We can draw three inequivalent Lewis structures for the sulfite ion , SO32- . The concepts of formal charge and electronegativity can help us choose the structure that is the best representation. 1. Assign formal charges to the elements in each of the structures below. Note: Count oxygen atoms starting from the left for each structure. A B C Formal Charge S O1 O2 O3 2. The best Lewis structure for SO32- is
Answers
Answer:
1. The Lewis structure for SO32- is structure B.
Note: See attachment for complete question and for formal charges of the atoms in each structure.
Explanation:
The formal charge of an atom in a molecule is the assumed charge the atom would have if the electrons in the bonds were evenly distributed between the atoms.
Formal charge can be calculated as follows:
Formal charge = number of valence electrons - ( number of non-bonding electrons + ½ bonding electrons)
Formal charges are used to determine the best possible Lewis structure of a molecule or ion. The following rules are applied:
1. A structure in which all formal charges are zero is preferable to one in which some formal charges are not zero.
2. If non-zero formal charges must exist in the structure , the arrangement with the smallest non-zero formal charges is most preferred.
3. Lewis structures are preferable when adjacent formal charges are zero or of the opposite sign.
4. The structure with the negative formal charges on the more electronegative atoms is preferred among other structures of the molecule or ion.
From the above rules, structure B has negative charges on the more electronegative oxygen atoms and has more zero formal charges on the atoms. The central atom, sulfur also has a zero formal charge.
Related Questions
US
What is the percent of H in
NH3?
(H = 1.008 amu, N = 14.01 amu)
[?]%
Answers
Answer:
17.6
Explanation:
Answer is explained above
It would be 17.6%.
What can you do differently for
the last half of the year in science? Whether it is
improving study skills, turning work in on time
Answers
Answer:
I would say, what helps me is really paying attention in class and asking questions, also making sure you study for upcoming test's and quizzes and completely assingments on time
Explanation:
If phosphofructokinase experienced a mutation that interfered with substrate binding, then what other enzyme is going to be most immediately impacted in terms of accessing substrate?
A. aldolase
B. fumarase
C. glucolactonase
D. hexokinase
Answers
Answer: A. aldolase
Explanation:
Phosphofructokinase, is an enzyme which is vital in the regulation of fermentation. It is involved in the glycolysis process.
When it experiences a mutation that was being interfered with the substrate binding, we should note that the enzyme that is going to be most immediately impacted in terms of accessing substrate is aldolase.
6. Primary succession usually occurs after which catastrophic events?
a.) Volcanic eruptions burning down a forest
5. Hurricanes flooding a forest
c. Tomadoes uprooting trees leaving behind the soil
d. Glaciers moving revealing bare rock underneath
Answers
Answer: d. Glaciers moving revealing bare rock underneath
Explanation:
Primary succession is what happens when living things colonise an area that was previously uncolonized because it had been destroyed or hadn't been created yet.
When glaciers move on from areas and expose the bare rock underneath, these areas are new and so primary succession will take place as living things begin to colonize this new area.
The density of aluminum is 2.70 g/cm^3. A square piece of aluminum foil, 22.86 cm on a side is found to weigh 2.568 g. What is the thickness of the foil, in millimeters?
Answers
Answer:
0.00182 cm
Explanation:
Area of the aluminum foil = 22.86 cm ×22.86 cm = 522.58 cm^2
Density = mass/area × thickness
Density × area × thickness = mass
Thickness = mass/ Density × area
Thickness = 2.568 g/2.70 g/cm^3 × 522.58 cm^2
Thickness= 0.00182 cm
aqueous hydrochloric acid HCl will react with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid water H2O. Supposed 6.93 g of hydrochloric acid is mixed with 2.4 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 2 significant digits. g
Answers
Answer:
Explanation:
HCl + NaOH = NaCl + H₂O.
1 mole 1 mole 1 mole 1 mole
6.93 g of hydrochloric acid = 6.93 / 36.5 = .189 mole of HCl
2.4 g of NaOH = 2.4 / 40 = .06 mole of NaOH
NaOH is in short supply so it is the limiting reagent .
1 mole of NaOH reacts with 1 mole of HCl to give 1 mole of Water
.06 mole of NaOH will react with .06 mole of HCl to give .06 mole of water
Water formed = .06 mole
= .06 x 18 = 1.08 g
= 1.1 g
Can I please get help with this question ♂️?
Answers
Answer:
1.50 moles of POH or Potassium Hydroxide.
Explanation:
First of all, find the substance formula
The substance formula of Potassium Hydroxide is
KOH
Second of all, if you want to convert from grams to moles, you use molar mass of KOH
Third of all, find the molar mass of KOH.
K = 39.1 amu
O = 16.0 amu
H= 1.0 amu
Potassium has 1 atom, oxygen has 1 atom, and hydrogen has 1 atom.
So do this:
39.1(1) + 16.0(1) + 1.0(1) = 56.1
The molar mass of KOH is 56.1 g/mol.
Fourth of all, use dimensional analysis to show your work.
84.20 grams of KOH * 1 mol/56.1 g/mol
The moles will cancel out.
84.20 divided by 56.1 = 1.500892166
But I have to round my answer to two digits after the decimal points instead of using sig figs.
So I round to the hundredths place
1.500892166 = 1.50
So the final answer is 1.50 moles(don't forget the units) of POH.
Hope it helped!
Complete the chemical equation and name the type of reaction taking place.
In the problem below, the ions have the following charges: Γ-2 and φ-2
H2Γ + φ(OH)2 -->
PLEASE HELP
Answers
If a wave is traveling at 36 m/s and has a frequency of 6 Hz, what is its wavelength?
Answers
Answer:
wave length=speed*frequency
=36*6
=216 m
PLS HELP GIVING 100 PTS EASY SCIENCE HELP PLS
Answers
Answer:
B hope it helps
Explanation:
7. The root structures on peanut plants that restore soil nutrients and fix nitrogen
Answers
Answer:
Like other legumes, peanut plants improve the soil by adding nitrogen, even as they grow tasty, nutritious nuts for this season's harvest. But peanuts need help as they take nitrogen from the air and "fix" it into the soil via their root systems.
Explanation:
amount moles 167 g of nitrogen
Answers
The transfer of heat by electromagnetic waves *
O Conduction
O Convection
O Radiation
Answers
Answer:
radiation
Explanation:
hope this helps!
The oldest known flower lived 120, million years ago. Is that a measured or exact number?
Answers
Answer:
measured
Explanation:
no way can they pin point exactly when something lived when its in the millions
how long does crushed candy dissolve in a warm water
Answers
Answer:
Because of reaction between solid and liquid
Answer:
shouldn't take that long i would say from 30 to 40 minutes bc its melting in warm water its turning from a solid to a liquid.
Explanation:
Which of the following is NOT true about one mole?
the number of atoms in 1 mole of carbon equals the number of atoms in 1 mole of boron
O 12 g of carbon equals one mole of carbon atoms
the mass of 1 mole of carbon atoms equals the mass of 1 mole of boron atoms
one mole contains 6.02 x 10
23
particles
Answers
Mass=molesx molar mass
And the molar masses of these two elements are different so their masses aren’t equal
The number of atoms in 1 mole of carbon equals the number of atoms in 1 mole of boron is false because the molar mass of carbon is different from that of boron. Option A is correct.
The number of moles of an element is expressed as the ratio of the mass of the substance to its molar mass.Moles = Mass/Molar massThis shows that the number of moles of the substance is dependent on the molar mass of the substance.
From the listed option the number of atoms in 1 mole of carbon equals the number of atoms in 1 mole of boron is false because the molar mass of carbon is different from that of boron
Learn more on moles here: https://brainly.com/question/24256751
how will you ensure your server is protected from data hacks?
Answers
Firewalls are used to filter network traffic and are available as standard system software on most operating systems. Limit the openings hackers have to your server.
Answer:
Establish and Use a Secure Connection
Use SSH Keys Authentication
Secure File Transfer Protocol
Secure Sockets Layer Certificates
Use Private Networks and VPNs
Explanation:
How many atoms are present in 0.035 moles?
Answers
Answer:
[tex]2.11x10^{22}atoms[/tex]
Explanation:
Hello!
In this case, considering the Avogadro's number, which relates the number of particles and one mole, we can infer that 1 mole of any element contains 6.022x10²³ atoms as shown below:
[tex]\frac{6.022x10^{23}atoms}{1mol}[/tex]
Thus, we compute the number of atoms in 0.035 moles as shown below:
[tex]atoms=0.035mol*\frac{6.022x10^{23}atoms}{1mol} \\\\atoms=2.11x10^{22}atoms[/tex]
Best regards!
A gas mixture in a rigid container has a total pressure of 2.5 atm. One gas, lets call it X, has 0.85 moles and accounts for 1.2 atm of pressure. What is the mole fraction of the other gases (all gases that are not X) in the container?
Answers
The mole fraction of the other gases : 0.52
Further explanationGiven
P tot = 2.5 atm
P x = 1.2 atm, n = 0.85 moles
Required
mole fraction
Solution
P tot = P gas X + P other gases
mol fraction = mol x : mol total
P gas X = mol fraction gas X x P total
1.2 atm = mol fraction gas X x 2.5 atm
mol fraction gas X = 0.48
mol fractionof the other gases = 1 - 0.48 = 0.52
Or we can use
P other gases = 2.5 - 1.2 = 1.3 atm
mol fraction the other gases = 1.3 : 2.5 = 0.52
Select the correct balanced equation for the combustion of methane.
CH4 + 02 -> CO 2 + H2O
Answers
Answer:
A: CH4 + 2O2 -> CO2 + 2H2O
Explanation:
CH4 + O2 -> CO2 + H2OCount how many elements they are in all molecules for the reactants and for the products.
For the reactants:C = 1 element
H = 4 elements
O = 2 elements
For the products:C = 1 element
O = 2 elements
H = 2 elements
O = 1 element
2 oxygen atoms + 1 oxygen atoms = 3 oxygen atoms total on the products side.
To balance this equation, we need to add 2 more elements of hydrogen and 2 more elements of oxygen. Therefore, we add a 2 to the coefficient of O2 for the reactants side and add a 2 to the coefficient of H2O for the products side.
Now let us try it.
CH4 + 2O2 -> CO2 + 2H2OCount how many elements they are in all molecules for the reactants and products.
For the reactants:C = 1 element
H = 4 elements
O = 4 elements
For the products:C = 1 element
O = 2 elements
H = 4 elements
O = 2 elements
2 oxygen atoms + 2 oxygen atoms = 4 oxygen atoms total on the products.
All of the elements are balanced.
So the final answer is A: CH4 + 2O2 -> CO2 + 2H2OHope it helped!
How many moles are in 56.4 grams of AlF3
Answers
Answer: 0.671614483912211
Explanation: A mole is 6.02214076×1023 (also known as the Avogadro number) I hope this helps!
In the following acid-base the reaction HCI is
A. Acid
B. Conjugate acid
C. Conjugate base
HCl(g) + H2O(l) →H30+(aq) + Cl-(aq)
Answers
Suppose that for a hypothetical reaction: A2(g) + 3B2(g) 2AB3(g) It is determined that at a certain temperature the equilibrium concentrations are [A2] = 0.0055, [B2] = 0.763 and [AB3] = 7.6×10-4. Calculate the numerical value of K for the reaction.
Answers
Answer:
The numerical value of K for the reaction is 2.36*10⁻⁴
Explanation:
A chemical equilibrium is a reaction that is never completed, since it occurs simultaneously in both directions (the reactants form products, and in turn, these form reactants again). In other words, it is a dynamic balance. When the concentrations of each of the substances involved (reactants or products) stabilize, that is, they are spent at the same rate as they are formed, chemical equilibrium is reached.
The equilibrium constant (Kc) is expressed as the ratio between the molar concentrations of reactants and products. Its value in a chemical reaction depends on the temperature, so this must always be specified.
Being:
aA + bB ⇄ cC + dD
then the constant Kc is:
[tex]Kc=\frac{[C]^{c} *[D]^{d} }{[A]^{a} *[B]^{b} }[/tex]
In the case of the reaction:
A₂(g) + 3 B₂(g) ⇒ 2 AB₃(g)
The constant Kc is:
[tex]Kc=\frac{[AB_{3} ]^{2} }{[A_{2} ] *[B_{2} ]^{3} }[/tex]
Being:
[AB₃]=7.6*10⁻⁴[A₂]= 0.0055[B₂]= 0.763and replacing, you get:
[tex]Kc=\frac{(7.6*10^{-4} )^{2} }{0.0055 *(0.763)^{3} }[/tex]
Kc=2.36*10⁻⁴
The numerical value of K for the reaction is 2.36*10⁻⁴
Which of these can be found in a plant cell, but not in an animal cell?
Answers
Answer:
Hey!
Explanation:
I dont know the answers but Cell walls and Cloroplasts are only in plant cells. I hope this helps!
what does the ideal gas law describe
Answers
Answer: the law that the product of the pressure and the volume of one gram molecule of an ideal gas is equal to the product of the absolute temperature of the gas and the universal gas constant.An ideal gas is a gas that conforms, in physical behaviour, to a particular, idealized relation between pressure, volume, and temperature called the ideal gas law
What do u notice about the molecules before and after the chemical reaction
Answers
Explanation:
In a chemical reaction, the atoms and molecules produced by the reaction are called products.
In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed.
In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
7.
Use the reaction below for the reaction of dicyanoacetylene with
ozone to produce carbon monoxide and nitrogen.
3C4N2(8) + 403(g) → 1200(8) + 3N2(g).
What volume of CO is produced when 1.20 L of C4N2 reacts?
a 0.300 L CO
b 3.60 L CO
C 14.4 L CO
d 4.80 L CO
Answers
Answer:
D
Explanation:
The volume of carbon monoxide is produced when 1.20 L of dicyanoacetylene reacts is
What is stoichiometry?Stoichiometry of any reaction tells about rhe relative amount of substance present before and after the completion of any chemical reaction.
Given balanced chemical reaction between dicyanoacetylene and ozone to produce carbon monoxide and nitrogen is:
3C₄N₂ + 4O₃ → 12CO + 3N₂
From the stoichiometry of the reaction it is clear that:
3 liters of C₄N₂ = produces 12 liters of CO
1.20 liters of C₄N₂ = produces 12/3×1.20=4.8 liters of CO
Hence option (d) is correct i.e. 4.8 liters.
To know more about stoichiometry, visit the below link:
https://brainly.com/question/16060199
Marine chemist exam in the mass percent composition of manganese sulfide compound from ocean floor he determined that 60.2% of this compound is sulfur determine the mole ratio between manganese and sulfur
Answers
Explanation:
Let the mass of the compound be 100g.
There are 60.2g of sulfur.
Moles of sulfur
= 60.2g / (32.07g/mol) = 1.877mol
There are 100g - 60.2g
= 39.8g of manganese.
Moles of manganese
= 39.8g / (54.94g/mol) = 0.724mol
Mole ratio of manganese to sulfur
= 0.724mol : 1.877mol = 1 : 2.5.
atom ,molecule, proton neutron electron, elements/compounds from SMALLEST to the BIGGEST.
Answers
Answer:
Electron,Protons/Neutrons,Atom,Molecule
Explanation:
please complete work
Calculate the molar mass of ammonium salfate:(NH4)2SO4
Answers
Answer:
132.14 g/mol
Explanation: