Answers
The Lewis structure for HNC (hydrogen isocyanide) consists of a hydrogen atom bonded to a nitrogen atom, which is then bonded to a carbon atom. The formal charges assigned to each atom are H: 0, N: 0, and C: -1.
The Lewis structure for HNC (hydrogen isocyanide): Determine the total number of valence electrons,
1. Determine the total number of valence electrons:
Hydrogen (H) has 1 valence electron.
Nitrogen (N) has 5 valence electrons.
Carbon (C) has 4 valence electrons.
Total valence electrons = 1 (H) + 5 (N) + 4 (C) = 10 valence electrons
2. Place the least electronegative atom (hydrogen) in the center and connect it to the more electronegative atoms (nitrogen and carbon) using single bonds.
H
|
N - C
3. Fill the remaining valence electrons around each atom to complete their octets (except hydrogen, which only needs 2 electrons).
H: 2 electrons (1 bond)
N: 4 electrons (1 bond) + 4 electrons (lone pairs) = 8 electrons (full octet)
C: 4 electrons (1 bond) + 4 electrons (lone pairs) = 8 electrons (full octet)
H
|
N - C
: :
4. Check if all atoms have achieved their octets. In this case, they have.
The Lewis structure for HNC is:
H
|
N - C
: :
Let's assign formal charges to each atom. The formal charge of an atom is calculated by comparing the number of valence electrons an atom has in a Lewis structure with the number of electrons it "owns" in a molecule.
To calculate the formal charge, we use the formula:
Formal charge = Valence electrons - (Non-bonded electrons + 1/2 * Bonded electrons)
For each atom in HNC:
H: Formal charge = 1 - (0 + 1/2 * 2) = 0
N: Formal charge = 5 - (4 + 1/2 * 2) = 0
C: Formal charge = 4 - (4 + 1/2 * 2) = -1
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Related Questions
In the disproportionation reaction CI2 + H2Omc021-1.jpgHCIO + HCI, what describes the oxidation states of the substance Cl?
Cl has an oxidation number of 2 in Cl2. It is then reduced to Cl with an oxidation number of 1 in both HCl and HClO.
Cl has an oxidation number of –1 in Cl2. It is then oxidized to Cl with an oxidation number of 1 in both HCl and HClO.
Cl has an oxidation number of 0 in Cl2. It is then reduced to CI- with an oxidation number of –1 in both HCl and HClO.
Cl has an oxidation number of 0 in Cl2. It is then reduced to CI- with an oxidation number of –1 in HCl and is oxidized to Cl+ with an oxidation number +1 in HClO.
Answers
Oxidations states:
The oxitation state of Cl2 = 0, because the oxidation state of an atom alone or a molucule with one kind of atom is always 0.
The oxidation state of Cl in HClO is +1 because the oxidation state of H is + 1, the oxidation state of O is - 2, and the molecule is neutral, so +1 + 1 - 2 = 0
The oxidation state of Cl in HCl is - 1, because the oxidation state of H is +1 and the molecule is neutral, so - 1 + 1 = 0.
Also, you shall remember that when an atom increases its oxidation state is is oxidized and when an atoms reduces its oxidations state it is reduced.
With that you conclude that the right option is the last statement: Cl has an oxidation number of 0 in Cl2. It is then reduced to CI- with an oxidation number of –1 in HCl and is oxidized to Cl+ with an oxidation number +1 in HClO.
Answer:
Its CCCCCCCC
Explanation:
your welcome please give 5 starts and like bc this is right i got 100% in the final text over the second semester
The scientific method is one application of critical thinking.true or false
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71% of earths surface is covered in water. how much of it is fresh water and how is it distributed
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3% icebergs, lakes, rivers, and ground water
when a rock is altered by extreme heat and pressure, what type of rock is the result?
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Calculate the work of expansion accompanying the complete combustion of 1.0 g of glucose to carbon dioxide and (a) liquid water, (b) water vapor at 20oc when the external pressure is 1 atm.
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a) 0 is the work of expansion accompanying the complete combustion of 1.0 g of glucose to carbon dioxide b) -81.12 J is the work of expansion.
When a force is applied to an item and the object is moved in the direction of the force, the energy transfer known as "work" takes place. The fundamental idea of work has applications in both physics and chemistry, particularly in the context of thermodynamics.The expansion or compression of a gas, which can take place in a variety of processes including isothermal (constant temperature), adiabatic (no heat exchange), and isobaric (constant pressure) processes, is frequently linked to work in thermodynamics.
a) w = -Pext(final pressure- initial pressure)
= -Pext(nfRT/Pf- niRT/Pi)
since initial and final number of moles is same
Work of expansion is zero.
b)moles of water is calculated as:
=1g glucose/180 g/mol×6 mol water/1 mol glucose
=[tex]3.33 \times 10^{-2}[/tex] mol of water
W =- nRΔT
= [tex]3.33 \times 10^{-2}[/tex]×8.31×293.15
=-81.12 J
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Which common mineral is most resistant to both chemical and mechanical weathering?
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If you remove one neutron from helium, the remainder is what element?
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In maintaining proper acid-base balance, protein acts as
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The vapor pressure of benzene is 100.0 mmhg at 26.1°c. calculate the vapor pressure of a solution containing 28.2 g of camphor (c10h16o) dissolved in 94.8 g of benzene. (camphor is a low-volatility solid.
Answers
To calculate the vapor pressure of a benzene solution with camphor, use Raoult's Law considering the negligibility of camphor's vapor pressure and determine the mole fraction of benzene.
Explanation:Calculating Vapor Pressure of a Solution
To calculate the vapor pressure of a solution containing 28.2 g of camphor (C10H16O) dissolved in 94.8 g of benzene, we can use Raoult's Law. This law states that the partial vapor pressure of a solvent in a solution is equal to the vapor pressure of the pure solvent times the mole fraction of the solvent in the solution. The formula is P1 = X1 * P1o, where P1 is the vapor pressure of the solvent in the solution, X1 is the mole fraction of the solvent, and P1o is the vapor pressure of the pure solvent.
First, we need to calculate the mole fraction of benzene in the solution. To do that, we must find the moles of both camphor and benzene using their respective molar masses (152.23 g/mol for camphor and 78.11 g/mol for benzene). After calculating the moles, we can find the mole fraction of benzene (X1) by dividing the moles of benzene by the total moles of both compounds. We can then apply the equation above to find the new vapor pressure of the benzene in the solution (vapor pressure of a solution).
Note that this calculation assumes camphor has negligible vapor pressure, which is a reasonable assumption given it is a low-volatility solid. The answer will be in mmHg because that is the unit given for the vapor pressure of pure benzene.
Which of the following molecules would have the lowest boiling point?
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The O'Keefe's have 75 gallons of cucumbers for pickling. The 1.5 M KOH solution costs $3.50 per liter, 9 M H2SO4 solution costs $8 per liter, and ethanol costs $20 per liter. A 50 g jar of alum from the grocery store costs $5.79. Do you think it’s worth the time and trouble for Richard and Diane to make their own alum from discarded aluminum cans? Explain your answer showing all calculations.
Answers
To determine if it's worth the time and trouble for Richard and Diane to make their own alum from discarded aluminum cans, we can compare the cost of making alum with the cost of buying it from the grocery store. To calculate the cost of making alum, we need to determine the cost of sulfuric acid. By calculating the amount of alum that can be made from the given quantity of cucumbers, we can compare the cost of making alum versus buying it.
Explanation:Richard and Diane are considering making their own alum from discarded aluminum cans. In order to determine if it's worth the time and trouble, we need to compare the cost of making alum with the cost of buying it from the grocery store.
To make alum, we need aluminum cans and a source of sulfuric acid. The cost of the aluminum cans is not provided in the question, so we will focus on the cost of sulfuric acid. From the information given, we know that the 9M H2SO4 solution costs $8 per liter.
We need to calculate the amount of alum that can be made from the given quantity of cucumbers. From the equation:
2 KOH(aq) + H2SO4(aq) → K2SO4(aq) + 2 H2O(l)
We can see that we need twice as many moles of KOH as H2SO4. Using the molarity and quantity of KOH solution mentioned in the question, we can calculate the number of moles of KOH:
Molarity of KOH solution = 1.5 M = 1.5 mol/L
Amount of KOH solution needed = x L (unknown)
Number of moles of KOH = (1.5 mol/L) * x L = 1.5x mol KOH
Since we need twice as many moles of KOH as H2SO4, we can determine the number of moles of H2SO4:
Number of moles of H2SO4 = 0.75x mol H2SO4
Now we can calculate the cost of H2SO4 needed to make the alum:
Cost of H2SO4 = ($8/L) * (0.75x L) = $6x
On the other hand, the cost of buying a 50 g jar of alum from the grocery store is given as $5.79.
Based on these calculations, we can compare the cost of making alum versus buying it:
If $6x (cost of making alum) is less than $5.79 (cost of buying alum from the grocery store), then it would be worth the time and trouble for Richard and Diane to make their own alum from discarded aluminum cans.
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Richard and Diane should calculate the cost of making their own alum from discarded aluminum cans to determine if it's worth the time and trouble.
Explanation:Richard and Diane should calculate the cost of making their own alum from discarded aluminum cans to determine if it's worth the time and trouble. First, they need to calculate the cost of materials for making alum. They can find the cost of KOH, H2SO4, and ethanol per liter and the cost of alum per jar. Then, they need to calculate the volume of alum solution needed for pickling cucumbers and determine the cost of the required amount of alum solution by multiplying the volume by the cost per jar. Comparing the cost of buying alum from the store and the cost of making alum will help them make an informed decision.
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In group c, do all four compounds appear to be molecular, ionic, or molecular acids? based on this answer, would you expect them to dissociate?
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The compounds in group c are a mixture of both ionic and molecular acids. Ionic compounds tend to dissociate in water, while molecular compounds do not dissociate in water.
Explanation:Based on the information provided, we can determine the nature of the compounds in group c. KCl and MgCl2 are ionic compounds because they consist of a metal (K and Mg) and a nonmetal (Cl). On the other hand, NC13, ICl, PCl5, and CCl4 are molecular compounds because they only contain nonmetals (N, C, I, P, and Cl). So, the compounds in group c can be classified as both ionic (KCl and MgCl2) and molecular acids (NC13, ICl, PCl5, and CCl4).
Regarding dissociation, ionic compounds tend to dissociate into ions when dissolved in water. So, we would expect KCl and MgCl2 to dissociate into K+ and Cl- ions. However, molecular compounds usually do not dissociate into ions in water. Instead, they remain as intact molecules. Therefore, we would not expect NC13, ICl, PCl5, and CCl4 to dissociate when dissolved in water.
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The determination involves analyzing the compounds' composition. Molecular compounds do not dissociate into ions, while ionic compounds and molecular acids do. If the compounds in Group C are acids, they will dissociate in water.
To determine if all four compounds in group C are molecular, ionic, or molecular acids, we need to analyze their composition and behavior in water. Molecular compounds typically consist of nonmetals and do not dissociate into ions in water. Ionic compounds are formed from metals and nonmetals and dissociate into cations and anions when dissolved in water. Molecular acids, such as HCl, are covalent but dissociate in water to produce H+ ions and anions.
Given this, if the compounds are molecular acids, you would expect them to dissociate in water.
What situation do you use a volumetric flask,conical flask,pipette and graduated cylinder? Explain your answer from the accuracy aspects of these apparatus.
Answers
When only rough approximations are needed, we use a conical flask.
When we want to measure liquid volumes to an accuracy of within about 1%, we use the graduated cylinders. They are for also used general purpose, but not for sensitive quantitative analysis.
When extreme precise or accurate measurements are needed for dilution or preparation of liquid samples, we use the volumetric flask to contain it.
If we are preparing to perform titration, we will have to use a pipette to transfer very accurate amounts of sample.
This liquid metal has more protons than gold, but fewer electrons then thallium.
Answers
The number of protons and electrons of an atom is equal and the amount can be obtained by looking at the atomic number of that atom or element.
The atomic numbers are:
Gold = 79
Thallium = 81
So we are looking for the element with an atomic number of 80, that is:
Mercury
Answer:
Mercury (Hg)
The liquid metal that fits the description is mercury (Hg), which has more protons than gold (Au) and is liquid at room temperature. Mercury is unique due to its electronic configuration and is thermally conductive but a poor conductor of heat compared to other metals.
Explanation:The liquid metal in question that has more protons than gold but fewer electrons than thallium is mercury (Hg). Gold (Au) has an atomic number of 79, meaning it has 79 protons. Thallium (Tl) has an atomic number of 81, meaning it has 81 electrons when neutral. Mercury has an atomic number of 80, placing it right between gold and thallium in terms of protons, and since it is a metal and liquid at room temperature, it fits the description given.
Mercury is a metal that is thermally conductive but compared to other metals like copper or silver, it is a poor conductor of heat. However, it is still a fair conductor of electricity. The electronic configuration of mercury is unique and makes it resistant to losing electrons, which contributes to its liquid state at room temperature and its conduction properties.
Given 7.45 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100% yield? express your answer in grams to three significant figures.
Answers
The equation for the reaction is:
C₄H₈O₂ + C₂H₅OH = C₆H₁₂O₂ + H₂O
Now you see that the number of the moles of butanoic acid and etyl butyrate is equal in
the reaction. That means;
number of moles of C₄H₈O₂ = number of moles of C₆H₁₂O₂
mass of C₄H₈O₂/ Molar mass of C₄H₈O₂ = mass of C₆H₁₂O₂/ molar mass of C₆H₁₂O₂
mass of C₆H₁₂O₂ = molar mass of C₆H₁₂O₂ x mass of C₄H₈O₂/ Molar mass of C₄H₈O₂
Now, assuming 100% yield, the mass of ethyl butyrate produced is:
= 7.45/88.11 x 116.16
=9.82g
Thus, the theoretical yield of ethyl butyrate is 9.82g.
Given 7.45 g of butanoic acid, a perfect 100% yield would produce approximately 9.82 g of ethyl butyrate. This is calculated based on the mole to mole correspondence between butanoic acid and ethyl butyrate and the molar masses of the two substances.
Explanation:To solve this question, we first need to determine the molar mass of butanoic acid (C4H8O2), which is approximately 88.11 g/mol. Given that we have 7.45 g of butanoic acid, we can calculate the number of moles of butanoic acid to be 7.45 g / 88.11 g/mol ≈ 0.0845 mol.
The reaction of butanoic acid with ethanol produces ethyl butyrate in a 1:1 ratio. So, the same number of moles of ethyl butyrate (0.0845 mol) would be produced in an ideal case.
The molar mass of ethyl butyrate (C6H12O2) is around 116.16 g/mol. Thus, the grams of ethyl butyrate synthesized from the reaction would be 0.0845 mol x 116.16 g/mol ≈ 9.817 g.
Assuming a 100% yield, we would have 9.817 g of ethyl butyrate. However, to express the answer with three significant figures, we round it to 9.82 g.
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1. In which of these cases do we have enough information to say that the atom is electrically neutral?
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Since the number are needed in some amount to be considered stable (*2-1st level-need 8 for valence level) , The atom that has 7 protons and 7 electrons would be considered enough
Which chemical equation shows that the total mass during a chemical reaction stays the same? A) Mg + Cl2 → MgCl2 B) NaOH + MgCl2 → NaCl + MgOH C) 2Na + 2H2O → NaOH + H2 D) H2O + O2 → H2O
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Answer: The correct option is A.
Explanation: Law of conservation of mass states that the total mass in a chemical reaction remains conserved that is total mass on the reactant side will always be equal to the product side.
We are given 4 chemical reactions, the total mass during a chemical reaction will be same in the case of reaction A because total number of atoms on the reactant side is equal to the total number of atoms on the product side.
[tex]Mg(s)+Cl_2(g)\rightarrow MgCl_2(s)[/tex]
Mass of Magnesium = 24 g/mol
Mass of Chlorine = 35.5 g/mol
[tex]\text{Mass on the reactant side}=24+(2\times 35.5)=95g/mol[/tex]
[tex]\text{Mass on the product side}=24+(2\times 35.5)=95g/mol[/tex]
From the above, it is visible that the Total mass during this chemical reaction is same.
All the other reactions are not balanced, therefore the total mass will not be the conserved.
Table 7.1: In photosynthesis, green plants convert carbon dioxide and water into glucose (C6H12O6) according to the following equation:
6CO2(g)+6H2O(l) → C6H12O6(aq)+6O2(g)
Estimate ΔH for the reaction using bond dissociation energies from Table 7.1. Give your answer in kcal. C6H12O6 has five C−C bonds, seven C−H bonds, seven C−O bonds, and five O−H bonds.
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2264.73 Kcal/mol
Which change increases the amount of iron produced in the equation fe3o4(s) 4h2(g) energy?
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To increase the amount of iron produced in the equation Fe3O4(s) + 4H2(g) → energy, you need to increase the amount of hydrogen gas (H2) in the reaction.
Explanation:To increase the amount of iron produced in the equation Fe3O4(s) + 4H2(g) → energy, you would need to increase the amount of hydrogen gas (H2) in the reaction.
According to the equation, for every 4 moles of hydrogen gas, you can produce 1 mole of iron (Fe3O4). So, if you increase the amount of hydrogen gas, you will increase the amount of iron produced in the reaction.
For example, if you double the amount of hydrogen gas from 4 moles to 8 moles, you will also double the amount of iron produced from 1 mole to 2 moles.
Which statement correctly describes whether a compound is a pure substance?
A compound is not a pure substance because each of its molecules is made up of the atoms of two or more different elements.
A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.
A compound is not a pure substance because it is not an element, and only elements are pure substances.
A compound is a pure substance because it consists of two different elements, which are pure substances.
Answers
A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.
Answer:
A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.
Explanation:
Consider the photosynthetic conversion of co2 and h2o to form glucose, c6h12o6, and o2.
a. write the balanced reaction.
b. is the number of each type of atom on either side of the arrow the same?
c. is the number of molecules on either side of the equation the same
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C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O
b. Yes, it is because it has to obey the Law of Conservation of mass. There are a total of 6 atoms of C, 12 atoms of H and 18 atoms of O both in the left and right side of the reaction.
c. Yes. The stoichiometric coefficients can represent as atoms, molecules or moles.
Final answer:
The balanced equation for photosynthesis is 6CO2 + 6H2O + light energy → C6H12O6 + 6O2, affirming the conservation of atoms but not molecules.
Explanation:
Photosynthesis Chemical Reaction
The balanced chemical equation for the photosynthetic conversion of CO2 and H2O into glucose (C6H12O6) and O2 is:
6CO2 + 6H2O + light energy → C6H12O6 + 6O2
b. Yes, the number of each type of atom on either side of the arrow is the same, maintaining the law of conservation of mass.
c. The number of molecules on either side of the equation is not the same because there are different numbers of reactant and product molecules, but the number of atoms is conserved.
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How does the law of conservation of mass apply to this reaction: Al + 3HCl = H2 + AlCl3?
A. The equation needs to be balanced. There are fewer Hydrogen atoms in the equation than Aluminum or Chlorine.
B. The law of conservation of mass has already been applied. There is an equal number of each element on both sides of the equation.
C. Hydrogen and Chlorine need to be balanced. There is an equal amount of aluminum on each side.
D. Only the Hydrogen needs to be balanced. There are equal numbers of Aluminum and Chlorine.
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The correct answer is...
D. Only the hydrogen needs to be balanced. There are equal numbers of aluminum and chlorine.
A sample of an unknown gas effuses in 12.1 min. an equal volume of h2 in the same apparatus under the same conditions effuses in 2.42 min. what is the molar mass of the unknown gas?
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MW H2 = 2
MW 2 = ?
rate 1 = 1/12.1
rate 2 = 2.42
aopply graham law
Rate1/rate2 = sqrt(MW2/MW1)
(12.1/2.42)^2 = MW2/2
MW = 2(12.1/2.42)^2 = 50 g/mol
Therefore, the molar mass of the unknown gas is 50 g/mol
According to Graham's Law of effusion, the rate of effusion of a gas is inversely proportional to the square root of its molar mass. By comparing the rates of effusion of H2 gas and the unknown gas, we can calculate the molar mass of the unknown gas. The molar mass of the unknown gas is approximately 0.404 g/mol.
Explanation:Graham's Law of effusion states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
Let's use the given information to calculate the molar mass of the unknown gas.
According to the question, an equal volume of H2 effuses in 2.42 min, while the unknown gas effuses in 12.1 min.
Applying Graham's Law, we can set up the following ratio:
(Rate of H2 effusion) / (Rate of unknown gas effusion) = √(Molar mass of unknown gas) / √(Molar mass of H2)
Substituting the given values, we have:
2.42 / 12.1 = √(Molar mass of unknown gas) / √(2.02 g/mol)
Simplifying this equation, we find:
Molar mass of unknown gas = (2.42 / 12.1) * (2.02 g/mol)
Calculating this, we get:
The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below? 7Li
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All substances taking part in a certain interaction are shown below: Butane is written followed by an addition sign followed by Oxygen followed by an equal to sign followed by Carbon dioxide followed by an addition sign followed by Water. Just below Butane 29 grams is written and just below Carbon dioxide and Water is a parentheses below which 133 grams is written Which of the following is the correct estimate of the amount of oxygen used in the interaction? Sum of 133 g and 29 g Difference between 133 g and 29 g Twice the sum of 133 g and 29 g Twice the difference between133 g and 29 g
Answers
Answer:
Difference between 133g and 29g
Explanation:
Alance this equation, and then enter the coefficients, in order, below. ccl4(g)+o2(g)⇌cocl2(g) + cl2(g) express your answer as integers separated by commas (e.g., 1,2,3,4), where 1 indicates the lack of a coefficient.
Answers
To balance this chemical equation, we have to make sure that equal number of elements are located on the left side and the right side by placing coefficients:
CCl4 + O2 <-- --> COCl2 + Cl2
Balancing this equation:
2CCl4(g)+ O2(g) ⇌ 2COCl2(g) + 2Cl2(g)
Answer:
2,1,2,2
To balance the equation ccl4(g)+o2(g)⇌cocl2(g) + cl2(g), the coefficients should be: 1,2,1,1.
Explanation:To balance the equation ccl4(g)+o2(g)⇌cocl2(g) + cl2(g), we need to ensure that the number of each atom is the same on both sides of the equation.
Starting with the carbon atoms, we have 1 on the left side and 1 on the right side. So, the coefficient for CCl4 remains 1.
Next, we have 2 chlorine atoms on the left side and 2 on the right side. So, the coefficient for Cl2 remains 1.
Finally, we have 2 oxygen atoms on the right side and 0 on the left side. To balance the oxygen atoms, we need a coefficient of 2 for O2.
Therefore, the balanced equation is: CCl4(g) + 2O2(g) ⇌ COCl2(g) + Cl2(g).
When H2CO3 reacts to form CO2 and H2O, what is the net change in the number of shared electron pairs?
Answers
The net change is zero because the number of shared electron pairs is not changed. In H2CO3 there are 2 pairs of shared electron in O-H bond, 2 pairs of shared electron in C-OH bond and 2 pairs of shared electron in C-O bond. So the total pairs is 6
In H2O there are 2 pairs of shared electron in O-H bond and in CO2 4 pairs of shared electron in C-O bond. The total pair is still 6
What is the molar mass of fe(nh4)2(so4)2*6h2o?
Answers
Convert grams FeSO4.(NH4)2SO4.6H2O to moles.
55.845 + 32.065 + 15.9994*4. + (14.0067 + 1.00794*4)*2 + 32.065 + 15.9994*4 + 6*(1.00794*2 + 15.9994)
392.1388 g/mol is the molar mass of the given compound. The molar mass of a material is a bulk attribute rather than a molecular one.
The ratio among the mass with the quantity of a substance (measured in mole) of any sample of a chemical compound is known as the molar mass (M) in chemistry. The compound's molar mass represents an average over numerous samples, which frequently have different masses because of isotopes. A terrestrial average as well as a function of the relative distribution of the isotopes of the component atoms on Earth, the molar mass is most frequently calculated using the standard atomic weights.
FeSO[tex]_4[/tex](NH[tex]_4[/tex])[tex]_2[/tex](SO[tex]_4[/tex])[tex]_2[/tex].6H[tex]_2[/tex]O molar mass=
55.845 + 32.065 + 15.9994×4. + (14.0067 + 1.00794×4)×2 + 32.065 + 15.9994×4 + 6×(1.00794×2 + 15.9994)
=392.1388 g/mol
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Question 2 the final electron acceptor in the electron transport chain is?
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What solvent should you use to measure the density of naphthalene acid?
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