The given chemical processes' rate laws are discovered to depend on the [NH2Cl] [NH3] step.
The rate law is it affected by concentration?The amount of each reactant in a reaction has an impact on how quickly it occurs. The relationship between a chemical reaction's rate and the concentration of its reactants can be quantitatively represented using rate laws (also known as differential rate laws) or rate equations.
How is the limiting rate of a reaction determined?Rate-limiting reactions are those that occur last in a series of reactions and are the slowest. It is employed to calculate the rate law for the entire reaction.
According to the given information:NH2Cl + NH3 => N2H5+ + Cl- => rate limiting step of the chemical reaction
Rate law => K [A]^x [B]^y
=> k2 [NH2Cl ] [NH3]
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Because Carlos had always done well in school, he knew that his parents and teachers
True or false: Molecular compounds are formed by the sharing of electrons between ions.
false, correction : molecular compounds are formed by the sharing of electrons between metals or non metals
The symptom substitution conflict highlights a disagreement between psychoanalytic and behavioral theories concerning the
The symptom substitution conflict highlights a disagreement between psychoanalytic and behavioral theories concerning the causes of behavior.
About Psychoanalytic theoryThis is a theory that discusses the nature and development of human personality. The main elements in this theory are motivation, emotions and other aspects of personality.
The basis of psychoanalytic theory is to assume that personality will begin to develop when conflicts occur from the psychological aspects themselves. These symptoms usually occur in children or at an early age. Then Sigmund Freud's opinion about human personality is based on the experiences of his patients.
Sigmund Freud is a psychological scientist known for his ideas about human personality based on the analysis of his dreams, and his extensive reading of various scientific and human literature.
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A gas has a pressure of 1.43 atm and occupies
a volume of 7.7 L. If the gas is compressed to
a volume of 1.64 L, what will its pressure be,
assuming constant temperature?
According to Boyle's law, after compression the pressure of gas is 6.71 atmospheres.
What is Boyle's law?Boyle's law is an experimental gas law which describes how the pressure of the gas decreases as the volume increases. It's statement can be stated as, the absolute pressure which is exerted by a given mass of an ideal gas is inversely proportional to its volume provided temperature and amount of gas remains unchanged.
According to the equation the unknown pressure and volume of any one gas can be determined if two gases are to be considered.That is,
P₁V₁=P₂V₂ on substitution P₂= 1.43×7.7/1.64= 6.71 atmospheres
Thus, after compression the pressure of gas is 6.71 atmospheres.
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Colligative properties are those that depend on the number of particles dissolved in a solvent. The more particles in the solvent, the greater the effect the solute has on the properties of the solution. Examples of colligative properties include boiling point elevation, freezing point depression, vapor pressure depression, and osmotic pressure. Which aqueous solution has the lowest boiling point? 0.50 m MgBr2
0.75 m glucose
0.35 m Naci
0.20 m AICI3 I DON'T KNOW YET
0.20 M AICl3 has the lowest boiling point due to the lowest concentration of solute particles in the solvent.
The boiling point of a solution depends on the concentration of solute particles in the solvent. The more particles there are, the more energy is required to separate them, which raises the boiling point. Thus, a solution with a lower concentration of solute particles will have a lower boiling point compared to a solution with a higher concentration of solute particles. In this case, 0.20 M AICl3 has the lowest concentration of solute particles, so it will have the lowest boiling point.
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the nurse is teaching a nutrition class. the nurse recognizes that the students understand the lesson when one student makes which of the following statements?
One of the statements of students who understand lessons about nutrition is ''from now on I will eat vegetables and fruits.
What is nutrition?Nutrition is the supply of materials or food that organisms and cells need to survive. While in the scientific and medical fields, nutrition can refer to the science or practice of consuming and using food.
There are two types of nutrients that are important to the human body, namely macronutrients, and micronutrients.
Macronutrients include carbohydrates, fats, proteins, fiber, and water. Meanwhile, micronutrients are minerals and vitamins. So one source of nutrition is also found in fruits and vegetables which function as fiber.
Your question is not complete, maybe what your question means is :
The nurse is teaching a nutrition class. the nurse recognizes that the students understand the lesson when one student makes which of the following statements?
''From now on I will eat vegetables and fruits."''I will still eat my favorite food.''Learn more about the differences between autotrophic nutrition and heterotrophic nutrition here:
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Can you help me with this I can’t fully get it
The other answer are
41%
50%
33%
Thank u
The percent yield of the reaction is 50 %.
What is the percent yield?We know that we have to use the balanced reaction equation so as to solve the problem that we have at hand here now.
We know that;
Number of moles of oxygen = 160 g/32 g/mol
= 5 moles
We now know that the liming reactant in this case is the oxygen. Thus we can be able to write here that;
Thus we know that the theoretical yield of the CO2 = 3 * 44 = 132 g
The percent yield = 66/132 * 100
= 50 %
This is the percent of the product that we can be able to obtain.
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You decide it is time to clean your pool since summer is quickly approaching. Your pool maintenance guide specifies that the chlorine, Cl2 , concentration of the pool should be between 1 and 3 ppm . In order to determine if your pool is safe to swim in, you send a sample of pool water to a chemist for analysis of the Cl2 content. The chemist reports a chlorine concentration of 3.51×10−5 M
.
Convert the concentration of Cl2 to parts per million ( ppm ).
Parts per million (ppm) is indeed a typical concentration measurement for tiny values. Therefore, the concentration of Cl[tex]_2[/tex] to parts per million is 19 ppm.
What is parts per million?Parts per million (ppm) is indeed a typical concentration measurement for tiny values. One part per million, or 10-6, is one component solute to one million parts solvent. Parts per million, as well as various other "parts per" annotation (for example, parts every billion as well as parts per trillion), are dimensionless numbers with no units.
the atomic mass of Cl[tex]_2[/tex]= 70 g/mol
moles/L of Cl[tex]_2[/tex] = (3.51×10⁻⁵ mol x 63.55 g/mol)/L
moles/L of Cl[tex]_2[/tex] = 1.9 x 10-2 g/L
moles/L of Cl[tex]_2[/tex] = 1.9 x 10-2 g/L x 1000 mg/1 g
moles/L of Cl[tex]_2[/tex] = 19 mg/L
In dilute solutions 1 ppm = 1 mg/L.
moles/L of Cl[tex]_2[/tex] = 19 ppm
Therefore, the concentration of Cl[tex]_2[/tex] to parts per million is 19 ppm.
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163 ml of hydrogen gas, measured at 23°C and 1.5 atm pressure, and 249 ml of nitrogen gas,
measured at 23°C and 2.6 atm pressure, were forced into the 163 ml container at 23°C, what
would be the pressure (in atm) of the mixture of gases now in the 163 mil container? Enter to 2
decimal places.
The total pressure is 3.9 atm
What is the ideal gas equation?We would have to use the idea gas equation in each case;
Number of moles of the hydrogen = 1.5 * 0.163/0.082 * 296
= 0.24/24.3
= 0.0099 moles
Number of moles of nitrogen = 2.6 * 0.163/0.082 * 296
n = 0.017 moles
Now we know from the Dalton's law that when we mix the gases that the total pressure is the pressure in each of the vessels summed up.
Hence the total pressure is; 1.6 + 2.3 = 3.9 atm
It would have a total pressure of about 3.9 atm.
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Which of the following compounds have both polar covalent and ionic bonds? OA. NH4Br O B. H202 OC. HCN OD.H25 O E. None of these.
NH₄Br has both polar covalent and ionic bonds. The ionic bond is formed between the NH₄+ and Br- ions, and the polar covalent bond is formed between the N and the 4 H atoms.
H₂0₂, HCN, and H₂₅ do not have both polar covalent and ionic bonds, so the correct answer is None of these.
In addition to the polar covalent and ionic bonds, NH₄Br also contains hydrogen bonds. These hydrogen bonds are formed between the hydrogen atoms in the NH₄+ and Br- ions, and they help stabilize the ionic bond between them.
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When a uranium nucleus at rest breaks apart in the process known as fission in a nuclear reactor, the resulting fragments have a total kinetic energy of about 200 MeV.How much mass was lost in the process?
The loss of mass in the process of fission can be calculated using Einstein's famous equation, E = mc^2, where E is the energy, m is the mass, and c is the speed of light.
The total kinetic energy of the fragments after fission is 200 MeV, which is equivalent to [tex]200 x 10^6 eV[/tex]. Converting this to joules, we have 2[tex]00 x 10^6 eV x 1.6 x 10^-19 J/eV = 3.2 x 10^-13 J.[/tex]
Using E = mc^2, we can find the mass lost in the process: [tex]m = E/c^2 = (3.2 x 10^-13 J) / (3 x 10^8 m/s)^2 = 2.3 x 10^-25 kg.[/tex]
So, the mass lost in the process of fission is approximately [tex]2.3 x 10^-25[/tex]kilograms. This mass loss is converted into the energy released in the form of kinetic energy of the fragments, heat, and light.
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Calcium carbonate (CaCO3) dissolves in water and has a solubility product of 5 x 10-9 M2/L2. the solubility product is given by the expression:a. Ksp - Ca2+)?(CO32-12 Ksp - [Ca2+32 (0032-32 / (CaCO3) Ksp - [Ca2+1 100321 Od Ksp - [Ca 2+1 1003?1/(CaCO3
Solubility=7.07×10⁻⁵mole/L.
What is solubility of a product?The solubility product constant is the equilibrium constant for a solid dissolving into an aqueous solution. The letter Ksp is used to represent it.Temperature affects the value of the solubility product, which is a type of equilibrium constant. Ksp typically rises when temperature rises as a result of an increase in solubility.The ability of a substance, known as a solute, to dissolve in a solvent and create a solution is known as solubility. Ionic compounds, which separate into cations and anions, are very variable in terms of how soluble they are in water. While some molecules are highly soluble and may even take in atmospheric moisture, others are insoluble.
K_{sp} = [A^+]^a [B^-]^b
K_{sp} = is the solubility product constant
A^+ = is the cation in an aqueous solution
B^- = is an anion in an aqueous solution
a, b = is the relative concentrations of a and b
CaCO3→Ca² ⁺+CO²₃⁻
The Solubility product of CaCO3⟹Ksp =5×10⁻⁹
If Solubility= s , then Solubility Product =s² =5×10⁻⁹
Therefore,
Solubility=7.07×10⁻⁵mole/L
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Solubility of the product is =7.07×10⁻⁵mole/L.
What is solubility of a product?The solubility product constant is the equilibrium constant for a solid dissolving into an aqueous solution. The letter Ksp is used to represent it.Temperature affects the value of the solubility product, which is a type of equilibrium constant. Ksp typically rises when temperature rises as a result of an increase in solubility.
The ability of a substance, known as a solute, to dissolve in a solvent and create a solution is known as solubility. Ionic compounds, which separate into cations and anions, are very variable in terms of how soluble they are in water. While some molecules are highly soluble and may even take in atmospheric moisture, others are insoluble.
[tex]\mathrm{K_{sp} = [A^+]^a [B^-]^b}[/tex]
[tex]\mathrm{K_{sp}}[/tex] = is the solubility product constant
A⁺ = is the cation in an aqueous solution
B⁻ = is an anion in an aqueous solution
a, b = is the relative concentrations of a and b
CaCO3 → Ca² ⁺+CO²₃⁻
The Solubility product of CaCO3⟹Ksp =5×10⁻⁹
If Solubility= s , then Solubility Product =s² =5×10⁻⁹
Therefore,
Solubility = 7.07×10⁻⁵ mole/L
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3 cu 8hno3 --> 3 cu(no3)2 2 no 4 h2o in the above equation how many moles of water can be made when 137.6 grams of hno3 are consumed? round your answer to the nearest tenth.
0.9 moles of water can be made when 137.6 grams of hno3 are consumed.
The mole, symbol mol, is the unit of amount of substance in the International System of Units. The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample. The mole is defined as containing exactly 6.02214076×10²³ elementary entities.
1 mole of HNO3 means 63g HNO3 and we have, 8 moles HNO3
To calculate moles of water can be made when 137.6 grams of hno3 are consumed,
112.6g HNO3 x 1 mole HNO3 x 4 moles H2O = 0.9 moles H2O
0.9 moles of water can be made when 137.6 grams of hno3 are consumed.
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The mole (abbreviated mol) is the SI measure of quantity of a "chemical entity," such as atoms, electrons, or protons. It is defined as the amount of a substance that contains as many particles as there are atoms in 12 grams of pure carbon-12. So, 1 mol contains 6.022×1023 elementary entities of the substance. True/False?
The given statement is true. When calculating the volume of a compound, the molar mass must be used instead of the equation.
Additionally, the equation only works for substances with a constant density, as variations in temperature and pressure can cause the density of a substance to change. In such cases, it is important to adjust the equation accordingly to account for these changes.
To adjust the equation for temperature and pressure variations, one must use the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature and molar mass. This means that if the temperature and/or pressure of a substance is increased, the molar mass must also be increased to compensate for the change in the density.
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Use what you know about plate tectonics to explain the current
position of India, why Everest should still be growing, and why
marine fossils are found at its summit.
In fact Indian plate is moving constantly and currently located in the equator in the Eastern Hemisphere. The rocks of the Mount Everest was once sediments on the ocean floor , which made the marine fossils at its summit.
What is tectonic movement ?The tectonic plates of earth are moving in different manner in each regions of earth due to the flow of the hot magma inside the mantle of earth. That make the position of each continents and countries vary slightly in each year.
The Indian Plate is a small tectonic plate that spans the Equator in the Eastern Hemisphere. India, which was formerly a part of the ancient continent Gondwana, broke apart from the rest of Gondwana and began drifting north 100 million years ago.
The Indian Plate includes much of South Asia (the Indian subcontinent) as well as a portion of the basin beneath the Indian Ocean. The rocks of Everest was formed from the sediments of the ocean floor that made the marine fossils.
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In a study to determine the rate of the following reaction:
2NO(g) + O₂(g) → 2NO₂(g)
the concentration of NO was 0.0450 M at t= 5.0 s and 0.0225 M at t= 650.0 s. What is the average rate of the reaction during this time period?
3.68*10-5 m/s is the average rate of the reaction during this time period.
What is rate of reaction?
A rate of reaction is the speed at which a chemical reaction takes place. It is usually expressed as the change in the concentration of a reactant or product per unit time. The rate of a reaction is determined by many factors, including the physical state of the reactants, the temperature, the concentration of the reactants, the presence of a catalyst, and the surface area of the reactants that are in contact with each other.
2NO(g)+O2(g) -> 2NO_2(g)
Rate = -1/2 d[No]/dt
Average Rate = -1/2[0.0225-0.0700/650-5]
= 3.68*10^-5 m/s
Therefore, 3.68*10-5 m/s is the average rate of the reaction during this time period.
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If a hydrogen (H) atom and a helium (He) atom travel at the same speed, which of the following is true about the de Broglie wavelengths of theA) The H atom is about 2 times longer than the He atom.
B) The H atom is approximately the same as the He atom.
C) The H atom is about 4 times longer than the He atom.
D) The He atom is about 2 times longer than the H atom.
E) The He atom is about 4 times longer than the H atom. atoms?
The de Broglie wavelengths of a hydrogen atom are around four times longer than a helium atom's if they move at the same speed.
The de Broglie wavelength is a fundamental concept in quantum physics. The wavelength () associated with an object in relation to its momentum and mass is known as the De Broglie wavelength. Typically, a particle's force and de Broglie wavelength are inversely related. It is asserted that matter has properties that are similar to both waves and particles. De Broglie waves are properties of a material thing that change over time or space while behaving like waves. They bear the discoverer Louis de Broglie's name. Additionally known as matter-waves. It is quite similar to the experimental evidence supports the dual nature of light, which exhibits both particle and wave behavior.
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Which of the following is a TRUE statement?
A) Bond dissociation energies are exothermic.
B) Bond dissociation energies are endothermic.
C) All C-H bonds require the same energy
amount of energy to break.
D) All C-H bonds release the same amount of
energy when formed.
Bond dissociation energies are endothermic.
What is bond dissociation energy?
The bond dissociation enthalpy can be used to measure the strength of the chemical link between any two species. The bond dissociation energy of a chemical bond is sometimes defined as the enthalpy change of the homolytic fission of the bond at absolute zero, even though it is typically measured as the enthalpy change at standard conditions (298K) (0K).
Hence, bond dissociation energies are endothermic in nature.
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A semipermeable membrane is placed between the following solutions. Which solution will decrease in volume?Solution A: 4 % (m/v) starchSolution B: 4.94 % (m/v) starchA semipermeable membrane is placed between the following solutions. Which solution will increase in volume?Solution C: 5.17 % NaClSolution D: 14.0 % NaCl
A semipermeable membrane is placed between the following solutions. Solution D will increase in volume.
What is volume?
Volume is a measure of the amount of space an object or substance occupies. It is most commonly measured in cubic units, such as cubic inches or cubic centimeters. Volume is a calculation of the 3-dimensional amount of space enclosed by an object or substance, and is typically found by calculating the area of one side of the object or substance and multiplying it by the object's height. Volume can be used to measure solid objects, liquids, and gases. It can also be used to measure the amount of material present in a space, such as the amount of water in a swimming pool or the amount of air in a room.
This is because the semipermeable membrane will allow the solvent (water) to move from the solution with a lower concentration of solutes (solution C) to the solution with a higher concentration of solutes (solution D), increasing the volume of solution D.
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Which of the following reagents or sequences do not produce an alcohol or diol from an alkene starting material?
A)H+, H2O
B)HCO3H
C)BH3.THF followed by H2O2, NaOH
D)Hg(OAc)2, H2O followed by NaBH4
E) OsO4, H2O2
The reagent or sequence that does not produce an alcohol or diol from an alkene starting material is HCO3H. So, the correction option is B.
HCO3H is the only reagent or sequence that does not produce an alcohol or diol from an alkene starting material.
While the options are incorrect because:
A) H+, H2O can produce an alcohol by addition of water to an alkene.
C) BH3.THF followed by H2O2, NaOH can produce an alcohol via reduction of the alkene.
D) Hg(OAc)2, H2O followed by NaBH4 can produce a diol via addition of two equivalents of water to the alkene.
E) OsO4, H2O2 can produce an alcohol by reduction of an epoxide intermediate.
In summary, B) HCO3H is the only reagent or sequence that does not produce an alcohol or diol from an alkene starting material.
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Does this chemical reaction describe water hydrogen plus oxygen
Answer: Formation of water from hydrogen and oxygen is a combination reactionbecause hydrogen and oxygen are combining to form single product. The reaction occurs as follows: 2H2(g)+O2(g)→2H2O(l)
Explanation:
Gaseous butane (CH₂(CH₂)₂CH₂) will react with gaseous oxygen (0₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). Suppose 30.8 g
of butane is mixed with 74. g of oxygen. Calculate the minimum mass of butane that could be left over by the chemical reaction. Be sure your answer has the
correct number of significant digits.
The minimum amount of butane that could be left over by the chemical reaction would be 10.12 grams.
Stoichiometric problemThe equation of the reaction would be as follow:
[tex]2C_4H_{10} + 13O_2 -- > 8CO_2 + 10H_2O[/tex]
Mole ratio of butane to oxygen = 2:13
Mole equivalence of 30.8 g of butane = 30.8/58.12 = 0.5299 mol
Mole equivalence of 74 g of oxygen = 74/32 = 2.3125 mol
From the mole ratio, the actual amount of butane required for 2.3125 mol of oxygen:
2/13 x 2.3125 = 0.3558 mol
Excess mol of butane = 0.5299 - 0.3558 = 0.1741 mol
Mas of 0.1741 mol butane = 0.1741 x 58.12
= 10.12 grams
In other words, the minimum mass of butane that could be left over by the chemical reaction is 10.12 grams.
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Question 3 of 10
Which type of bond is found in an alkene?
OA. Single and triple
OB. Single and double
O C. Double only
O D. Single only
Answer: single and double
Explanation:
they was wrong for mine
modify the molecule to show the products formed by the hydrolysis of the following triacylglycerol. add or remove atoms or bonds as needed. show all hydrogen atoms.
To modify the molecule to show the products formed by the hydrolysis of the triacylglycerol, you need to add bonds to the glycerol backbone, as well as remove the fatty acid chains.
This will result in the formation of three molecules of fatty acid and one molecule of glycerol. Additionally, you will need to show all hydrogen atoms in the molecule.
To illustrate this, you can draw a glycerol molecule with three fatty acid chains attached to it. Once the hydrolysis reaction has occurred, the fatty acid chains will be detached from the glycerol molecule, resulting in three molecules of fatty acid and one molecule of glycerol. Additionally, all hydrogen atoms should be shown in the molecule.
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How many grams of mercury, hg are in 1.19 x 10^23 atoms of mercury?
Give steps and explanation pls.
39.8 grams of mercury, hg are in 1.19 x 10^23 atoms of mercury.
Explain about atoms of mercury?
Atoms of mercury are the smallest and most basic particles of the element mercury. They consist of a single proton, a single electron, and no neutrons. The proton and electron of the mercury atom are held together by the strong nuclear force, which is the strongest force in the universe. The element mercury has an atomic number of 80, meaning that it has 80 protons and 80 electrons. Mercury atoms have a diameter of about 0.2 nanometers, which is about one-millionth the size of a grain of sand. They are so small that they can only be seen with a powerful microscope.
Step 1: Convert atoms to moles
One mole of any substance contains Avogadro's number of atoms (NA), which is defined as 6.022 x 10^23 atoms. Hence, the number of moles can be calculated as follows:
moles = number of atoms / Avogadro's number
For 1.19 x 10^23 atoms of mercury, the number of moles would be:
moles = 1.19 x 10^23 atoms / 6.022 x 10^23 atoms/mole = 0.1983 moles
Step 2: Convert moles to grams
The molar mass of a substance is defined as the mass in grams of one mole of the substance. For mercury, the molar mass is 200.59 g/mol.
To convert the number of moles to grams, we simply multiply the number of moles by the molar mass:
grams = moles x molar mass
For 0.1983 moles of mercury, the number of grams would be:
grams = 0.1983 moles x 200.59 g/mol = 39.8 grams
Therefore,39.8 grams of mercury.
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A galvanic cell is powered by the following redox reaction:
2IO₃⁻ (aq) + 12H⁺ (aq) + 10Cu⁺ (aq) → I₂ (s) + 6H₂O (I) + 10Cu²⁺ (aq)
Answer the following questions about this cell.
1. Write a balanced equation for the half-reaction that takes place at the cathode.
2.Write a balanced equation for the half-reaction that takes place at the anode.
3.Calculate the cell voltage under standard conditions. Round your answer to 2 decimal places.
Half-reaction at the cathode:
part 1.
The half-reaction at the cathode is the reduction of Cu2+ ions to Cu+ ions:
10Cu2+ (aq) + 2e- → 10Cu+ (aq)
part 2.
Half-reaction at the anode:
The half-reaction at the anode is the oxidation of IO3- ions to I2:
2IO3- (aq) → I2 (s) + 6e-
part 3.
The cell voltage under standard conditions is -0.20 V.
What is cell voltage?The difference in the electrical potential between two electrodes is described as the cell voltage.
The cell voltage under standard conditions is equal to the difference between the standard reduction potentials of the half-reactions:
Ecell = E°cathode - E°anode
Ecell = 0.34 V - (+0.54 V)
Ecell = -0.20 V
Rounding off to 2 decimal places:
Ecell = -0.20 V
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Suppose an alpha particle (composed of 2 protons and 2 neutrons) is given 482.0 keV of kinetic energy
An alpha particle is a particle composed of two protons and two neutrons. When given 482.0 keV of kinetic energy, the alpha particle will move at a high velocity.
This energy can be converted into other forms of energy, such as potential energy, depending on the situation. For example, if the alpha particle were approaching a massive object, some of the kinetic energy would be converted into potential energy as the particle moves closer to the object.
In addition, the alpha particle will also interact with other particles in its environment. When it collides with other particles, its kinetic energy can be converted into thermal energy, resulting in an increase in temperature.
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An advertisement for a commercial hand warmer claims that the hand warmer works because a chemical reaction in the hand warmer draws out the body's own natural heat, causing a warming effect. Which of the following states the accuracy of the claim in the advertisement and best provides a correct scientific justification of the claim?
a. The advertisement's claim is inaccurate because heat flowing from the hands to the warmer would only happen if the chemical reaction was endothermic, which would cause the hands to feel colde
The assertion made in the advertising is untrue because heat can only travel from the hands to a warmer if a chemical reaction is endothermic, which would make the hands feel colder. The promise made in the advertising is untrue because heat could only transfer from the hands to a warmer if a chemical reaction was exothermic, which would make the hands feel colder. The claim made in the commercial is true because heat would only transfer from the hands to the warmer if the chemical reaction was endothermic, which would make the hands feel warmer.
The promise made in the commercial is untrue since heat could only transfer from the hands to the warmer if the chemical process was endothermic, which would make the hands feel colder.
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when 0.20 m nh4cl (aq) and 0.20 m naoh(aq) are mixed, the reaction represented by the equation above occurs and a strong smell of ammonia, nh3 is observed. based on this information, which of the following statements is true? And Why?
A) NH4 + (aq) acts as abronsted-Lowry
B) NH4 + (aq) is a stronger acid than H20
C) NH3(aq) is a stronger base than 0H+(aq)is
D) NH4+(aq) and CL(aq)are a conjugate acid base pair
The correct answer is D) NH₄+(aq) and Cl-(aq) are a conjugate acid-base pair, because, When NH4Cl(aq) is mixed with NaOH(aq), NH₄+ (aq) acts as a Bronsted-Lowry acid and reacts with the NaOH(aq) to form NH₃(aq) and Cl-(aq).
NH₃(aq) is a weaker base than OH-(aq), and NH₄+ (aq) is a weaker acid than H₂O, so neither of the other two options is correct.
The acid-base reaction also results in the formation of a salt, in this case NH₄Cl. This salt is composed of the conjugate acid (NH₄+) and the conjugate base (Cl-). This type of reaction is known as a neutralization reaction, as the result of the reaction is a neutral solution.
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When using a 10 ml graduated cylinder, it is initially filled with approximately how many milliliters of water?
5ml or 10ml