Answers
Answer:
Explanation:
37.98 mL of .107 M NaOH = 37.98 x .107 mL of M NaOH
= 4.064 mL of M NaOH .
= 4.064 x 10⁻³ L of M NaOH
It will contain 4.064 x 10⁻³ moles of NaOH
4.064 x 10⁻³ moles of NaOH will react with 4.064 x 10⁻³ moles of unknown acid
1.512 g of acid = 1.512 / M moles of acid where M is molecular weight of acid
1.512 / M = 4.064 x 10⁻³
M = 1.512 / 4.064 x 10⁻³
= 372 .
Mol weight of acid = 372.
Related Questions
If a less concentrated initial solution of sodium bicarbonate was used in beaker C, would that solution require more or less bicarbonate to neutralize the acid? Why?
Answers
If a less concentrated initial solution of sodium bicarbonate was used in beaker C, it would require more bicarbonate to neutralize the acid.
What is concentrated?Concentrated means something that has been increased in strength or power by reducing its volume. It can refer to a solution that has a higher concentration of solutes than the original solution, a sound that is louder or stronger, or a force that is more powerful or intense. Concentrated can also refer to a person’s focus or attention on one particular thing, when their thoughts and energy are directed to a single point.
This is because the concentration of sodium bicarbonate determines how much of the acid can be neutralized by the solution. If the initial solution is less concentrated, then it will take more of the bicarbonate to neutralize the same amount of acid.
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1. Thinley filled a ballon with 14L of hydrogen gas, the the reduced the pressure to 4 atmosphere and found out that the ballon expanded to occupy double the initial volume. What was the initial pressure exerted on the ballon?
Answers
The initial pressure exerted on the balloon was 8 atmospheres.
To find the initial pressure exerted on the balloon, we can use Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume when temperature is constant. The formula for Boyle's Law is P1V1 = P2V2, where P1 and V1 represent the initial pressure and volume, and P2 and V2 represent the final pressure and volume.
In this case, we are given that the initial volume (V1) is 14 L and the final volume (V2) is double the initial volume (2 x V1). We are also given that the final pressure (P2) is 4 atmospheres. We need to find the initial pressure (P1).
Using the formula P1V1 = P2V2 and plugging in the given values, we have:
P1 * 14 = 4 * (2 * 14)
P1 * 14 = 4 * 28
P1 * 14 = 112
To isolate P1, we divide both sides of the equation by 14:
P1 = 112 / 14
P1 = 8
It's important to note that the unit of pressure in this case is atmospheres, as stated in the question. If the pressure unit had been different, appropriate unit conversions would have been necessary.
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The irreversible isomerization A
B was carried out in a batch reactor and the following concentration time data were obtained:
Time vs Concentration data in a Batch reactor
t 0 3 5 8 10 12 15 7.5
mol/h 4 2.89 2.25 1.45 1.0 0.65 0.25 0.07
Determine the reaction order,
, and the specific reaction a rate constant, k, using any method of your choice.
Answers
The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.
The term "kinetics" refers to the study of reaction rates, which are determined by measuring the concentration of reactants and products as a function of time.Kinetics experiments can be used to determine the reaction rate and order of reaction. A chemical reaction's rate is defined as the change in the concentration of a reactant or product per unit time. The order of a reaction refers to the number of molecules that must react to produce a product. The order of reaction can be determined by measuring the initial rate of the reaction as a function of concentration.Methods for determining the reaction rate order include the initial rate method, the half-life method, and the integrated rate method. The initial rate method determines the reaction order by measuring the initial rate of the reaction at different reactant concentrations. The half-life method determines the reaction order by measuring the time it takes for the reactant concentration to decrease by half.The integrated rate method determines the reaction order by measuring the concentration of the reactant or product at different times.The specific rate constant can be determined by using the Arrhenius equation, which relates the rate constant to the activation energy, temperature, and frequency factor. The frequency factor can be determined by measuring the rate constant at different temperatures.For such more question on polymerization
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Derive the van der Waals equation of state for a real gas and explain the significance of the law.
Answers
In the case of a real gas when you're using Van Der Waals equation, the volume of a real gas is considered as (Vm - b), where b can be considered as the volume occupied by per mole.
Therefore, when the ideal gas law gets substituted with V = Vm - b, it is given as : P(Vm - b) = nRT
The presence of intermolecular attraction P was modified as follows.
\(\frac{P+a}{V^{2} } (Vm- b) = RT\\\frac{P+an^{2} }{V^{2} } (V - nb) = nRT\)
Where, Vm: molar volume of the gas
R: universal gas constant
T: temperature
P: pressure
V: volume
Thus, it is possible to reduce Van Der Waals equation to the ideal gas law as PVm = RT.
What is the significance of the Ideal gas Law?
The ideal gas law only functions as an approximation approach when high accuracy is not necessary because it describes the behaviour of ideal gasses, which there aren't any of. It is a solid introduction to the fundamental behaviour of gases and works well as a teaching tool, which is why it is taught to the majority of university students as part of any introduction to physics. In essence, the ideal gas law enables students to comprehend ideas such as the process of thermodynamic cycles, such as an engine, the reason an airbag expands, what transpires to a balloon at high altitude, and other related ideas.
Hence, Van Der Waals equation to the ideal gas law as PVm = RT.
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How can an igneous rock turn into a sedimentary rock?
Answers
Answer:
An Igneous rock turns into a Sedimentary rock after going through two processes.
Explanation:
An igneous rock is crushed into little shards of rock called sediment, the sediment is then packed together by other rocks or strong forces, that form together to make a Sedimentary rock.
You can see the image for your explanation.
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Igneous rocks are broken down into sediments which are then compressed by forces of water, wind to form sedimentary rocks.
What are sedimentary rocks?
They are the types of rocks which are formed as a result of accumulation of minerals or organic particles at the surface of the earth.Sedimentation is the name given to a collective process which cause the particles to settle.
The study of sedimentary rocks is useful in civil engineering and as important sources of coal, fossil fuels and ores.The color of sedimentary rock is often determined by iron content and sometimes due to the presence of organic matter.
They are classified based on origin in to 4 types which are clastic, biochemical ,chemical and other sedimentary rocks.While based on composition they are classified as siliciclastic,carbonate ,evaporite,organic rich,siliceous ,iron-rich and phosphatic sedimentary rocks.
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State the effect that each of the following changes has on the reaction rate in this experiment --increase, decrease, or no effect. (Assume no volume change for any of the concentration changes)
a. An increase in the H2O2 concentration. Explain
b. An increase in the volume of water in solution A. Explain
c. An increase in the Na2S2O3 concentration. Explain.
d. The substitution of a 0.5% starch solution for one at 0.2%. Explain.
Answers
One of the reactants is H2O2, therefore raising its concentration would accelerate the process.
What causes a reaction's concentration to increase?As the reactant concentration increases, more reactant particles are moving together. The reaction rate will increase since there will be more collisions. The concentration of the reactants will affect how quickly a reaction proceeds.
A higher concentration of H2O2 would speed up the reaction because it is one of the reactants.
b. As the amount of water increases, the concentration of the reactant falls, which lowers the rate.
S2O3- is one of the reactants, hence boosting its concentration would accelerate the reaction.
d. Starch is solely utilized as an endpoint indication. On the rate, there is no difference.
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Experiment by hanging your first object (object 1) on the hook. Hold on to the cardboard, and position the cardboard and string so the object dangles just off the edge of the table. Then let go of the cardboard. If it moves, stop it when it reaches the edge of the table. Repeat the steps by replacing object 1 with object 2 on the hook. Finally, hang object 1 and object 2 together on the hook and repeat the steps. What do you observe when you hang different objects from the hook? What happens when two or more objects are on the hook together?
Answers
Answer:
makes now sense
Explanation:
If the change in Gibbs free energy for a process is positive, the process is: Select the correct answer below: O always spontaneous O always nonspontaneous O spontaneous at high temperatures O spontaneous at low temperatures
Answers
The process of changing the Gibbs free energy if positive is always nonspontaneous
What is Gibbs free energy?Gibbs Free Energy is one of the thermodynamic parameters that states whether the continuity of a reaction occurs spontaneously or not spontaneously. The equilibrium composition of a reaction is determined by DG° and K. The value of G will change as the chemical composition of the reactants changes to the products.
Gibbs free energy is denoted by G and expressed in the equation G = H – TS.
Gibbs Helmholtz equation:
ΔG = ΔH − TΔS
This equation is very useful in predicting the spontaneity of a process.
If ∆G is negative, the process is spontaneousIf ∆G is positive, the process is not spontaneousIf it is equal to zero, the process is in equilibriumSo if the process of changing the Gibbs free energy if it is positive then the process is always nonspontaneous
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32. Calcium carbide, CaC2, is an important preliminary chemical for industries producing
synthetic fabrics and plastics. CaC2 may be produced by heating calcium oxide with
CaO + C CaC2+CO
What is the mass of CaC2 which can be produced from the reaction of excess calcium oxi
10.2 g of carbon? (Hint: Balance the equation first)
Answers
Answer:
18.1 g
Explanation:
Step 1: Write the balanced equation
CaO + 3 C ⇒ CaC₂ + CO
Step 2: Calculate the moles corresponding to 10.2 g of C
The molar mass of C is 12.01 g/mol.
10.2 g × 1 mol/12.01 g = 0.849 mol
Step 3: Calculate the moles of CaC₂ produced from 0.849 moles of C
The molar ratio of C to CaC₂ is 3:1. The moles of CaC₂ produced are 1/3 × 0.849 mol = 0.283 mol
Step 4: Calculate the mass corresponding to 0.283 moles of CaC₂
The molar mass of CaC₂ is 64.10 g/mol.
0.283 mol × 64.10 g/mol = 18.1 g
Which sample (10.0 g of water or 10.0 g of ethanol) would require more heat to raise the temperature by 10.0°C?
Answers
10.0 g of ethanol would require more heat to raise the temperature by 10.0°C Because it has a higher boiling point.
The boiling point of a liquid is the temperature at which the vapour pressure of the liquid becomes equal to the atmospheric pressure of the liquid’s environment. At this temperature, the liquid is converted into a vapour.
The normal boiling point is high for liquids with strong intermolecular attractions and low for liquids with weak intermolecular attractions.
10.0 g of ethanol would require more heat to raise the temperature by 10.0°C because it has a higher boiling point.
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which element has the electrons configuration 1s22s22p63s23p64s23d104p2
Answers
The element with the electron configuration 1s22s22p63s23p64s23d104p2 is Silicon (Si).
Explanation:
The electron configuration of an element describes the arrangement of electrons in its atoms. The numbers and letters in the configuration represent the energy levels (n), sublevels (s, p, d, f), and the number of electrons in each sublevel.
In this case, the electron configuration of the element is:
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2
Breaking this down, we can see that the element has:
- 2 electrons in the 1s sublevel
- 2 electrons in the 2s sublevel
- 6 electrons in the 2p sublevel
- 2 electrons in the 3s sublevel
- 6 electrons in the 3p sublevel
- 2 electrons in the 4s sublevel
- 10 electrons in the 3d sublevel
- 2 electrons in the 4p sublevel
Based on the number of electrons in the outermost energy level (valence electrons), we can determine that this element is in group 14 of the periodic table. Looking at the periodic table, we can see that the
What is the second most consume grain in the world?
Answers
Answer:
Wheat!
Explanation:
Corn ranks first, Wheat, then Rice!
Uranus has a force of Gravity of 8.87 m/s^2. Sam has a MASS of 85 kg. What is his weight in Uranus? *
Answers
Answer:
Explanation:
Weight = mass x gravity
mass given = 85 kg
gravity = 8.87 m /s²
Weight = 85 x 8.87 = 753.95 N .
Weight on Uranus = 753.95 N .
Please i really need help it's due today
Answers
Answer:
there is your answer hope it helped :3
Why doesn't the red line showing the IR spectrum emitted from the earth's surface match the blue line showing the expected IR spectrum from a 300˚C object?
-Some of the light emitted is used to heat building.
-Molecules in the atmosphere such as CO2 and H2O absorb the radiation.
-Contrails from airplanes absorb the radiation cause the dip at 14 micrometers.
-IR radiation at 14 micrometers is not actually emitted by the earth's surface.
Answers
The red line showing the IR spectrum emitted from the earth's surface does not match the blue line showing the expected IR spectrum from a 300˚C object because:
Molecules in the atmosphere such as CO₂ and H₂O absorb the radiation; option B.What is IR spectroscopy?IR spectroscopy studies Infrared (IR) light in the electromagnetic spectrum.
Sensors are used by thermal detection systems, also known as infrared detection systems, to detect radiation in the infrared region of the electromagnetic spectrum.
In order to create an electronic signal, an infrared camera must first detect the thermal energy or heat, that the scene being seen emits. After processing this signal, an image is created.
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What would the approximate age of an
igneous rock that contains only 1/4 of its
original carbon-14 (half-life of carbon is
5700 years)
Answers
Explanation:
Carbon-14 has a half life of 5730 years, meaning that 5730 years after an organism dies, half of its carbon-14 atoms have decayed to nitrogen atoms. Similarly, 11460 years after an organism dies, only one quarter of its original carbon-14 atoms are still around.
Which is NOT a compound?
A. silicon dioxide
B. water
C. carbon dioxide gas
D. oxygen gas
Answers
Answer: Oxygen
Explanation: Its found on the periodic table as an element.
whats pairs of coumpounds produce calcium solphate
Answers
Calcium sulfate (CaSO4) is a chemical compound made from calcium, oxygen, and sulfur.
Which pairs of compounds produce calcium sulfate?The major sources of calcium sulfate naturally happen are gypsum and anhydrite, which occur at many position worldwide as evaporites.
A simple procedure for preparing acicular calcium sulfate dihydrate is on condition that in which a slurry of calcium carbonate carrying 100 to 800 grams per lite of calcium carbonate is assorted with a solution of sulphuric acid carrying 80 to 500 grams per liter sulphuric acid in proportions that construct calcium sulfate.
So we can conclude that Calcium sulfate, CaSO4, is a natural happen calcium salt.
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A compound contain 31.9% potassium
(K) 23.93% cl and the rest oxygen
what is the chemical formula of the
compound
K=39
cl=35.5
O =16
Answers
Answer:
kclo2
Explanation:
the percentage can't be written on the equation
Describe the features of a comet.
Answers
Answer:
Comets are frozen leftovers from the formation of the solar system composed of dust, rock, and ices. They range from a few miles to tens of miles wide, but as they orbit closer to the Sun, they heat up and spew gases and dust into a glowing head that can be larger than a planet.
a worker isolotes 2.675g of SIF4 after reacting 2.339g of SIo2 with HF what are theorical yield and actual yield?
Answers
Answer:
The actual yield is 2.675 grams and the theoretical yield is 4.0543 grams.
Explanation:
Based on the given question the reaction will be,
SiO₂ (s) + 4HF ⇒ SiF₄ + 2H₂O (l)
Let w be the concentration of silicon tetrafluoride generated by reacting silicon dioxide with hydrogen fluoride. The mass of silicon dioxide given in the question is 2.339 grams. The molar mass of silicon dioxide is 60 grams per mole and the molar mass of silicon tetrafluoride is 104 grams per mole.
Therefore, it can be said that 60 grams of silicon dioxide is giving rise to 104 grams of silicon tetrafluoride. So, 2.339 grams of silicon dioxide will generate,
As w is the weight of silicon tetrafluoride produced, so with the help of cross-multiplication we get,
60 × w = 2.339 × 104
w = 2.339 × 104 / 60 = 4.054 grams is the theoretical yield. However, the actual yield is 2.675 grams. So, the percent yield will be,
Percent yield = actual yield / theoretical yield × 100
Percent yield = 2.675 grams / 4.054 grams × 100
Percent yield = 65.98 %
The theoretical yield would be 4.052 g while the actual yield is 2.675 g
The reaction between SIO2 with HF can be represented by the following equation:
\(SiO_2 + 4HF ---> 2H_2O + SiF_4\)
The ratio of SiO2 reacted to SiF4 produced is 1:1.
Theoretically:
mole of 2.339 SiO2 = mass/molar mass
= 2.339/60.08
= 0.00389 moles
Thus, equivalent mole of SiF4 = 0.00389 moles
Mass of 0.00389 moles of SiF4 = mole x molar mass
= 0.00389 x 104.0791
= 4.052 g
Hence, the theoretical yield is 4.052 g while the actual yield is 2.675 g
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10. You have 700 grams of Ni3(PO3)2. How many particles are present?
Answers
1) List the quantities.
Sample: 700 g Ni3(PO3)2
2) Convert gramas of Ni3(PO3)2 to moles of Ni3(PO3)2.
The molar mass of Ni3(PO3)2 is 334.0241 g/mol.
\(mol\text{ }Ni_3(PO_3)_2=700\text{ }g\text{ }Ni_3(PO_3)_2*\frac{1\text{ }mol\text{ }Ni_3(PO_3)_2}{334.0241\text{ }g\text{ }Ni_3(PO_3)_2}=2.10\text{ }mol\text{ }Ni_3(PO_3)_2\)3) Convert moles to particles.
1 mol = 6.022*10^23 particles.
\(parciles\text{ }Ni_3(PO_3)_2=2.10\text{ }mol\text{ }Ni_3(PO_3)_2*\frac{6.022*10^{23}\text{ }particles\text{ }Ni_3(PO_3)_2}{1\text{ }mol\text{ }Ni_3(PO_3)_2}=1.26*10^{24}\text{ }particles\)700 g Ni3(PO3)2 is equal to 1.26*10^24 particles.
I
Based on the information below, which of the following are atoms of the same element? (mark all that apply)
Atom A
Atom B
Atom C
8 protons
8 neutrons
8 electrons
10 protons
10 neutrons
10 electrons
8 protons
10 neutrons
8 electrons
end
Answers
Based on the information below . The atoms of the same element are Atom A and Atom C .
Atoms of same element have the same atomic number. so the number of protons and electron are same but they have different atomic masses called as Isotopes. so, the atoms having different number of neutron will have different masses.
In the given case ,
Atom A Atom B Atom C
8 protons 10 protons 8 protons
8 neutrons 10 neutrons 10 neutrons
8 electrons 10 electrons 8 electrons
so, In Atom A and Atom C , the number of protons and electrons are same but the have different atomic masses means having different no. of neutrons. so Atom A and Atom C are the atoms of same elements.
Hence,Based on the information below . The atoms of the same element are Atom A and Atom C.
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What size volumetric flask would you use to create a 1.00M solution using 166.00 g of KI?
Answers
Answer:
A 1 liter volumetric flask should be used.
Explanation:
First we convert 166.00 g of KI into moles, using its molar mass:
Molar mass of KI = Molar mass of K + Molar mass of I = 166 g/mol
166.00 g ÷ 166 g/mol = 1 mol KIThen we calculate the required volume, using the definition of molarity:
Molarity = moles / litersLiters = moles / molarity
1 mol / 1.00 M = 1 LPlease help, its due today! I'll also make you brainiest (put them in an order that's simple, look at the picture and you'll see what I mean) Thank you and God bless! <33
On beaches there are often areas of grassy dunes where people are prohibited from walking. How do these protected areas preserve ecosystem services? Use the graphic organizer to categorize the following as either examples of land reclamation of protecting biodiversity.
Answers
Answer:
Preventing erosion – Land Reclamation
Protecting nesting areas – Protecting Biodiversity
Preventing littering – Land Reclamation
Preventing habitat disruption – Protecting Biodiversity
Protecting native species – Protecting Biodiversity
Preventing contamination of soil – Land Reclamation
Explanation:
I really hope I'm right! I tried my hardest, please give me brainliest :)
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Rank the solutions in order of decreasing [H3O+]. Rank solutions from largest to smallest hydronium ion concentration.
a. 0.10 M HNO3HNO3
b. 0.10 M HClO2HClO2
c. 0.10 M HCNHCN
d. 0.10 M HC2H3O2
Answers
Which reaction would most likely require the use of an inert electrode
Answers
The reaction that would most likely require the use of an inert electrode is a reaction involving highly reactive substances or species that can react with or be oxidized by the electrode material itself.
One such reaction that often requires the use of an inert electrode is the electrolysis of aqueous solutions containing halide ions (Cl-, Br-, I-). When halide ions are electrolyzed, they can undergo oxidation at the anode, resulting in the formation of halogen gas (Cl2, Br2, I2). However, these halogens are highly reactive and can react with many common electrode materials, such as metals, leading to unwanted side reactions.
To prevent these undesired reactions, an inert electrode, usually made of materials such as platinum, gold, or graphite, is employed. Inert electrodes do not react with the halogen gases formed during electrolysis, allowing the desired reaction to take place without interference from the electrode material itself.
For example, in the electrolysis of a sodium chloride (NaCl) solution, chloride ions (Cl-) can be oxidized at the anode to form chlorine gas (Cl2). To ensure that the chlorine gas is produced without any reactions involving the anode material, an inert electrode like platinum or graphite is used.
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what will happen to the sugar when mixed to liquid?
Answers
Answer:
Heres the answer.
Explanation:
When you stir a spoonful of sugar into a glass of water, you are forming a solution. This type of liquid solution is composed of a solid solute, which is the sugar, and a liquid solvent, which is the water. As the sugar molecules spread evenly throughout the water, the sugar dissolves.
At 25 ∘C
, the equilibrium partial pressures for the reaction
A(g)+2B(g)↽−−⇀C(g)+D(g)
were found to be A=5.63
atm, B=5.00
atm, C=5.47
atm, and D=5.63
atm.
What is the standard change in Gibbs free energy of this reaction at 25 ∘C
?
Answers
The standard change in Gibbs free energy of the reaction at 25 ∘C is -1.69 kJ/mol.
What is standard change?
To find the standard change in Gibbs free energy of the reaction, we need to use the following equation:
ΔG° = -RT ln(K)
where ΔG° is the standard change in Gibbs free energy, R is the gas constant (8.314 J/mol·K), T is the temperature in Kelvin (25 °C = 298 K), and K is the equilibrium constant.
To find K, we need to use the equilibrium partial pressures:
K = (PC × PD) / (PA × PB²)
where PA, PB, PC, and PD are the equilibrium partial pressures of A, B, C, and D, respectively.
Substituting the values, we get:
K = (5.47 atm × 5.63 atm) / (5.63 atm × (5.00 atm)²)
K = 0.6176
Now we can calculate the standard change in Gibbs free energy:
ΔG° = -RT ln(K)
ΔG° = -(8.314 J/mol·K) × (298 K) × ln(0.6176)
ΔG° = -1,690 J/mol or -1.69 kJ/mol
Therefore, the standard change in Gibbs free energy of the reaction at 25 ∘C is -1.69 kJ/mol.
What is free energy?
Free energy, also known as Gibbs free energy, is a thermodynamic quantity that represents the amount of energy in a system that is available to do work at a constant temperature and pressure. It is denoted by the symbol G and is expressed in units of joules (J) or calories (cal).
In simple terms, free energy is the energy that can be used to do work. It is defined by the equation:
ΔG = ΔH - TΔS
where ΔH is the change in enthalpy (heat content) of the system, ΔS is the change in entropy (disorder) of the system, and T is the absolute temperature in Kelvin.
If ΔG is negative, the reaction is spontaneous and can proceed without the input of external energy. If ΔG is positive, the reaction is non-spontaneous and requires energy input to proceed. If ΔG is zero, the system is at equilibrium.
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The passage's author most vividly conveys the sense that Plumpp's poetry is like music when he
O uses words like "swing," "dance," and "sway" to characterize phrases in Plumpp's poems
O defines Plumpp as "the poet laureate of Chicago jazz and blues"
explains how long Plumpp has been writing about "Chicago jazz giants"
urges people to read Plumpp's poems and listen to the music Plumpp "immortalizes in print"
Answers
It is an amine, and it has less polar nitrogen-hydrogen and oxygen-hydrogen bonds.
A compound's boiling point is a physical characteristic. These intramolecular linkages between the molecules that make up a chemical affect these physical characteristics.
Alcohols and amino acids have the same kind of intermolecular linkages. The hydrogen bond is the name of this kind of bond.
The electrical attraction between a hydrogen atom from one molecule and an electronegative atom from a nearby molecule is known as a hydrogen bond.
The strength of the bond is in the following order: H.....F > H.....O > H......N
The H....N hydrogen bonds exist in amines, whereas the H....O hydrogen bonds exist in alcohols.
Consequently, the alcohol's hydrogen bonds are stronger and it will impart a higher boiling point on the compound.
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Answer:uses world like
Explanation: