one reason spectroscopists study excited states is to gain information about the energies of orbitals that are unoccupied in an atoms ground state. the following electron configuration represents an atom in an excited state. identify the element, and write its condensed ground-state configuration: 1s22s22p63s23p44s1
Answers
Spectroscopists study excited states in order to gain a deeper understanding of the energy levels and properties of atoms. In the given electron configuration, the atom is in an excited state and we can identify the element as potassium (K).
The condensed ground-state configuration for potassium is 1s22s22p63s23p64s1. This configuration shows that the atom has a total of 19 electrons, with the first two occupying the 1s orbital, the next two in the 2s orbital, and so on. The 4s orbital, which is unoccupied in the excited state, is the highest energy level orbital in the ground state configuration of potassium. By studying excited states, spectroscopists can gain insight into the electronic structure and properties of atoms and molecules, which has important applications in many fields, including materials science, chemistry, and physics.
Spectroscopists study excited states to gather information about unoccupied orbitals' energies in an atom's ground state. In the given electron configuration (1s22s22p63s23p44s1), the element can be identified by totaling the electrons: 2+2+6+2+4+1 = 17 electrons. This configuration represents chlorine in its excited state.
To determine the condensed ground-state configuration, we must correct the excited state configuration by filling the orbitals in order. The corrected configuration is 1s22s22p63s23p5, which represents chlorine in its ground state.
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Related Questions
What kind of apparatus did boyle use to determine that relationship.
Answers
Boyle used a J-shaped glass tube and a mercury-filled cylinder to determine the relationship between pressure and volume.
Boyle's apparatus consisted of a J-shaped glass tube, one end of which was closed and the other end was open. The open end of the tube was placed in a mercury-filled cylinder. The air was trapped in the tube by the mercury, and the pressure was measured using a mercury barometer.
By adding weights to the top of the mercury column, Boyle was able to increase the pressure on the air inside the tube. As the pressure increased, the volume of the air decreased. By measuring the volume of the air at different pressures, Boyle was able to determine the relationship between pressure and volume, which is now known as Boyle's Law. This law states that at a constant temperature, the volume of a gas is inversely proportional to its pressure.
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Para el elemento de Z-56 b, que formula minima tiene el compuesto que forma con 17-cl¿ c, que tipo de union hay en dicho compuesto¿ d, cual es la estructura de lewis del compuesto formado¿
Answers
Answer:
ver explicacion
Explanation:
El elemento que tiene el número atómico 56 en la tabla periódica del bario. El bario es un elemento del grupo dos.
Se combina con el cloro para formar cloruro de bario. que tiene la fórmula BaCl2 de acuerdo con la valencia de ambos elementos.
El cloruro de bario es un compuesto iónico.
what is the ph of a solution with a hydronium ion concentration of 0.01 mole per liter? * (1) 1 (2) 2 (3) 10 (4) 14
Answers
the pH of the given solution is 2.
pH is a measure of the acidity or alkalinity of a solution, and is defined as the negative logarithm (base 10) of the concentration of hydrogen ions (H+) in the solution. pH values range from 0 to 14, with a pH of 7 being neutral, a pH below 7 being acidic, and a pH above 7 being alkaline or basic.
A low pH value indicates a high concentration of hydrogen ions, which makes the solution acidic. A high pH value indicates a low concentration of hydrogen ions, which makes the solution basic. The pH scale is commonly used in many fields, including chemistry, biology, environmental science, and medicine, to describe and quantify the acidity or alkalinity of a solution.
The pH of a solution with a hydronium ion concentration of 0.01 mole per liter can be calculated using the formula:
pH = -log[H3O+]
where [H3O+] is the concentration of hydronium ions in moles per liter.
Substituting the given value, we get:
pH = -log(0.01)
Using a calculator, we get:
pH = 2
Therefore, the pH of the given solution is 2.
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A 35 gram of saturated solution is distilled out completely. If the solubility of the solute is 110, find the amount of residue solute snd distilled water
Answers
Answer:
3850g
Explanation:
Solubility is the amount of solute dissolved in a solvent.
Solubility is mass of solute÷mass of solvent
The solvent is 35grams
Solute?
Solubility of solute is 110
110=x/35
= 110 × 35
The amount of residue solute is 3850g
A student is working with four different solid substances: sodium (Na), calcium (Ca), copper (Cu), and iodine (I). Which substance is most likely to break easily into many smaller pieces?
Answers
Answer: iodine
Explanation: Its right trust me I took quiz.
The substance that is most likely to break easily into many smaller pieces is iodine.
Metals are found around the left hand side of the periodic table while nonmetals are found around the right hand side of the periodic table.
Metals are strong and not brittle. They do not break easily like the nonmetals do. Since iodine is a nonmetal, it is brittle. It breaks easily into smaller pieces unlike the metals; sodium, calcium and copper.
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draw lewis structures for the ethylene molecule ( c2h4 ), the chloromethane molecule ( c2hcl ), and the acetaldehyde molecule ( ch3cho ), and then answer the questions that follow.
Answers
The lewis structures of ethylene, chloromethane, and acetaldehyde are shown in the attached diagram below.
What is the lewis electron dot structure?Lewis structures can be described as diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. A Lewis structure can possibly draw for any covalently bonded molecule and coordination compounds.
A lewis electron dot structure can be used to represent the total number of bonds, the different bonding atoms, and the lone pairs left in the atoms in the molecule.
Solid lines are used to show the bond between atoms that are bonded directly to one another and lone pairs of electrons are represented as dot pairs and are placed next to the atoms.
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a ground state hydrogen atom absorbs a photon of light having a wavelength of 92.6 nm. what is the final state of the hydrogen atom?
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When a ground state hydrogen atom absorbs a photon of light having a wavelength of 92.6 nm, the final state of the hydrogen atom is the excited state.
The hydrogen atom has only one electron, which is located in the ground state or the first energy level. When a photon of light of 92.6 nm wavelength is absorbed, the electron gains energy and jumps to the higher energy level, which is the second energy level (n = 2).
Thus, the final state of the hydrogen atom is the excited state or the second energy level. The energy absorbed by the electron is equal to the energy of the photon. The energy of a photon is given by the formula: Energy of a photon = hc/λwhere,h = Planck's constant = 6.626 x 10⁻³⁴ J.s
c = speed of light = 3 x 10⁸ m/s λ = wavelength of the photon
Substituting the given values, we get
Energy of a photon = (6.626 x 10⁻³⁴ J.s x 3 x 10⁸ m/s) / (92.6 x 10⁻⁹ m)
Energy of a photon = 2.14 x 10⁻¹⁸ J. The energy absorbed by the electron is equal to the energy difference between the two energy levels.
The energy of an electron in the nth energy level of the hydrogen atom is given by the formula: E_n = (-2.18 x 10⁻¹⁸ J) / n² where, E_n = energy of electron in nth energy level
Substituting n = 1 (ground state), we get: E₁ = (-2.18 x 10⁻¹⁸ J) / (1)² E₁= -2.18 x 10⁻¹⁸ J
Substituting n = 2 (excited state), we get: E₂ = (-2.18 x 10⁻¹⁸ J) / (2)² E₂ = -0.545 x 10⁻¹⁸ J
The energy absorbed by the electron is the difference between the energy of the electron in the excited state and the energy of the electron in the ground state.
ΔE = E₂ - E₁
ΔE = (-0.545 x 10⁻¹⁸ J) - (-2.18 x 10⁻¹⁸ J)ΔE = 1.64 x 10⁻¹⁸ J
Since the electron gains energy, the energy absorbed by the electron is positive. Therefore, the final state of the hydrogen atom is the excited state.
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The answer to this question is D as it says in the answer sheet of the question paper but how?
Answers
Answer:
D
Explanation:
Because of their complementary nature, the oxidation and reduction processes together are referred to as redox reactions. The reactant that brings about the oxidation is called the oxidizing agent, and that reagent is itself reduced by the reducing agent. Examples are, mercury(II) oxide, oxygen, and the copper(II) ion are oxidizing agents, and carbon, hydrazine, and zinc are the reducing agents.
Answer:D
Explanation:Because of their complementary nature, the oxidation and reduction processes together are referred to as redox reactions. The reactant that brings about the oxidation is called the oxidizing agent, and that reagent is itself reduced by the reducing agent. Examples are, mercury(II) oxide, oxygen, and the copper(II) ion are oxidizing agents, and carbon, hydrazine, and zinc are the reducing agents.
Question 66
Garbage reduction melts out fats that are used in manufacturing of
a. soaps, glycerines and cosmetics
b. glue and cement
c. grouting and calk
d. fertilizer and cattle feed
Answers
The correct answer is a. Garbage reduction involves the process of breaking down and disposing of waste materials in a manner that is environmentally sustainable.
During this process, fats and oils are separated from organic waste materials and can be used in the manufacturing of soaps, glycerines, and cosmetics. This process not only helps in reducing the amount of waste that ends up in landfills but also provides a valuable resource for the manufacturing industry. However, it is important to note that the use of such materials in the manufacturing industry should be done in a manner that is safe and sustainable. Additionally, while garbage reduction can provide valuable resources, it is still important to focus on reducing waste at the source and promoting sustainable practices such as composting and reducing the use of single-use plastics. Fertilizers, on the other hand, are typically manufactured from synthetic or organic materials and are used to provide essential nutrients to plants. They are not produced from fats and oils obtained from garbage reduction.
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Draw the Lewis structure for sulfate (SO₄²⁻) with minimized formal charges. How many TOTAL likely resonance structures exist for SO₄²⁻?
Answers
To draw the Lewis structure for sulfate (SO₄²⁻) with minimized formal charges and determine the total likely resonance structures, follow these steps:
1. Identify the central atom: Sulfur (S) is the central atom in the sulfate ion.
2. Count the total number of valence electrons: Sulfur has 6, each oxygen has 6, and there are 2 extra electrons due to the 2- charge. So, the total number of valence electrons is 6 + 4(6) + 2 = 32.
3. Connect the central atom to the surrounding atoms with single bonds: Connect the sulfur atom to each of the four oxygen atoms using single bonds. This uses up 8 valence electrons (2 for each bond).
4. Distribute the remaining valence electrons to complete the octets of the surrounding atoms: 32 - 8 = 24 valence electrons are left. Distribute them to the four oxygen atoms to complete their octets (6 electrons for each oxygen atom).
5. Check for the need for multiple bonds to satisfy the octet rule for the central atom: Sulfur has 8 electrons around it (1 from each single bond), so the octet rule is satisfied.
Now, the Lewis structure is complete with minimized formal charges. However, there are multiple resonance structures for SO₄²⁻. Since sulfur can form double bonds with any of the four oxygen atoms, there are a total of 4 likely resonance structures for SO₄²⁻, with one double bond in each resonance structure and the remaining oxygen atoms having single bonds.
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If 14.7 cm3 of alcohol is present in 70 cm 3 of its aqueous solution, the percentage by volume of alcohol will be?
Answers
Answer: The percentage by volume of alcohol will be 21%.
Explanation:
Given: Volume of solute = 14.7 \(cm^{3}\)
Volume of solvent = 70 \(cm^{3}\)
Formula used to calculate percentage by volume is as follows.
\(Percentage volume = \frac{volume of solute}{volume of solvent} \times 100\)
Substitute the values into above formula as follows.
\(Percentage volume = \frac{volume of solute}{volume of solvent} \times 100\\= \frac{14.7 cm^{3}}{70 cm^{3}} \times 100\\= 21 percent\)
Thus, we can conclude that the percentage by volume of alcohol will be 21%.
3.00g of Cacl^2 is dissolved in 100.0mL of Water. What is the mass percentage of Cl- in the solution?Use the filling values to calculate: MM of Ca = 40.078 g/mol MM of Cl = 35.45 g/mol Density of Water: 1.00g/mL
Answers
The mass percentage of Cl⁻ in the solution produced when 3.00g of CaCl₂ is dissolved in 100.0mL of water is 1.86 %.
What is the total mass of the given solution?The total mass of the solution which is produced when 3.00g of CaCl₂ is dissolved in 100.0mL of water is determined as follows:
mass of CaCl₂ = 3.0 g
mass of water = density * volume
mass of water = 1.00 g/mL * 100.0 mL
mass of water = 100.0 g
mass of solution = (100.0 + 3.0) g
total mass of solution = 103.0 g
molar mass of CaCl₂ = (40 + 35.5 * 2) g/mol
molar mass of CaCl₂ = 111 g/mol
mass percentage of Cl⁻ in CaCl₂ = 71/111
mass of Cl⁻ present in 3.0 g of CaCl₂ = 71/111 * 3 = 1.92 g
mass percentage of Cl⁻ in the solution = 1.92/103 * 100%
mass percentage of Cl⁻ in the solution = 1.86 %
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What conclusions can be drawn regarding the molecule C6H12O6?
1. The molecule is inorganic; it is a salt.
2. The molecule is organic; it is a salt.
3. The molecule is inorganic; it is a carbohydrate.
4. The molecule is organic; it is a carbohydrate.
Which answer best describes the relationship between sodium and aluminum?
1. Sodium and aluminum have similar chemical properties because they are in the same group.
2. Sodium and aluminum have similar chemical properties because they are in the same period.
3. Sodium and aluminum have the same number of electron shells because they are in the same group.
4. Sodium and aluminum have the same number of electron shells because they are in the same period.
Answers
URGENT CAN SOMEONE ANSWER THIS QUESTION AND SHOW THEIR WORK PLEASE! How many moles of ammonia (NH) can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen?
Answers
Answer:
0.116 moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen.
Explanation:
The balanced chemical equation for the reaction of hydrogen and nitrogen to form ammonia is:
N2(g) + 3H2(g) → 2NH3(g)
To determine how many moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen, we need to use the ideal gas law equation:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
First, we need to convert the volume of hydrogen gas to moles using the ideal gas law equation:
n = PV/RT
where P is the pressure in atm, V is the volume in liters, R is the gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin.
n = (1.2 atm)(4.0 L)/(0.0821 L·atm/mol·K)(50.0°C + 273) = 0.174 mol H2
Since there is excess nitrogen, all of the hydrogen will react to form ammonia. Using the mole ratio between NH3 and H2 from the balanced chemical equation:
2 mol NH3 / 3 mol H2
we can calculate how many moles of NH3 will be produced:
n(NH3) = (0.174 mol H2) × (2 mol NH3 / 3 mol H2) = 0.116 mol NH3
Therefore, 0.116 moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen.
match these items. match the items in the left column to the items in the right column. 1 . ionic bond a chemical bond between atoms with similar electronegativities 2 . covalent bond a measure of the ability of an atom to attract electrons within a chemical bond 3 . metallic bond a bond between atoms of greatly differing electronegativities 4 . electronegativity the bond formed in metals, holding metals together
Answers
1. a chemical bond between atoms with similar electronegativities - covalent bond
2. a measure of the ability of an atom to attract electrons within a chemical bond - Electronegativity
3. a bond between atoms of greatly differing electronegativities - Ionic bond
4. the bond formed in metals, holding metals together - Metallic bond
A covalent bond is a bond formed by sharing electrons between two atoms that occur in the bond. It generally forms between atoms with similar electronegativity values.
An ionic bond is a bond formed between two oppositely charged ions of her and held by strong electrostatic attraction. It forms between atoms that have vastly different electronegativities.
Electronegativity is the tendency of an atom in a covalent bond to attract a shared pair of electrons.
A metallic bond is a bond formed by electrostatic attraction between a positively charged metal ion and a conduction electron.
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the epa limit for lead in the water supply is 15 parts per billion by mass (15 g pb / 1 x 10 9 g h 2o). calculate the number of lead ions present in 1.00 kg of water that is at the epa limit for lead. assume the mass of a lead ion and atom are the same.
Answers
The number of lead ions in 1 kg of water at 15 ppb on a weight basis is found to be 4.3623 x 10^16.
How to calculate the amount of lead ion present in water?According to Avogadro's number, a mole is 6.02 x 10E23 ions or molecules.One mole of water weighs 18 g because water has a molecular weight of 18.1000/18 moles are equal to 1 kilogramme of water.The quantity of water molecules in 1 kilogramme is calculated by multiplying 1000/18 moles by Avogadro's number (6.0210 to the 23rd);Currently, lead has a molecular weight of 207, whereas water's is only 18. Consequently, one lead ion weighs 207/18 water molecules.Since we are using a weighted average, the quantity of lead ions in 1 kilogramme of water at 15 ppb is (water molecules in 1 kg) X 15/1 billion X (18/207).What is the parts per million measurement?
The amount of units of mass of a contaminant per million units of total mass is known as parts per million (ppm).
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write a balanced equation for the decomposition reaction described, using the smallest possible integer coefficients. when carbonic acid decomposes, water and carbon dioxide are formed.
Answers
When carbonic acid decomposes, water and carbon dioxide are formed. The balanced chemical equation for the reaction can be represented as follows:Carbonic acid is a weak inorganic acid that forms when carbon dioxide is dissolved in water.
Carbonic acid is also present in fizzy drinks and soda water. When carbonic acid decomposes, water and carbon dioxide are formed.The balanced chemical equation for the decomposition reaction of carbonic acid can be represented as:H2CO3 → H2O + CO2The above reaction is an example of a decomposition reaction, which means that a single compound breaks down into two or more simpler substances.
Here, carbonic acid, which is a compound, breaks down into water and carbon dioxide gas.Balancing chemical equations is an important concept in chemistry that is used to describe chemical reactions. It involves the use of coefficients to balance the number of atoms of each element on both sides of the equation. The coefficients are the smallest possible integers that ensure that the law of conservation of mass is obeyed.
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A car travels 350 km in 7 hours. What is the average speed of the car (in km/hr)?
Answers
Answer:
50 km/hr
Explanation:
just divide the distance by the time (350/7)
Answer:
50 km/hr
Explanation:
Distance = 350 km
Time = 7 hours
Average Speed = ?
\(Average\:Speed = \frac{Distance}{Time} \\\\Average\: speed = \frac{350\:km}{7\:hr} \\\\A.V = 50\:km/hr\)
If a molecule has bond angles of 120° between the atoms, what type of hybrid orbitals are on the central atom in the molecule?
Answers
Answer:
Solution
verified
Verified by Toppr
Correct option is B)
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d type of hybridisation, shape of molecule is trigonal bipyramidal and bond angle will be of 120
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A 25-mL aliquot of a 0.0104 M KIO3 solution is titrated to the end point with 17.27 mL of a sodium thiosulfate, Na2S2O3, solution using a starch-iodide indicator. What is the molar concentration of the Na2S2O3 solution?
I know this question has been asked on Chegg before but there are a lot of different methods and answers and I am not sure which is correct.
Answers
To determine the molar concentration of the sodium thiosulfate (Na₂S₂O₃) solution, we can use the concept of stoichiometry. Therefore, the molar concentration of the Na₂S₂O₃solution is 0.015 M.
The balanced chemical equation for the reaction between KIO₃ and Na₂S₂O₃.
The balanced equation for the reaction is as follows:
2Na₂S₂O₃+ 2KI + H₂O -> Na₂S₄O₆ + 2KOH + I2
From the balanced equation, we can see that the ratio ofNa₂S₂O₃to KIO₃ is 2:1.
Given:
Volume of KIO₃solution = 25 mL = 0.025 L
Molar concentration of KIO₃ solution = 0.0104 M
Volume of Na₂S₂O₃ solution = 17.27 mL = 0.01727 L
To find the molar concentration of Na₂S₂O₃ we can use the following formula:
Molarity of KIO₃ x Volume of KIO₃ solution = Molarity of Na₂S₂O₃ x Volume of Na₂S₂O₃ solution
0.0104 M x 0.025 L = Molarity of Na₂S₂O₃ x 0.01727 L
Rearranging the equation to solve for the molarity of Na₂S₂O₃:
Molarity of Na₂S₂O₃= (0.0104 M x 0.025 L) / 0.01727 L
Molarity of Na₂S₂O₃ = 0.015 M
Therefore, the molar concentration of the Na₂S₂O₃ solution is 0.015 M.
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I kinda need help pla
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Which factor can cause acceleration to decrease?
Answers
Ca(HCO3)2 as a ratio
Answers
Answer:
Can(HCO 3)2=CaCO +CO2 +H2O
11. A 30-kg box is 0.2 m long and 0.15 m wide. What pressure does it exert on the floor?
Answers
Answer:
P = 9800 Pa
Explanation:
Given that,
The mass of a box, m = 30 kg
Length of the box, l = 0.2 m
The width of a box, b = 0.15 m
We need to find the pressure it exerted on the floor. Pressure is equal to force acting per unit area. So,
\(P=\dfrac{F}{A}\\\\=\dfrac{mg}{lb}\\\\=\dfrac{30\times 9.8}{0.2\times 0.15}\\\\P=9800\ Pa\)
So, 9800 Pa of pressure is exerted on the floor.
Which of these statements relating to ecological succession is true?
During succession, there is no change to the physical or chemical environment.
During succession, existing species resist interaction with new species.
During succession, new species move into an area and colonize it.
Most ecological successions occur over 10 to 15 years.
Answers
Answer: During succession, new species move into an area and colonize it.
Explanation: Ecological succession refers to the process of change in the composition and structure of an ecosystem over time. It occurs due to the interactions between the biotic (living) and abiotic (non-living) components of an environment. As succession progresses, new species gradually establish and thrive in the area, leading to a change in the species composition. This process can occur over a long period of time, ranging from decades to centuries, depending on various factors such as environmental conditions and the specific type of succession.
The property of a mineral splitting evenly along a flat surface is.
Answers
Answer:
The answer should be Cleavage
Given the pKa’s for H2CO3: pKa1 = 6.35; pKa2=10.33, what is the pKb1 of CO32- (Kb1 is the equilibrium constant of the reaction: CO32- + H2O ⇌ HCO3- + OH-)?
(A) 14.00
(B) 10.33
(C) 3.67
Answers
To determine the pKb1 of CO32-, we can use the relationship between pKa and pKb for conjugate acid-base pairs:
pKa + pKb = pKw
where pKw is the ionization constant of water, which is approximately 14. Therefore, we can rearrange the equation to solve for pKb:
The pKb value represents the negative logarithm of the equilibrium constant (Kb) for the reaction of a base with water. In this case, we are interested in the equilibrium reaction between CO32- and water, which can be represented as CO32- + H2O ⇌ HCO3- + OH-.
By utilizing the relationship pKa + pKb = pKw, we can rearrange the equation to solve for pKb. Given that pKa1 of H2CO3 is 6.35, we subtract this value from pKw (approximately 14) to obtain pKb1
pKb = pKw - pKa
pKb1 = 14 - 6.35 = 7.65
Since none of the given answer choices matches the calculated value, it seems there might be an error or omission in the available options. Please double-check the answer choices provided or refer to additional information to obtain the correct pKb1 value for CO32-.
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A football field is 100 m long. If it takes a player to run the field 30 seconds what is
their speed
Answers
Answer:
The answer is 3.33 m/sExplanation:
The speed of an object can be found by using the formula
\(v = \frac{d}{t} \\ \)
where
d is the distance
t is the time taken
From the question we have
\(v = \frac{100}{30} = \frac{10}{3} \\ = 3.333333...\)
We have the final answer as
3.33 m/sHope this helps you
This is a science question. What is the skateboarder’s acceleration?
Answers
Answer:
2.4
Explanation:
Divide 7.0 by 3.0 you get 2.333333 then round it of to 2.34
How many moles of H2 can be made from the complete reaction of 1.5 moles of Al? Given: 2 Al + 6 HCl → 2 AlCl3. + 3 H2
Answers
Answer:
2.25 mol H₂
Explanation:
To calculate mol of H₂ ensure that the equation is balanced. Then use the equation and dimensional analysis to convert the given 1.5 mol Al to mol of H₂.
