.
We have 1.27 moles so we will have:
[tex]1.27\text{ mol }\times\text{ }\frac{\text{6.022}\times10^{23}fu\text{.}}{1\text{ mol}}\text{ =}7.65\text{ }\times10^{23}formula\text{ units}[/tex]1.27 moles of magnesium are equivalent to 7.65 x 10^23 formula units
a sample of solid ammonium chloride was placed in an evacuated chamber, and then heated causing it to decompose according to the following reaction: nh4cl(s) nh3(g) hcl(g) in a particular experiment the pressure of nh3(g) in the container was found to be 2.3 atm. calculate the value of kp for the decomposition of nh4cl(s) at this temperature.
The value of the Kp (equilibrium constant) of the reaction is 4.84.
First let us write the balanced chemical reaction of decomposition,
NH₄Cl(s) ⇔ NH₃(g) + HCl(g)
The initial pressure of the container is zero.
On reaching equilibrium, let us assume that the pressure of HCl and NH₃ is found to be x, while the equilibrium temperature is 2.3 atm.
We know,
Kp = P[NH₃]¹P[HCl]¹
Where,
P[NH₃] and P[HCl] is the pressure of the gases at equilibrium.
So, now putting all the values,
Kp = [x][x]
Kp = [x]²
Here, it is given that the equilibrium pressure is 2.3, so, we can put x = 2.3,
So, putting all the values,
Kp = [2.3]²
Kp = 4.84
Hence, the Kp value of the reaction is 4.84.
To know more about Kp value, visit,
https://brainly.com/question/17082550
#SPJ4
A 25. 0 ml sample of 0. 50 m hno2 is titrated with 0. 25 m koh. What is the ratio of conjugate base to weak acid, at the point where 10. 0 ml of koh has been added during the titration? ka for nitrous acid is 5. 6 x 10-4.
The ratio of conjugate base to weak acid is 0.734.
25ml of HNO2 is used when the titration occurs, so the total volume is 50ml of KOH which will be 0.075 M pH if equivalent points are the pH of this solution of KOH 0.075.
[[tex]OH^{-}[/tex] ] = [tex]\sqrt{\frac{K_{w} }{K_{\alpha } } * C_{s} }[/tex]
= [tex]\sqrt{\frac{1 *10^{-14} }{5.6 *10^{-4} } * 7.5 *10^{-2}[/tex]
= [tex]\sqrt{1.339 * 10^{-12} }[/tex]
= 1.157 × [tex]10^{-6}[/tex]
pOH = 5.93
pH = 8.07
Ratio = 5.93/ 8.07
= 0.734
Therefore the ratio of conjugate base to weak acid is 0.734.
To know more about the conjugate base and acid refer to the link given below:
https://brainly.com/question/22514615
#SPJ4
Which number corresponds to the number in
scientific notation?
3.21 x 10^4 kg= kg
2.0 x 10^-5L= L
The number that corresponds to the numbers in scientific notation is as follows:
3.21 × 10⁴kg = 32100kg2.0 × 10-⁵L = 0.00002LWhat is scientific notation?Scientific notation is a method of writing, or of displaying real numbers as a decimal number between 1 and 10 followed by an integer power of 10.
It is an alternative format of such a decimal number immediately followed by E (exponential) and an integer. For example, the number 0.00236 can be written in scientific notation as 2.36 × 10-³ or as 2.36E-3.
In the case of the above example, 2.36 is the integer while E-03 is the exponential.
This means we can derive the number depicted by the scientific notation as given in the main answer part of this answer.
Learn more about scientific notation at: https://brainly.com/question/18073768
#SPJ1
Answer: Look at the picture below - Hope this helps <33
Explanation:
What is solute?
A. The mixture of one substance dissolved in another
B. The substance that is dissolved in another substance
C. The remaining substance that does not become dissolved
D. The substance that dissolved another substance
Answer:The substance that is dissolved in another substance
Explanation:
The solute is what is dissolved in a solvent, and the result is a solution.
Answer:
B
Explanation:
cuz solute is the minor component in a solution, dissolved in the solvent so it is a substance that dissolve in solvent
in my opinion the second idea is describe solute
solvent a gives rf values for the two unknown dyes of 0.28 and 0.67. solvent b gives rf values for the same two unknown dyes of 0.31 and 0.83. based on this, would you choose solvent a or solvent b to separate the dye using your silica gel column? what did you base your decision on?
Solvent a gives RF values for the two unknown dyes of 0.28 and 0.67. solvent b gives RF values for the same two unknown dyes of 0.31 and 0.83. based on this, we would choose Solvent (A) because it shows a larger separation of dyes.
What is the solute's Rf value?Rf values are always between 0 and 1, with 1 being the other extreme where the solute is so soluble that it moves as far as the solvent because the solvent front is always larger than the distance traveled by the solute. Since RF values are a ratio of distances, they lack units.
Why do we use several solvents to identify dyes?Therefore, the identification is more succinct the more diverse solvents (or mixes) are utilized, the more RF values are produced. The process of identification involves comparing the unknown sample's RF values to those of several known dyes.
Learn more about RF values here:-
https://brainly.com/question/26639192
#SPJ4
hen gas evolution has become very slow, heat the solution gently (but do not boil) and allow it to cool. decant the liquid. if zinc particles are still present, add a few ml of concentrated hcl to the beaker, let react and decant again. repeat until all zinc is gone. (2pts) what gas is formed in this reaction?
Hydrogen (H2) gas will be formed. Because Zinc particle react with Conc. Hcl and formed Zinc -chloride (ZnCl2) and Hydrogen (H2) gas.
Zn + 2Hcl → Zncl2 + H2
Standard reduction potential of Zu2+ / Zn= -0.76 volt
Standard reduction potential of H+ / H2 = 0.00 volt
so, we know higher the reduction potential higher will be the oxidising properties. So Here, Zinc (Zn) will ве oxidize to Zn+ & H+ will be reduced to hydrogen (H2) gas.
learn more about hydrogen here
https://brainly.com/question/16979348
#SPJ4
A photon is emitted when an electron drops from n = 5 to n = 1:
a. Calculate the wavelength
b. Calculate the frequency
c. Calculate the energy
!!!!ANSWER ALL!!! !!!PLEASE HELP ASAP!!!!
The photon has the following parameters;
wavelength - 9.5 * 10^-8 mFrequency - 3.2 * 10^15 HzEnergy - 2.1 * 10^-17 JWhat is the Bohr model?We know from the Bohr model that energy is given off when an electron falls from a higher to a lower energy level and we can work this out by the use of the Rydberg equation.
We know that;
1/λ = RH(1/[tex]n_{2} ^{2}[/tex] - 1/[tex]n_{1} ^{2}[/tex])
Given that;
RH = Rydberg constant
Then;
1/λ = 1.097 * 10^7(1/1^2 - 1/(5)^2)
λ = 9.5 * 10^-8 m
The frequency is obtained from;
c = λ f
f = c/λ
f = 3 * 10^8 m/s/9.5 * 10^-8 m
f = 3.2 * 10^15 Hz
Energy is obtained from;
E = hf
E = 6.6 * 10^-34 Js * 3.2 * 10^15 Hz
E = 2.1 * 10^-17 J
Learn more about photon:https://brainly.com/question/20912241
#SPJ1
a 1.072 g sample of helium gas is found to occupy a volume of 8.446 l when collected over hexane at 25.0 c and 738.6 mmhg atmospheric pressure. what is the vapor pressure of hexane?
Hexane has a vapor pressure of 148.84 mmHg.
What is helium?After hydrogen, helium is the element found in the universe in the greatest abundance. It is an inert gas with special qualities that is both colorless and odorless. Why is helium so special? Helium is the least stable element of all; it won't burn or interact with other elements.
Helium is utilized to create an inert protecting atmosphere for the production of fiber optics and semiconductors as well as for arc welding because of how little it reacts. Helium can also be used to inflate vehicle airbags after an accident since it diffuses quickly and can be utilized to find flaws, such as those in automotive air conditioning systems.
Using ideal gas equation, the pressure of He(g) deposited over hexane is computed.
Given -
He has a mass of 1.07 g.
Number of mols of Him (gram) = 1.072 g/4.00 g/mol
= 0.268 mol
Thus -
Pressure is equal to (0.268 mol) (0.0821 L/mol/mol.K) (298 K) / (8.446 L)
= 0.776 atm
760 mmHg/1 atm = (0.776 atm) or pressure in mmHg.
= 589.7 mmHg
Vapor pressure is thus equal to 738.6 mmHg minus 589.7 mmHg.
= 148.84 mmHg
To know more about helium visit:
https://brainly.com/question/11993868
#SPJ4
Draw the lewis structure for no2-. How many single bonds, double bonds, triple bonds, and lone pairs of electrons are on the central atom when considering a single contributing structure? ignore the averaging effects of resonance.
The NO2 Lewis structure has a total of 17 valence electrons
What is resonance?
The delocalization of electrons within molecules is described by resonance, a mental exercise found in the Valence Bond Theory of Bonding. Construction of several Lewis structures that, when put together, depict the entire electrical structure of the molecule is required.
There are 17 valence electrons in total in the NO2 Lewis structure. An odd number of valence electrons in a Lewis structure is uncommon. As a result, we'll make an effort to get the core Nitrogen (N) atom as close to an octet as we can. It will only have 7 valence electrons as a result.
Use the periodic table to calculate the total number of valence electrons present in the NO2 molecule. Once we are aware of the number of valence electrons present in NO2, we can arrange them so that each atom's outer shell is filled.
There are a total of 17 valence electrons in the Lewis structure of NO2. NO2 is nitrogen oxide.
Learn more about Lewis structure from given link
https://brainly.com/question/28353159
#SPJ4
What is the charge on the potassium ion?Select one:a.1 +b.1 -c.2 -d.2 +
The charge on the potassium ion is 1+. So, Option A is the correct answer from the given options.
What does ionic charge mean?A positive or negative charge on an atom is known as an ionic charge. The atom's electron arrangement and the quantity of valence electrons affect the charge. Elements in the same group on the periodic table have an equal amount of valence electrons. Therefore, they often have the same ionic charge.We must ascertain the charge carried by the potassium ion.
Being a group 1 element, potassium will produce an ion with a positive charge.
Since potassium achieves an extremely stable noble gas electrical structure after losing one electron, this element possesses a steady +1 valency.
As a result, the potassium ion has a 1+ charge. The right response from the available alternatives is thus Option A.
Learn more about valence electrons here:
https://brainly.com/question/371590
#SPJ9
The bonding within the molecules or compounds directly affects its solubility. The_______ bonds within hexane, CH14. prevent the compound from being dissolved by a solvent like water , H₂O.A) shared ionicB) polar covalentC) nonpolar covalentD)Electrostatic metallic
Water is a polar substance. Polar solvents dissolve polar substances. Now, the bond between carbon and hydrogen is a covalent bond, because the electronegativity difference between these two elements is less than 1.7.
Therefore, the low solubility of hexane is due to the fact that hexane is nonpolar with covalent bonds.
Answer: C) Nonpolar covalent
