Answers
If ln(x) = 3.11, the value of x is 22.64. it has 4 significant figures.
In positional notation, significant figures are the digits in a number that is trustworthy and required to denote the amount of something. The correctness and precision of numbers are the focus of significant figures, also known as significant digits, which are crucial components of scientific and mathematical calculations.
significant figures play a crucial role when estimating the degree of uncertainty in the outcome. The number of digits that can be determined with some degree of certainty is relevant to significant figures. When compiling data from an experiment, keeping track of this number is crucial because it reduces mistakes.
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Related Questions
At room temperature 20 Celsius and object had a mass of 25g and displaces 15 mL water in a cylinder. what is it’s density? If the object was cooled to point where it had only half of its original thermal energy. What would be it’s temperature in Kelvin and Celsius?
Answers
Answer:
Density = 1.67 g/cm³
New Temperature = 10°C ⇔ 283K
Explanation:
a. Density of a substance can be described as the mass (in grams) of a substance per litre (in mL or cm³) of liquid displaced.
Hence: Density = mass ÷ volume
Density = 25 ÷ 15
Density = 1.67 g/cm³
b. If the object is cooled to half of its original temperature, the new temperature is assumed to be half of the room temperature
Hence, the substance's new temperature will be = 20÷2
=10°C ⇔ 283K (i.e 10 + 273)
A team of engineers has decided to design a new shoe for people suffering
from a painful foot condition. Which of the following tasks should the team
undertake during the process of researching the condition?
A. Find a rubber manufacturer to design the sole of the new shoe.
B. Determine how much potential consumers would be willing to pay
for this new product.
C. Test the shoe in a trial.
D. Consult with an orthopedist about how to best accommodate
potential consumers in terms of physical comfort and pain
alleviation.
Answers
D. Consult with an orthopedist about how to best accommodate potential consumers in terms of physical comfort and pain alleviation.
Researching the foot condition involves gaining knowledge about the condition, its causes, and its impact on individuals. Consulting with an orthopedist, who is a medical professional specializing in foot and ankle conditions, would provide valuable insights into how the shoe can best address the condition and alleviate pain. The other options, such as finding a rubber manufacturer and determining consumer willingness to pay, are important steps in the design and marketing process but should come after the research stage. Testing the shoe in a trial is also important but would come later in the product development process.
when 56.6 g of calcium and 30.5g of nitrogen gas under go a reaction that has 90% yield, what mass of calcium nitride is formed?
Answers
Answer:
152.57 g
Explanation:
The balanced chemical equation for the reaction between calcium and nitrogen gas to form calcium nitride is:
3Ca + N2 → Ca3N2
From the balanced equation, we can see that the mole ratio between calcium and calcium nitride is 3:1. This means that 3 moles of calcium react to form 1 mole of calcium nitride.
First, let's calculate the number of moles of calcium and nitrogen gas given:
Mass of calcium = 56.6 g
Molar mass of calcium (Ca) = 40.08 g/mol
Moles of calcium = Mass of calcium / Molar mass of calcium = 56.6 g / 40.08 g/mol = 1.41 mol
Mass of nitrogen gas = 30.5 g
Molar mass of nitrogen gas (N2) = 28.02 g/mol
Moles of nitrogen gas = Mass of nitrogen gas / Molar mass of nitrogen gas = 30.5 g / 28.02 g/mol = 1.09 mol
Since the reaction has a 90% yield, only 90% of the limiting reactant (which is calcium in this case) will be converted to product. Therefore, we need to multiply the moles of calcium by 0.90 to account for the yield:
Moles of calcium nitride formed = Moles of calcium x Yield = 1.41 mol x 0.90 = 1.27 mol
Now, using the mole ratio from the balanced equation, we can determine the mass of calcium nitride formed:
Molar mass of calcium nitride (Ca3N2) = 40.08 g/mol (molar mass of calcium) x 3 + 14.01 g/mol (molar mass of nitrogen) x 2 = 120.25 g/mol
Mass of calcium nitride formed = Moles of calcium nitride formed x Molar mass of calcium nitride = 1.27 mol x 120.25 g/mol = 152.57 g
So, the mass of calcium nitride formed in the reaction is 152.57 g.
What happened to the potential energy and the kinetic energy as the skater went up and down the ramp? Why does this happen?
Answers
How many protons and electrons does a hydrogen atom have?
Answers
A hydrogen atom contains 1 electron, 1 proton
Explanation:
Determine whether the following five molecules are polar or nonpolar and explain your answer:
a) Beryllium chloride b) Hydrogen sulphide c) Sulphur trioxide d) Water e) Trichloromethane
Answers
The following are categorized into polar or nonpolar molecules:
a) Beryllium chloride - nonpolar b) Hydrogen sulphide - polar c) Sulphur trioxide - nonpolar d) Water - polar e) Trichloromethane - polar How to determine polar or nonpolar?a) Beryllium chloride (BeCl₂) is a nonpolar molecule. The Be-Cl bond is polar due to the electronegativity difference between beryllium and chlorine, but the molecule is linear with the two polar bonds pointing in opposite directions, resulting in a net dipole moment of zero.
b) Hydrogen sulphide (H₂S) is a polar molecule. The H-S bond is polar due to the electronegativity difference between hydrogen and sulfur, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.
c) Sulphur trioxide (SO₃) is a nonpolar molecule. The S-O bonds are polar due to the electronegativity difference between sulfur and oxygen, but the molecule is trigonal planar with the three polar bonds pointing in different directions, resulting in a net dipole moment of zero.
d) Water (H₂O) is a polar molecule. The H-O bond is polar due to the electronegativity difference between hydrogen and oxygen, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.
e) Trichloromethane (CHCl₃) is a polar molecule. The C-Cl bonds are polar due to the electronegativity difference between carbon and chlorine, and the molecule has a tetrahedral shape, resulting in a net dipole moment that is not zero.
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The compound butanol has the following structural formula.
A string of 4 C atoms are bonded above, left, and below to H. The right-hand end is bonded to O, which in turn is bonded to H.
Which of these is a structural isomer of butanol?
A string of 4 C atoms are bonded above, below, left and right to H.
A string of 4 C atoms is bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H.
A string of 4 C atoms is bonded above, below, left, and right to H, but the chain is interrupted between the first and second C, which are bonded to an O between them.
A string of 4 C atoms is bonded above, below, and left to H, except the last C has no H below and is double-bonded to an O to the right.
Answers
The structural formula of butanol is C4H9OH. It consists of a chain of four carbon atoms, with a hydroxyl (-OH) group attached to one of the carbon atoms. Butanol has several structural isomers, which have the same molecular formula but different structural formulas.
A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of its atoms. A string of 4 C atoms are bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H is a structural isomer of butanol.
This is called butan-2-ol. The structural formula of butan-2-ol is CH3CH(OH)CH2CH3. In this isomer, the hydroxyl group is attached to the second carbon atom in the chain, whereas in butanol, the hydroxyl group is attached to the first carbon atom in the chain.
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Match the solution with the correct concentration.
Answers
Answer:
1. is Molar (with capital M)
2. is molal (m)
Explanation:
By definition, 1 Molar solutions have 1 mol of solute in 1 L of solution and 1 molal solutions have 1 mol of solute in 1 Kg of solvent
pOH of the 0.001M NaOH solution is
Answers
The pOH of the 0.001 M NaOH solution is approximately 3.
To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.
In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.
The pOH is calculated using the equation:
pOH = -log[OH-]
Substituting the concentration of hydroxide ions, we have:
pOH = -log(0.001)
Using a calculator, we can evaluate the logarithm:
pOH ≈ 3
Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.
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Plant cells have a strong, rigid outer layer known as the cell wall. The function of the cell wall is to -
help the cell maintain its shape under changing water pressure.
convert energy from sunlight into chemical energy,
regulate the transfer of material into the cell.
separate genetic material from the rest of the cell.
Answers
It's not the other answer!
The actual answer is the one involving structure/a
Consider the reaction of glucose with oxygen: C6H12O6(s) + 6O2(g) Right arrow. 6CO2(g) + 6H2O(l)
The enthalpy of formation (Delta.Hf) for C6H12O6(s) is –1,273.02 kJ/mol, Delta.Hf for CO2(g) is –393.5 kJ/mol, and
Delta.Hf for H2O(l) is –285.83 kJ/mol. What is Delta.Hf for O2(g)?
Which equation should be used to calculate Delta.Hrxn for this reaction?
(-393.5kJ/mol + (-285.83 kJ/mol))-(-1,273.02 kJ/mol)
-1,273.02 kJ/mol - ((6 mol)(-393.5 kJ/mol) + (6 mol)(-285.83 kJ/mol))
((6 mol)(-393.5 kJ/mol) + (6 mol)(-285.83 kJ/mol)) - (1 mol)(-1,273.02 kJ/mol)
What is Delta.Hrxn for this reaction?
answer: first, third, -2803
Answers
We can effectively that the correct equation of the reaction is correctly written as ((6 mol)(-393.5 kJ/mol) + (6 mol)(-285.83 kJ/mol)) - (1 mol)(-1,273.02 kJ/mol).
What is the heat of reaction?The heat of reaction is the heat that could be absorbed or evolved in a reaction. We know that a reaction could be an exothermic or an endothermic reaction. In an exothermic reaction, energy is given out while an endothermic reaction is one in which heat is absorbed.
Having said this, we know that the reaction is a combustion reaction. Heat is always given out in a combustion reaction thus we know that the process is exothermic and the sign of the heat of reaction is negative.
Let us now look at the reaction as shown, we can see that it involves the combustion or burning of glucose in oxygen. We now seek to obtain the correct equation for the combustion reaction.
Thus, we can now write effectively that the correct equation of the reaction is correctly written as ((6 mol)(-393.5 kJ/mol) + (6 mol)(-285.83 kJ/mol)) - (1 mol)(-1,273.02 kJ/mol).
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The specific heat capacity of graphite is 0.71 J/°C g.
Calculate the energy required to raise the temperature of 4.2 mol of graphite by 25.0°C.
Answers
Taking into account the definition of sensible heat, the energy required to raise the temperature of 4.2 mol of graphite by 25.0°C is 895.3455 J.
Definition of sensible heatSensible heat is defined as the amount of heat that a body absorbs or releases without changes in its physical state (phase change). In other words, when a system absorbs (or gives up) a certain amount of heat, it can happen that it experiences a change in its temperature without a phase change occurring, which implies sensible heat.
The expression that allows to calculate heat exchanges is:
Q = c× m× ΔT
where:
Q is the heat exchanged by a body of mass m.c is the specific heat substance.ΔT is the temperature variation.Energy requiredIn this case, you know:
Q= ?c= 0.71 J/gCmolar mass of graphite= 12.01 g/molem= 4.2 moles× molar mass of graphite= 50.442 gramsΔT= 25 CReplacing in the definition of sensible heat:
Q = 0.71 J/gC× 50.442 g× 25 C
Solving:
Q= 895.3455 J
In summary, the energy required is 895.3455 J.
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In a common reaction in living things, glucose combines with oxygen to form carbon dioxide and water vapor. In an experiment on this reaction, the masses of glucose, oxygen, and carbon dioxide are measured. This data table shows the measurements. What is the mass of the water vapor? please help
Answers
Multiply the number of moles of glucose by the molar mass of water (18.015 g/mol) to find the mass of water vapor produced.
To determine the mass of water vapor produced in the reaction, we need to analyze the data provided in the data table. The reaction mentioned is the process of cellular respiration, where glucose (C6H12O6) combines with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). We can use the principle of conservation of mass to calculate the mass of water vapor produced.The data table should provide the initial masses of glucose and oxygen, as well as the final mass of carbon dioxide. From these measurements, we can calculate the mass of water vapor.First, determine the number of moles of glucose and oxygen by dividing their respective masses by their molar masses. Then, use the balanced equation for cellular respiration to determine the mole ratios between glucose, oxygen, carbon dioxide, and water.
The balanced equation for cellular respiration is:
C6H12O6 + 6O2 -> 6CO2 + 6H2O
Based on this equation, we know that for every mole of glucose, 6 moles of water are produced.In conclusion, by using the principles of conservation of mass and stoichiometry, you can calculate the mass of water vapor produced in the reaction based on the given measurements.
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To make 44 g of water you must combine 12 g of hydrogen and 32 g of oxygen if a chemist makes 120 g of water how many grams of oxygen and how many grams of hydrogen will be needed
Answers
Answer:
22.5g of water
Explanation:
the easy answer is if you add 4 grams and 20 grams then clearly the answer is 4+20=24 grams (I think the other answer is thinking about the H2 in H2O but he has managed to get an extra 4 grams from somewhere (which you cant really do by the way)).
but using my good friend stoichiometry we can use a method that will work for other, slightly harder questions as well.
first you work out the number of moles of hydrogen, which you do by doing 4g/the molar mass of H2 (2) which means you have 2 moles.
you can then do the same thing for O2. 20/32=0.625. oh no…
we have found that there are less moles of O2 than moles of H2, meaning that we have excess hydrogen. this means that we need to balance the equation first.
2H2 + O2 → 2H20
now we know that for every 1 mole of O2 we have 2 moles of H2O. so we multiply 0.635 by 2 to get the amount of moles of water we will have.
0.625 x 2 =1.25 moles of water
so we need to work out the mass of 1.25 moles of water. the molar mass of water is 16 (O) + 2 (H2) = 18g/mol
then we do 18 x 1.25 to get 22.5g of water
message me if you have any questions about the answer
enjoy :)
What is the total number of peaks due to singly charged ions in the complete mass
spectrum of chlorine, Cl2
?
A Two
B Three
C Four
D Five
Answers
Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\)
How many peaks do \(Cl_{2}\)'s molecular ions have?
The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.
The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance
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Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\).
How many peaks do 's molecular ions have?
The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.
The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance
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I have a balloon that has a volume of 0.5 L at a pressure of 0.5 atm. What is the new volume at a pressure of 1 atm?
I have a container at a volume of 2 L and at a temperature of 125 C. What is the new temperature of the container at a volume of 2 L?
A sample of helium gas in a balloon is compressed from 4.0 L to 2.5 L at a constant temperature. If the initial pressure was 3.0 atm at 4.0 L, what is the new pressure at 2.5 L?
A container has 50 mL of nitrogen at 25 C. What will be the volume if the new temperature if 60 C?
Answers
1)The new volume at a pressure of 1 atm is 0.25 L.
2)The new temperature of the container at a volume of 2 L is approximately 398°C.
3)The new pressure at 2.5 L is approximately 4.8 atm.
4)The new volume at a temperature of 60°C is approximately 55.8
1)To solve these gas law problems, we can use the ideal gas law equation, which states:
PV = nRT,
where P is pressure, V is volume, n is the number of moles of gas, R is the ideal gas constant, and T is temperature in Kelvin.
Balloon volume at a pressure of 0.5 atm:\(V_1\) = 0.5 L, \(P_1\)= 0.5 atm.
New volume at a pressure of 1 atm:\(P_2\) = 1 atm.
We can use the relationship\(P_1V_1 = P_2V_2\) to find the new volume (\(V_2\)).
(0.5 atm)(0.5 L) = (1 atm)(\(V_2\))
\(V_2\) = 0.25 L.
Therefore, the new volume at a pressure of 1 atm is 0.25 L.
2)Container volume: \(V_1\) = 2 L, \(T_1\)= 125°C.
New temperature at the same volume: \(V_2\) = 2 L.
We can use the relationship\(V_1\)/\(T_1\) = \(V_2\)/\(T_2\) to find the new temperature (\(T_2\)).
(2 L)/(125 + 273) K = (2 L)/(\(T_2\) + 273) K
Solving for\(T_2\), we get \(T_2\) ≈ 398°C.
Therefore, the new temperature of the container at a volume of 2 L is approximately 398°C.
3)Initial volume: \(V_1\)= 4.0 L, \(P_1\) = 3.0 atm.
Final volume: \(V_2\) = 2.5 L.
Since the temperature (T) is constant, we can use the relationship \(P_1\)\(V_1\) = \(P_2V_2\) to find the new pressure (\(P_2\)).
(3.0 atm)(4.0 L) = (\(P_2\))(2.5 L)
\(P_2\) ≈ 4.8 atm.
Therefore, the new pressure at 2.5 L is approximately 4.8 atm.
4)Initial volume: \(V_1\)= 50 mL, \(T_1\) = 25°C.
New temperature: \(T_2\) = 60°C.
We need to convert the temperatures to Kelvin.
\(T_1\)= 25 + 273 = 298 K, \(T_2\) = 60 + 273 = 333 K.
We can use the relationship \(V_1/T_1 = V_2/T_2\) to find the new volume (\(V_2\)).
(50 mL)/(298 K) = (\(V_2\))/(333 K)
\(V_2\) ≈ 55.8 mL.
Therefore, the new volume at a temperature of 60°C is approximately 55.8
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James measured the humidity of the air on his backyard each morning for four days His data is recorded below On which day did it most likely rain
Answers
Answer:
hdbdjsjsj
Explanation:
hdhshshe
Can you explain in detail how anion exchage occur in soil.
Answers
Answer:
With the adsorption of cations like zinc as Zn (OH)+ or ZnCl+ or both, the anion exchange is known to increase. The solid phase has an impact on the anions' concentration in the soil solution. Anions are negatively adsorbed as a result of the exchange complex's overall negative charge.
What threatens the health of coral reefs? (Select all that apply.) increased diversity of coral polyp species coastal land development silt runoff ocean water pollution damage from scuba diving, boating, and fishing
Answers
Corals are a key part of world's diversity .
I have done the quiz so here is the answer:
coastal land development
ocean water pollution.
damage from scuba driving, boating and fishing.
PLEASE HELPPPP!!!!!!!!!!!!
Answers
Answer:
Largest: Mg
Smallest: Cl
Explanation:
The meaning of the word symptom:
Answers
The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.
Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.
Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.
It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.
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A 898.3 g sample of sodium experiences a temperature change of +301.11 K. The specific heat capacity of sodium is 1.23 J/(g-K). How many joules of heat were transferred by the sample?
Answers
The amount of heat transferred to the sample of sodium is 332,699.149.
How to calculate heat?The amount of heat absorbed or released by a substance can be calculated using the following formula;
Q = mc∆T
Where;
Q = quantity of heat absorbed or releasedm = mass of substancec = specific heat capacity∆T = change in temperatureAccording to this question, 898.3g sample of sodium experiences a temperature change of +301.11 K. The specific heat capacity of sodium is 1.23 J/(g-K).
Q = 898.3 × 1.23 × 301.11
Q = 332,699.149 J
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A constant electric current deposited 365 mg of Ag in 216 minutes from an aqueous Silver trioxonitrate (v). What is the Current?
Answers
The electric current is 0.025 A
Electric current refers back to the go with the flow of energy in an electronic circuit and to the amount of strength flowing through a circuit. it's far measured in amperes (A). the bigger the cost in amperes, the more energy is flowing within the circuit.
Ag+ + e¯ →Ag
1F deposits 107.87 g/mol (molecular mass) of silver
1F = 96500 C
Let, 107.87 g/mol needed = 96500 C
Number of coulombs required to deposit 0.3650 g of silver =(96500/107.87) 0.3650
Q = 326.5 C
According to Faraday’s law, Q = I x t
I = 326.5 C / (216 x 60 s) = 0.025 A
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(b) Two compounds, A and B, have the molecular formula C₂H6O. On treatment with Na metal, compound A releases H2 gas and compound B does not.
Can you give a reason to help to explain the observation better?
Answers
The observation that compound A releases H2 gas while compound B does not when treated with Na metal can be explained by considering the structural differences between the two compounds and their ability to undergo specific reactions.
Compound A and compound B both have the molecular formula C₂H₆O, which indicates that they both contain two carbon atoms, six hydrogen atoms, and one oxygen atom. However, the difference lies in the arrangement of these atoms within the molecules. One possible explanation for the observed difference is that compound A is an alcohol, specifically ethanol (CH₃CH₂OH), while compound B is an ether, such as dimethyl ether (CH₃OCH₃). The presence of the hydroxyl group (-OH) in ethanol enables it to undergo a reaction with sodium metal, known as the metal-acid reaction. In this reaction, the metal displaces the hydrogen from the hydroxyl group, forming sodium ethoxide (CH₃CH₂ONa) and releasing hydrogen gas (H₂). On the other hand, ethers like dimethyl ether lack the hydroxyl group and therefore cannot undergo the metal-acid reaction. Consequently, when compound B is treated with sodium metal, no hydrogen gas is released. The ability of compound A to release hydrogen gas while compound B does not when treated with sodium metal can be attributed to the presence of a hydroxyl group in compound A (ethanol), enabling it to undergo a metal-acid reaction, whereas compound B (dimethyl ether) lacks the necessary functional group and thus does not undergo this reaction.
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Question 7 of 10
What property is used to calculate the pH of a solution?
Answers
Answer:
The hydrogen ion concentration in mol/L
Explanation:
Answer:
The pH of a solution is a measure of hydrogen ion concentration in mol/L
Explanation:
the concentration of hydrogen ions in a solution expressed usually in moles per liter or in pH units and used as a measure of the acidity of the solution
one member of each of the following sets of compounds is not isoelectronic with the others. which one in each set is the odd one out? a) [no2] , co2, [no2]-, [n3]-; b) [cn]-, n2, co, [no] , [o2]2-; c) [sif6]2-, [pf6]-, [alf6]3-, [brf6]-.
Answers
The process of gas effusion involves a hole, where the gas escapes. Lower molecular mass gases emit more quickly than greater molecular mass gases is( n2 and co )
The rate law demonstrates how the rate of a chemical reaction is influenced by the reactant concentration. The mathematical explanation provided by the Rate laws demonstrates how variations in a substance's amount can alter the rate of a chemical reaction.
The molecular mass is connected to the relative rates of effusion.
a) M(N₂)/M(O₂) = 28/32 = 0,875
b) M(N₂O)/M(NO₂) = 44/46 = 0,956
c) M(CO)/M(CO₂) = 28/44 = 0,636
d) M(NO₂)/M(N₂O₂) = 44/58= 0,758
e) M(CO)/M(N₂) = 28/28 = 1, CO and N₂ The equation for the elementary step is if the reaction takes place in the single elementary step, which is the three-body molecular collision. have inexact molecular masses and will effuse at nearly identical rates.
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An early arrangement of the then known elements was proposed by a British scientist John Newlands, which he called the Law of Octaves. Like other scientists at the time, Newlands arranged the elements in order of increasing atomic mass and noted that every eighth element had similar physical/chemical properties. In the modern Periodic Table, which of the following represents the last pair of elements for which Newlands' Law of Octaves would hold true?
Answers
100 POINTS HELP WILL GIVE BRAINLIEST
Answers
b. testing the hypothesis
hello, can you help me identify the name of these 4 molecules as well as the structural formula and the skeletal formula? thank you
Answers
Answer:1. metyletevinyl
4. (Z)-3-hydroxypropenal
Explanation:
Cumulative Exam Active
41 42 43 144
The electron configuration of nitrogen (N) is
O 1s²2s²2p³
O 1s²2s²2p4
O 1s²2s²2p5
O 1s²2s²2p6
Answers
The answer is: The electronic configuration of Nitrogen is \(1s^22s^22p^3\).
Electronic configuration: The electronic configuration is defined as the distribution of electrons of an atom in the atomic or molecular orbitals and is written using the labels for the subshell.
How to decide which orbital is filled first?
The order in which electrons are filled in atomic orbitals as:(Shown in image)
Just follow the arrows to select the orbitals, s orbital can have 2 electrons, p can have 6 electrons, d can have 10 electrons and f can 14 electrons.The electronic configuration in which the outer shell is completely filled is known as noble-gas configuration as they are similar to electronic configurations of noble gases.Now, the given element is nitrogen (\(N\)). The atomic number of Nitrogen is 7. Thus, these 7 electrons are filled as-\(1s^22s^22p^3\)
Therefore, the electronic configuration of Nitrogen is \(1s^22s^22p^3\).To learn more about the electronic configuration, visit:
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Nitrogen's complete electron configuration is 12s2s22p3.
The shorthand electron configuration for noble gases is [He] 2s22p3. Nitrogen has an atomic number of 7. The nitrogen atoms' nucleus contain this many protons. An atom that is neutral has an equal number of protons and electrons. Thus, the ground state electron configuration will consist of 7 electrons in the suitable s and p orbitals (state of lowest energy). For nitrogen, the entire electron configuration is 1s22s22p. Scientists may easily express and explain how the electrons are organized around the nitrogen atom's nucleus by using the configuration notation for nitrogen (N). As a result, it is simpler to comprehend and forecast how atoms will cooperate to form chemical bonds.
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