consider the reaction between nitrogen and oxygen gas to form dinitrogen monoxide: 2n2(g) o2(g)→2n2o(g),δhrxn= 163.2kj
Answers
The reaction between N₂ and O₂ to form N₂O is exothermic with a ΔHrxn of 163.2 kJ. The balanced equation shows the stoichiometric coefficients and the heat released per mole of reaction.
The reaction between nitrogen gas (N₂) and oxygen gas (O₂) to form dinitrogen monoxide (N₂O) can be represented by the following balanced chemical equation:
2N₂(g) + O₂(g) → 2N₂O(g)
The value of ΔHrxn, which represents the enthalpy change for the reaction, is given as 163.2 kJ.
This indicates that the reaction is exothermic, meaning it releases heat to the surroundings. The positive value of ΔHrxn indicates that the reaction is accompanied by an increase in enthalpy.
The magnitude of ΔHrxn (163.2 kJ) represents the amount of heat released per mole of reaction. Since the reaction produces 2 moles of N₂O for every 2 moles of N₂ and 1 mole of O₂, the value of ΔHrxn applies to the stoichiometric coefficients provided in the balanced equation.
In summary, the reaction between nitrogen and oxygen gas to form dinitrogen monoxide is an exothermic reaction with a ΔHrxn value of 163.2 kJ.
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Related Questions
50 Points
Look at the image below
Answers
Answer:
B-Sucrose molecules are too large to conduct electricity in once dissolved in water.
D-Salts, like NaCL, have ionic bonds and are considered to be electrolytes:when dissolved in water, salts dissociate and form ions.
Explanation:
Explanation:
B) Answer And D) Answer Are Correct.
Hope It Helps U..
If the pH is decreased from 7 to 6, it means that the
1..concentration of Hydrogen ions is 10 less
2...concentration of Hydrogen ions is 10 more
3.it is the same
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Answer:2...concentration of Hydrogen ions is 10 times more
Explanation:
please find this page online or please answer it I need it ASAP
Answers
Answer:
I put the answer key to all sides as a picture, have an amazing day :D
Explanation:
Describe the changes to the coastline pictured above. Look particularly at North and South Monomy Island.
Answers
Where is the picture?
Calculate the force applied (in newtons) if a pressure of 6000Pa is acting on an area of 15m?
Answers
F = 6000/15
Force = 400 Pa/m
4 Fe(s) + 3 O2(g) ↔ 2 Fe2O3(s) ΔH = -1650 kJ/molThe oxidation of Fe(s) is represented by the equation above. Which of the following correctly explains whether or not the reaction is thermodynamically favorable?There are more particles (including particles in the gas state) in the reactants than in the product, thus ΔS < 0. Because ΔH is large and negative, the reaction will be thermodynamically favorable at low temperatures.There are more particles (including particles in the gas state) in the reactants than in the product, thus ΔS < 0. Because ΔH is large and negative, the reaction will be thermodynamically favorable at any temperature.There are more particles (including particles in the gas state) in the reactants than in the product, thus ΔS > 0. Because ΔH is large and negative, the reaction will be thermodynamically favorable at all temperatures.There are more particles (including particles in the gas state) in the reactants than in the product, thus ΔS > 0. Because ΔH is large and negative, the reaction will not be thermodynamically favorable at any temperature.
Answers
(4 Fe(s) + 3 O2(g) ↔ 2 Fe2O3(s) ΔH = -1650 kJ/mol) is thermodynamically favorable is: "There are more particles (including particles in the gas state) in the reactants than in the product, thus ΔS < 0.
Because ΔH is large and negative, the reaction will be thermodynamically favorable at low temperatures."
This is because there are fewer particles in the product, which results in a decrease in entropy (ΔS < 0). Since the enthalpy change (ΔH) is large and negative, the reaction is exothermic and releases energy.
At low temperatures, the reaction is thermodynamically favorable due to the combined effects of negative ΔH and low temperatures overcoming the decrease in entropy.
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Problem: Co3+ | Co2+ and Ni2+ | NiAnode?Cathode?(You need to use Reference Table B-16.)a. Co2+b. can't answerc. Ni2+d. Nie. Co3+
Answers
Answer:
- Anode: Co3+ | Co2+
- Cathode: Ni | Ni2+
Explanation:
The anode is where oxidation reaction occurs, and the cathode is where reduction reaction occurs.
From the table of reduction potencials, we find that:
- Co reaction:
\(\begin{gathered} Co^{3+}+2e^-\rightarrow Co^{2+} \\ E=1.81\text{ }V \end{gathered}\)- Ni reaction:
\(\begin{gathered} Ni\rightarrow Ni^{2+}+2e^- \\ E=-0.250\text{ V} \end{gathered}\)Now, to find out which one is the anode and which one is the cathode, it is necessary to compare the reduction potencials.
The reaction of Ni have negative potentials, so Ni will be the anode and Co will be the cathode.
does an oxygen atom form two covalent bonds?
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Answer:
yes
Explanation:
Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell.
Different between Public and private enterprises
Answers
Explanation:
Private enterprise refers to the enterprise owned, managed and controlled by private persons. Public enterprise refers to the enterprise owned, manage and controlled by government. Private enterprise main motive is earning profit. ... Private enterprise involves funds from individuals.
Why can you not create a Punnett square
to determine the height of an individual-
Answers
Limitations of Punnett squares as models of inheritance include the lack of information about likely variation in small samples such as individual families and the lack of information about population prevalence of parental genotypes (so no predictions can be made about population prevalence of offspring genotypes
a polymer mixture p has number-average and weight-average molecular weights of 120,000 and 300,000 respectively and was divided into fractions a and b by fractional precipitation.
Answers
A polymer mixture p that has number-average and weight-average molecular weights of 120,000 and 300,000 and then Number average molecular weight is 110,000 g/mol
a) The number average molecular weight (NAM) is calculate using the mole numbers of each component. In this case, we will multiple each component molecular weight by the number of moles of each one. After that we will sum them and finally to divide by the total number of moles.
NAM = (Na*MA + Nb*MB)/(Nt)
NAM = (1 mol *120000 g/mol + 1*100000 g/mol ) /(2 mol)
NAM = 110000 g/mol
The number average molecular weight for the polymer P is 110,000 g/mol
We have a polymer P made up of two monodisperse fractions.
A with molecular weight of MA = 120000 g/mol and B with MB =100000 g/mol.
The batch contains an equal mole fraction of each component A and B.
Let's suppose a total number (Nt) of mols 2 moles. Equal fraction means XA = 0.5 and XB =0.5
Nt = 2 mol
Na = 2*0.5 = 1 mol
Nb = 2*0.5 = 1 mol.
So, we have 1 mol of A, 1 mol of B and 2 moles in total.
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in order to reach the equivalence point in their titration, sonni needed to add 20.42 ml of koh to 20.00 ml of 0.4 m hf. what is the concentration of conjugate base at the equivalence point after the initial neutralization?
Answers
The concentration of the conjugate base (KF) at the equivalence point after the initial neutralization is approximately 0.198 M.
To find the concentration of the conjugate base at the equivalence point after the initial neutralization, we need to understand the stoichiometry of the reaction. In this case, we have a titration of HF (hydrofluoric acid) with KOH (potassium hydroxide).
The balanced equation for the reaction between HF and KOH is:
HF + KOH → KF + H2O
From the equation, we can see that 1 mole of HF reacts with 1 mole of KOH to form 1 mole of KF.
Given that 20.42 mL of KOH (a strong base) was required to neutralize 20.00 mL of 0.4 M HF (a weak acid), we can determine the number of moles of KOH used.
Using the formula: Moles = Molarity × Volume (in liters), we can calculate:
Moles of KOH = 0.4 M × 0.020 L = 0.008 moles
Since the stoichiometry of the reaction is 1:1, this means that 0.008 moles of KF are formed at the equivalence point.
Now, to find the concentration of the conjugate base (KF) at the equivalence point, we divide the moles of KF by the total volume of the solution. The total volume is the sum of the volumes of KOH and HF used.
Total volume = 20.42 mL + 20.00 mL = 40.42 mL = 0.04042 L
The concentration of KF at equivalence point = Moles of KF / Total volume
= 0.008 moles / 0.04042 L ≈ 0.198 M
Therefore, the concentration of the conjugate base (KF) at the equivalence point after the initial neutralization is approximately 0.198 M.
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The following is information from a simple linear regression to estimate the energy content (calories) of a muesli bar, based on the protein content (grams) = 73.4+0.38 Sugar r = 0.7 n = 77 What is the value of the coefficient of determination? Please give your answer correctly rounded to two decimal places and do NOT create a percentage.
Answers
The value of the coefficient of determination is 0.49.
The coefficient of determination, also known as R-squared (R²), measures the proportion of the total variation in the dependent variable (energy content) that can be explained by the independent variable (protein content). It provides a measure of how well the regression model fits the data.
The coefficient of determination is calculated by squaring the correlation coefficient (r), which represents the strength and direction of the linear relationship between the two variables.
In this case, the given information provides the correlation coefficient (r = 0.7), which indicates a moderate positive correlation between protein content and energy content.
To find the coefficient of determination, we square the correlation coefficient:
R² = r² = (0.7)² = 0.49
Therefore, the value of the coefficient of determination is 0.49.
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Solid calcium reacts rigorously with liquid water to form aqueous calcium hydroxide and hydrogen gas. a. True
b. False
Answers
The statement that solid calcium reacts rigorously with liquid water to form aqueous calcium hydroxide and hydrogen gas is true one.
Metals react with water to form metal hydroxides and hydrogen gas. The equilibrium reaction is written
Ca (s) + 2H₂O (l) → Ca(OH)₂ (aq) + H₂(g) ↑
In this case, the reaction of metallic calcium with water - when calcium metallic reacts with water, it is less reactive. This creates a hydroxide (a cloudy white precipitate) called calcium hydroxide, which creates bubbles of hydrogen gas that stick to the surface of the calcium. After the reaction is complete, we see the metal floating in the water due to the hydrogen gas attached to the surface of the metal. Therefore, solid calcium reacts with liquid water to form an aqueous solution of calcium hydroxide and hydrogen gas.
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The photoelectron spectra for H and He are represented at left. Which of the following statements best accounts for the fact that the peak on the He spectrum is farther to the left and higher than the peak on the H spectrum?answer choicesHe has an additional valence electron in a higher energy level than the valence electron in H .He has a greater nuclear charge than H and an additional electron in the same energy level.He has a completely filled valence shell in which the electrons are a greater distance from the nucleus than the distance between the H nucleus and its electron.It takes longer for the electrons in He to be removed due to the higher nuclear mass of He.
Answers
The answer is Option b .He has a greater nuclear charge than H and an additional electron in the same energy level
What is Photoelectron Spectroscopy (PES)?PES (photoelectron spectroscopy) is a method for figuring out how much energy electrons in atoms and molecules have relative to one another. PES is frequently used by scientists to examine molecular bonding or to find out what elements make up a material.
By ionising a sample and examining the kinetic energy distribution of the released photoelectrons, a technique called photoelectron spectroscopy (PES) investigates the composition and electronic state of the sample's surface region.By measuring the kinetic energy of photoelectrons to ascertain their binding energy, intensity, and angular distributions, it is possible to analyse the electronic structure of molecules. By detecting electrons rather than photons, it studies a substance's electrical structure, which sets it apart from traditional spectroscopy.The relative energy of electrons in atoms and molecules can be ascertained via photoelectron spectroscopy (PES). A PES spectrum is a graph of the photoelectron count vs binding energy.The electrons in an atom's various subshells are represented by PES peaks. The peaks with the lowest binding energies correspond to valence electrons, while the peaks with the highest binding energies correspond to core electrons.The photoelectron spectra of typical hydrogen-bonded complexesThe photoelectron spectra of typical hydrogen-bonded complexes had been seen in the gas phase. It was discovered that whereas the three higher occupied orbitals of the proton donor are destabilized by hydrogen-bond formation, the nonbonding orbital of the proton acceptor is greatly stabilized. The charge-transfer concept for the hydrogen bond is strongly supported by the significant orbital energy shifts brought on by hydrogen bond formation.
Eg : CF3COOH–(C2H5)2NCH3, CF3COOH–(n-C3H7)3N, CF3CF2COOH–(C2H5)2NCH3, and CF3CF2COOH–(n-C3H7)3N
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Express your answer as a complete ionic equation including phases. Enter a balanced complete ionic equation for
HCl(aq)+LiOH(aq)→H2O(l)+LiCl(aq)
CaS(aq)+BaCl2(aq)→BaS(s)+CaCl2(aq)
NaOH(aq)+HNO3(aq)→H2O(l)+NaNO3(aq)
Na3PO4(aq)+ZnCl2(aq)→Zn3(PO4)2(s)+NaCl(aq)
Answers
A balanced ionic equation shows the specie that is present in the reaction.
What is a balanced ionic equation?A balanced ionic equation shows the specie that is present in the reaction. The ions that undergo change appear in the final ionic equation. Let us now write the ionic equation for each reaction.
In the case of reaction 1;
H^+(aq) + Cl^-(aq) + Li^+(aq) + OH^-(aq) ---->H2O(l) + Li^+(aq) + Cl^-(aq)
Reaction 2;
Ca^2+(aq) + 2Cl^-(aq) + Ba^2+(aq) + S^2-(aq) -----> BaS(s) + Ca^2+(aq) + 2Cl^-(aq)v
Reaction 3;
Na^+(aq) + NO3^-(aq) + H^+(aq) + OH^-(aq) ---->H2O(l) + Na^+(aq) + NO3^-(aq)
Reaction 4;
6Na^+(aq) + 6Cl^-(aq) + 3Zn^2+ + 2PO4^3-(aq) -----> Zn3(PO4)2(s) + 6Na^+(aq) + 6Cl^-(aq)
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Negative effects on farming. Atleast 10 negative effects
(marks 10)
Answers
Answer:
climate change, dead zones, genetic engineering, pollutants, deforestation, soil degradation, waste, Over irrigation, salt buildup in soils, monoculture
Explanation:
Hopefully this'll help you!
Determine the mass in grams of a gold sample which occupies a volume of 16.39 mL? Gold has a
density of 19.3 g/mL.
a. 0.118 g
b. 0.316 g
c. 0.849 g
d. 1.18 g
e. 316 g
Answers
Answer: 316 g
Explanation:
Gold is given as a volume but the answer is asked for as a mass. Use the density of gold to find the mass of gold in 16.39 mL.
16.39 mL x (19.3 g/mL) = 316.327 g = 316 g
Note that the mL cancel and you are left with grams.
Question: How many grains of rice are in a 453.6 g (1lb.) bag of rice?
The rice is white.
The height of the bag of rice is 2.54 cm.
The length of the bag of rice is 20 cm.
The width of the bag of rice is 8 cm.
A grain of rice has a length of 6.0 mm.
20 grains of rice weigh .58 grams.
Answers
Answer:
453.6/58/2=453.6/2.9=156.314 grains
The number of grains in a 453.6 g (1lb.) bag of rice is equal to 157 grains of rice.
What is weight?The weight can be described as the force acting due to gravity. Weight can be considered as a vector quantity if the gravitational pull is acting on the body.
Therefore, in free fall, the weight of the object would be zero. Therefore, terrestrial objects can be weightless while ignoring air resistance.
The unit for measurement of weight is the same as of force, which is the newton. A body with a mass of 1 kilogram will exhibit a weight of about 9.8 Newton on the surface of the Earth, and about 1/6th as much weight on the Moon.
Given the weight of the 20 grains = 58 g
The weight of one grain = 58/20 = 2.9 g
The number of grains (n) of rice in weight 453.6 g of the bag of rice can be calculated as:
n = 453.6/2.9
n = 156.4 ≈ 157
Therefore, the number of grains can be considered equal to 157 grains of rice.
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what is the difference between glutamic acid and valine?
Answers
The main difference between glutamic acid and valine is that glutamic acid is a non-essential amino acid, while valine is an essential amino acid. Glutamic acid is involved in various physiological processes and is a precursor for the synthesis of the neurotransmitter GABA. Valine, on the other hand, is primarily involved in protein synthesis and is an important component of muscle tissue.
glutamic acid and valine are both amino acids, which are the building blocks of proteins. Glutamic acid is a non-essential amino acid, meaning it can be synthesized by the body, while valine is an essential amino acid, meaning it must be obtained from the diet.
Glutamic acid is involved in various physiological processes, including the synthesis of proteins, neurotransmission, and the metabolism of other amino acids. It is also a precursor for the synthesis of the neurotransmitter gamma-aminobutyric acid (GABA). Valine, on the other hand, is primarily involved in protein synthesis and is an important component of muscle tissue.
In terms of their chemical structures, glutamic acid is an acidic amino acid, while valine is a neutral amino acid. Glutamic acid has a carboxyl group (-COOH) and an amino group (-NH2) attached to a central carbon atom, along with a side chain. Valine, on the other hand, has a methyl group (-CH3) attached to a central carbon atom, along with a side chain.
Overall, the main difference between glutamic acid and valine lies in their chemical structures and their roles in the body.
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Valine and glutamic acid are two different amino acids with distinct characteristics and roles.
Glutamic acid is a polar, acidic amino acid, with a side chain containing a carboxyl group, an amino group, and a carboxylic acid functional group. It acts as a neurotransmitter and affects metabolism and protein synthesis. In contrast, valine is a hydrophobic, nonpolar amino acid with a branched-chain alkyl side chain.
It is important for protein synthesis and helps to stabilize proteins. Valine must come from the diet as the body is unable to produce it. Finally, valine is nonpolar and important for protein synthesis while glutamic acid is polar and acidic, which has a function in neurotransmission.
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Sewage sludge in the united states contains a mixture of dangerous chemicals that include human waste and __________.
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Sewage sludge in the United States contains a mixture of dangerous chemicals that include human waste and various contaminants.
These contaminants can include heavy metals (such as lead, mercury, and cadmium), pathogens (such as bacteria and viruses), pharmaceuticals, pesticides, and other toxic substances. The specific composition of contaminants in sewage sludge can vary depending on factors such as the source of the sewage and the treatment processes it has undergone. Proper treatment and disposal of sewage sludge are important to minimize the potential environmental and health risks associated with these hazardous substances.
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Our current model of a chemical bond is to think of it as an electrical interaction between what two parts of an atom
Answers
Answer:
Explanation:
It involves the thinking of it as an electrical interaction between the positively charged part of an atom and the negatively charged part as well. Succinctly put, the interaction between the proton of an atom and the electron of an atom.
The relationship between these two sub atomic particles is one of the basis for many chemical bonding, and this is inclusive of all the bonds there exist. Hydrogen, Electrovalent and even Covalent bondings to mention but a few
Salt is a common example of a(n) _____________ bond, while Water is a common example of a(n) _____________ bond.
Answers
Covalent bonds
Answer:
salt is ionic bond and water is Polar covalent bond
Explanation:
Is HF Lewis structure polar or nonpolar?
Answers
HF Lewis structure is a polar due to the difference in electronegativity between hydrogen and fluorine atoms. This is due to permanent dipole moment, meaning that there is an uneven distribution of electrons within the molecule.
The HF (hydrogen fluoride) molecule has a polar covalent bond, which means that it has an uneven distribution of electrons between the two atoms.
In a polar covalent bond, one atom has a higher electronegativity than the other and therefore attracts the shared electrons more strongly, resulting in a partial negative charge on that atom and a partial positive charge on the other atom.
In the case of HF, fluorine has a higher electronegativity than hydrogen, which means that the electrons in the covalent bond are more strongly attracted to the fluorine atom. This results in a partial negative charge on the fluorine atom and a partial positive charge on the hydrogen atom.
Because the HF molecule has a polar covalent bond and the molecule has a bent shape due to the lone pair of electrons on fluorine, the molecule as a whole is also polar.
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Explain Froath Flotation Method!
Answers
Explanation:
a process for separating minerals from gangue by taking advantage of the differences in their hydrophobicity.
I believe that is accurate
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what compound results when 1-butanol is treated with p/i2?
Answers
When 1-butanol is treated with p/I2 (phosphorus and iodine), the compound formed is 1-iodobutane.
The reaction involves the substitution of the hydroxyl group (-OH) of 1-butanol with an iodine atom (I). The iodine atom replaces the hydroxyl group, resulting in the formation of 1-iodobutane.
The substitution reaction occurs through the process of nucleophilic substitution, where the iodine acts as the nucleophile and attacks the carbon atom adjacent to the hydroxyl group. The iodine atom replaces the hydroxyl group, resulting in the formation of a new carbon-iodine bond.
The reaction is commonly known as the "phosphorus/iodine exchange" or "Appel reaction" and is often used to convert alcohols into alkyl halides. The use of phosphorus in the reaction helps facilitate the formation of the alkyl halide by activating the iodine and assisting in the substitution process.
Therefore, when 1-butanol is treated with p/I2, the compound formed is 1-iodobutane.
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According to Hund's rule, what is the expected magnetic behavior of manganese (Mn)?
Question 10 options:
Paramagnetic
Diamagnetic
Nonmagnetic
Ferromagnetic
Answers
Answer:
Mn is a Paramagnetic
Explanation:
e Conversions
Mar 26 at 12:30pm
- Instructions
Question 1
How many grams are present in 2.93 x 10^23 atoms of Manganese (Mn)?
Answers
To determine the number of grams present in 2.93 x 10²³ atoms of manganese (Mn), we need to use the atomic weight of manganese and Avogadro's number.
The atomic weight of manganese is 54.94 g/mol. Avogadro's number is 6.022 x 10²³ particles per mole.
First, we need to convert the given number of atoms to moles using Avogadro's number.
2.93 x 10²³ atoms Mn x (1 mol Mn/6.022 x 10²³ atoms Mn) = 0.0485 moles Mn
Next, we can use the atomic weight of manganese to convert moles to grams.
0.0485 moles Mn x (54.94 g Mn/mol) = 2.67 grams Mn
Therefore, 2.93 x 10²³ atoms of manganese (Mn) weigh approximately 2.67 grams.
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Question is located on the picture below
Answers
Across a period, elements gain a proton and valence electron.
Convert to number of atoms 294 grams Au
Answers
your messageConvert to number of atoms 294 grams AuTo convert 294 grams of Au to the number of atoms, we need to use the Avogadro's number, which is 6.022 x 10^23 atoms/mole. First, we need to find the number of moles of Au in 294 grams: 294 grams Au / 196.97 g/mole = 1.49 moles Au Next, we can calculate the number of atoms: 1.49 moles Au x 6.022 x 10^23 atoms/mole = 8.97 x 10^23 atoms Au Therefore, there are approximately 8.97 x 10^23 atoms of gold in 294 grams.