There are 8 degrees of unsaturation in C₈H₉ClO.
To determine the number of degrees of unsaturation in a molecule, we can use the formula:
Degrees of unsaturation = (2 x Number of carbons) + 2 - (Number of hydrogens / 2) - (Number of nitrogens / 2) - (Number of halogens / 2) - (Number of heteroatoms / 2)
For the given molecule, we have 8 carbons, 9 hydrogens, 1 chlorine, and 1 oxygen.
Degrees of unsaturation = (2 x 8) + 2 - (9 / 2) - (0 / 2) - (1 / 2) - (1 / 2)
= 16 + 2 - 4.5 - 0 - 0.5 - 0.5
= 13 - 5
= 8
The presence of degrees of unsaturation suggests the presence of multiple bonds or rings in the molecule.
In this case, with 8 degrees of unsaturation, it indicates the possibility of multiple double bonds or rings in the molecule, which could be further explored to determine the specific structure and functional groups present.
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A student performed a similar experiment with four hypothetical cations, A, B, C, and D and two hypothetical anions, X and Y. Her data is below: Analyte yellow ppt yellow ppt white ppt clear, colorless solution, NR c* clear, colorless solution, NR clear, colorless solution, NR white ppt blue ppt The student was then provided with an unknown containing one of the anions above. She reacted it with the four hypothetical cations, A, B, C, and D, her results are below: Analyte unknown yellow ppt Which of the following statements is most true with regard to this data? a) More tests would need to be performed to identify the anion in the unknown. b) The unknown anion is most likely Y c) The unknown anion is most likely X
Option (a) is the most true statement based on the provided data, and further testing is needed to identify the specific anion in the unknown solution.
Based on the provided data, the student observed a yellow precipitate when reacting the unknown with the four hypothetical cations A, B, C, and D.
This suggests that the unknown anion is capable of forming a yellow precipitate with these cations. However, without further information or additional tests, it is not possible to definitively conclude the identity of the unknown anion.
Option (a) states that more tests would need to be performed to identify the anion in the unknown. This is the most accurate statement based on the given data. The observed yellow precipitate narrows down the possibilities but does not provide enough information to determine whether the unknown anion is X or Y. Additional tests or data would be required to make a conclusive identification.
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A voltaic cell is based on the reaction
Sn(s)+I2(s)→Sn2+(aq)+2I−(aq).
Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 80.0 gof Sn is consumed?
The maximum electrical work that the cell can accomplish if 80.0 g of Sn is consumed is 87215 Joules (J).
To determine the maximum electrical work that the voltaic cell can accomplish, we need to calculate the maximum cell potential (E°cell) and use it to find the maximum electrical work (Wmax).
First, let's write the half-reactions for the oxidation and reduction processes
Oxidation half-reaction: Sn(s) → Sn₂+(aq) + 2e⁻
Reduction half-reaction: I₂(s) + 2e⁻ → 2I⁻(aq)
Now, we can determine the standard reduction potentials (E°red) for each half-reaction from the ALEKS Data tab
E°red(Sn₂+/Sn) = -0.14 V
E°red(I₂/I-) = 0.54 V
The standard cell potential (E°cell) can be calculated using the formula:
E°cell = E°red(reduction) - E°red(oxidation)
E°cell = 0.54 V - (-0.14 V) = 0.68 V
The maximum electrical work (Wmax) can be calculated using the equation
Wmax = nF E°cell
Where
n = moles of electrons transferred (determined from the balanced equation)
F = Faraday's constant (96485 C/mol)
From the balanced equation, we can see that 2 moles of electrons are transferred per mole of Sn consumed.
Molar mass of Sn = 118.71 g/mol
Number of moles of Sn consumed = 80.0 g / 118.71 g/mol = 0.674 mol
n = 2 moles of electrons/mol of Sn consumed = 2 × 0.674 mol = 1.348 mol
Now we can calculate Wmax
Wmax = (1.348 mol)(96485 C/mol)(0.68 V) = 87215 J
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HELP 15-21 PLEASE!!!
Answer:
15. Lead (II) chloride
16. potassium chloride
17. Lithium oxide
18. Arsenious trioxide
19.Phosphorus tribromide
Explanation:
Answer:
ANSWER
Explanation:
Which of these acid dissociates completely in aqueous solution?
A- Acetic acid
B- Citric acid
C- НСІ
D- Carbonic acid
Answer:
HCl
Explanation:
is a strong acI'd,,By contrast a weak acid like acetic acid (CH3COOH) does not dissociate well in water
lewis diagrams of the weak bases nh3 and nf3 are shown above. based on these diagrams, which of the following predictions of their relative base strength is correct, and why?
Based on the Lewis diagrams of NH3 and NF3, the correct prediction is that NH3 is a stronger base than NF3.
NH3 has a lone pair of electrons on the nitrogen atom that is available for donation to a proton, making it a Lewis base. In contrast, NF3 has a similar lone pair on nitrogen, but the presence of electronegative fluorine atoms reduces the electron density on nitrogen, making the lone pair less available for donation. The stronger electron availability in NH3 allows it to more readily accept a proton, making it a stronger base compared to NF3.
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imagine that cl- ions exist in higher concentration outside a cell than inside, and that the membrane is only permeable to the cl- ions. which one of the following statements is correct?
If the concentration of chloride ions (Cl-) is higher outside the cell compared to inside, and the membrane is only permeable to Cl- ions, the correct statement would be:
"Cl- ions will move from the higher concentration outside the cell to the lower concentration inside the cell through the membrane until equilibrium is reached."
This movement of ions occurs due to the principle of diffusion. Diffusion is the passive movement of particles from an area of higher concentration to an area of lower concentration. In this case, since the membrane is permeable only to Cl- ions, they will be the only particles involved in this process. As Cl- ions are more concentrated outside the cell, they will move across the membrane, down their concentration gradient, into the cell. This movement will continue until the concentrations of Cl- ions inside and outside the cell become equal, reaching equilibrium. It's important to note that this process does not require the input of energy, as it occurs spontaneously due to the concentration difference. However, the movement of Cl- ions may have implications for the overall electrochemical balance of the cell, potentially affecting other ion concentrations and membrane potential.
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Continental mountain ranges are usually associated with
The chemical equation below is correctly balanced.
4 Al + 3 O2 → 2 Al2O3
How many moles of Al2O3 will be formed when 27 grams of Al reacts completely with O2?
Answer:
0.35moles
Explanation:
when 156g of Al reacts with 2molesof Al2O3 then 27g of Al reacts with what then u cross multiply and solve ur answer
0.35moles of Al[tex]_2[/tex]O[tex]_3[/tex] will be formed when 27 grams of Al reacts completely with O[tex]_2[/tex]. A mole consists of precisely 6.022× 10²³particles.
What is mole?A mole is just a measuring scale. In reality, it's one of the International System of Units' seven foundation units (SI). When already-existing units are insufficient, new ones are created. The levels at which chemical reactions frequently occur exclude the use of grams, yet utilizing actual numbers of atoms, molecules, or ions would also be unclear.
A mole consists of precisely 6.022× 10²³particles. The "particles" might be anything, from tiny things like electrons and atoms to enormous things like stars or elephants.
4 Al + 3 O[tex]_2[/tex] → 2 Al[tex]_2[/tex]O[tex]_3[/tex]
moles of aluminium = 27 /26=1.03moles
The mole ratio between Al and Al[tex]_2[/tex]O[tex]_3[/tex] is 2:1
mole of Al[tex]_2[/tex]O[tex]_3[/tex]= 0.35moles
Therefore, 0.35moles of Al[tex]_2[/tex]O[tex]_3[/tex] will be formed when 27 grams of Al reacts completely with O[tex]_2[/tex].
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3. A cub has the following measurements: I=0.045 m, w=
0.45dm, 4.5 mm. It's mass is 1.45 X 104 mg. What is this
cube's density in Kg/cm?
Answer:
Density of cube = 1.59 × 10-⁴ kg/cm³
Explanation:
From the question, the dimensions of the cube are as follows:
Iength, l =0 .045 m, width, w = 0.45dm, height, h = 4.5 mm.
It's mass is 1.45 X 104 mg. What is this cube's density in Kg/cm?
First, all units of length are converted to cm and mass is converted to Kg.
L = 0.045 m = 0.045 m × 100 cm/m = 4.5 cm;
W = 0.45 dm = 0.45 dm × 10 cm/dm = 4.5 cm
Since it is a cube, the height, h = 4.5 cm not 4.5 mm
Mass of cube = 1.45 × 10⁴ mg = 1.45 × 10⁴ mg × 1 × 10-⁶ kg/mg = 0.0145 kg
Density = mass/volume
Volume of cube = s³ or l × w × h
Volume of cube = 4.5 cm × 4.5 cm × 4.5 cm = 91.125 cm³
Density of cube = 0.0145 kg / 91.125 cm³
Density of cube = 1.59 × 10-⁴ kg/cm³
Groups of atoms repeat to make up a substance?
True
False
Answer:
ITS TRUE!!!!!
Calcium carbonate crystals can be distinguished from bacteria by: _________
Calcium carbonate crystals can be distinguished from bacteria based on several key factors. Firstly, their physical characteristics differ significantly.
Calcium carbonate crystals have a distinct geometric shape, such as rhomboids, hexagons, or prisms, which can be observed under a microscope. In contrast, bacteria are living microorganisms that possess cellular structures, such as membranes, cytoplasm, and genetic material.
Secondly, the size of calcium carbonate crystals tends to be larger and more uniform compared to the varied sizes of bacteria. Additionally, calcium carbonate crystals are inert structures, lacking the metabolic activities and biological functions exhibited by bacteria.
By considering these factors and employing microscopic examination, it is possible to differentiate calcium carbonate crystals from bacteria with a reasonable degree of accuracy.
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what is the unit for particles of titanium iii oxide
a. Ions
b. Atoms
C: molecules
d. Formula units
Answer:
d
Explanation:
how many moles of c6h12o6 are consumed when 6.0 moles o2 are used
One mole of C₆H₁₂O₆ is consumed when 6.0 moles O₂ are used in the reaction.
The balanced chemical equation for the reaction is: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
For every 6 moles of oxygen gas consumed, one mole of glucose is consumed. The molar ratio of C₆H₁₂O₆ to O₂ is 1:6.The amount of moles of C₆H₁₂O₆ consumed when 6.0 moles O₂ are used is given by:Moles of C₆H₁₂O₆ = Moles of O₂ ÷ 6Moles of C₆H₁₂O₆ = 6.0 ÷ 6Moles of C₆H₁₂O₆ = 1.0
Therefore, one mole of C₆H₁₂O₆ is consumed when 6.0 moles O₂ are used in the reaction.Given that the chemical equation for the reaction is: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
The stoichiometric coefficient of O₂ is 6, which means that for every 6 moles of O₂ consumed, one mole of glucose is consumed.The molar ratio of C₆H₁₂O₆ to O₂ is 1:6.
The amount of moles of C₆H₁₂O₆ consumed when 6.0 moles O₂ are used can be calculated by using the molar ratio.Moles of C₆H₁₂O₆
= Moles of O₂ ÷ 6Moles of C₆H₁₂O₆
= 6.0 ÷ 6Moles of C₆H₁₂O₆
= 1.0
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5.0 mol Al produces up to 2.5 mol Al2O3 and 6.0 mol O2 produces up to 4.0 mol Al2O3. Al2O3: 102 g/mol What mass of Al2O3 forms? 1 [?] g Al₂O3
5.0 mol Al produces mass up to 255 g of Al2O3.
The balanced equation for the reaction is:4Al + 3O2 → 2Al2O3. We have to find the mass of Al2O3 produced when 5.0 mol Al produces up to 2.5 mol Al2O3. To find the mass of Al2O3 produced, we have to follow the steps given below: Step 1: Calculate the number of moles of Al2O3 produced when 5.0 mol Al produces up to 2.5 mol Al2O3.We can use the stoichiometric coefficients of Al and Al2O3 to calculate the number of moles of Al2O3 produced. According to the balanced equation,1 mol Al produces 0.5 mol Al2O3(2.5 mol Al2O3 / 5 mol Al) = 0.5 mol Al2O3Therefore, 5.0 mol Al produces up to 0.5 * 5.0 = 2.5 mol Al2O3Step 2: Calculate the mass of Al2O3 produced when 5.0 mol Al produces up to 2.5 mol Al2O3.To calculate the mass of Al2O3 produced, we can use the molar mass of Al2O3 and the number of moles of Al2O3 produced. The molar mass of Al2O3 is 102 g/mol. Mass of Al2O3 produced = Number of moles of Al2O3 produced * Molar mass of Al2O3= 2.5 mol * 102 g/mol= 255 g. Therefore, 5.0 mol Al produces up to 255 g of Al2O3.
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if 5.00g nacl (molar mass = 58.44 g/mol) was reacted with 10.0ml of 5m h2so4 what is the limiting reactant in this reaction?
The limiting reactant in the reaction, given that 5.00 g of NaCL reacted with 10.0 mL of 5 M H₂SO₄ is NaCl
How do i determine the limiting reactant?First, we shall obtain the mole of 5.00 g of NaCl. Details below:
Mass of NaCl = 5 grams Molar mass of NaCl = 58.44 g/mol Mole of NaCl =?Mole of NaCl = mass / molar mass
= 5 / 58.44
= 0.09 mole
Next, we shall obtain the mole of 10.0 mL of 5 M H₂SO₄. Details below:
Volume = 10 mL = 10 / 1000 = 0.01 LMolarity = 5 MMole of H₂SO₄ =?Mole of H₂SO₄ = molarity × volume
= 5 × 0.01
= 0.05 mole
Finally, we shall determine the limiting reactant. Details below:
2NaCl + H₂SO₄ -> Na₂SO₄ + 2HCl
From the balanced equation above,
2 moles of NaCl reacted with 1 mole of H₂SO₄
Therefore,
0.09 mole of NaCl will react with = (0.09 × 1) / 2 = 0.045 mole of H₂SO₄
We can see from the above that only 0.045 mole of H₂SO₄ out of 0.05 mole is needed to react completely with 0.09 mole of NaCl.
Thus, we can conclude that the limiting reactant for the reaction is NaCl
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Au + FeSO4= ?????????
Answer:
what
Explanation:
A large doublet and a small septet pattern in ¹H NMR is usually indicative of a(n)
A. ethyl group.
B. propyl group.
C. isopropyl group.
D. phenyl group.
The answer is B. propyl group.A large doublet and a small septet pattern in ¹H NMR spectroscopy indicate the presence of a propyl group in the molecule being analyzed.
In ¹H NMR (proton nuclear magnetic resonance) spectroscopy, the number and arrangement of signals in the spectrum provide information about the chemical environment and connectivity of hydrogen atoms in a molecule. A large doublet and a small septet pattern in ¹H NMR is characteristic of a propyl group.
A propyl group consists of three carbon atoms connected in a chain, with a hydrogen atom attached to each carbon atom. The large doublet arises from the neighboring hydrogens (vicinal protons) on the middle carbon atom, which split the signal into two peaks of equal intensity. The small septet arises from the hydrogens on the two terminal carbon atoms, which split the signal into seven peaks with intensity ratios of 1:6:6:6:6:6:1.
An ethyl group (A) consists of two carbon atoms and does not exhibit a septet pattern. An isopropyl group (C) consists of three carbon atoms but has a different arrangement of hydrogens, leading to a different splitting pattern in the NMR spectrum. A phenyl group (D) is an aromatic ring and typically exhibits different patterns in the NMR spectrum.
A large doublet and a small septet pattern in ¹H NMR spectroscopy indicate the presence of a propyl group in the molecule being analyzed. This pattern arises from the chemical shifts and splitting of hydrogens within the propyl group's carbon chain.
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what is velocity measured in?
Answer:
units of length per time
Explanation:
Which of the following statements are true about a strong base and a weak base at a pH of 11?
A. The weak base will require less HCl to bring the pH to 7 than the strong base.
B. The strong base will require less HCl to bring the pH to 7 than the weak base.
C. Both bases require the same amount of HCl to reach pH 7 because they are both at the same initial pH.
D. HCl will not bring the pH of either solution to pH 7.
Answer:
A, C, D
Explanation:
the half-life of plutonium-239 is 24,300 years. if a nuclear bomb released 8 kg of this isotope, how many grams of plutonium-239 would be left after 72,900 years?
To calculate the amount of plutonium-239 remaining after 72,900 years, we need to determine the number of half-lives that have passed. Given that the half-life of plutonium-239 is 24,300 years and 8 kg of this isotope was initially released, we can use the half-life formula to find the answer.
The number of half-lives can be calculated by dividing the total time elapsed (72,900 years) by the half-life of the isotope (24,300 years). In this case, the number of half-lives would be 72,900 years / 24,300 years = 3 half-lives. The remaining amount of plutonium-239 can be calculated by multiplying the initial amount (8 kg) by (1/2) raised to the power of the number of half-lives. Each half-life reduces the amount of plutonium-239 to half its previous value.
Remaining amount = initial amount × (1/2)^(number of half-lives)
Remaining amount = 8 kg × (1/2)^3
Remaining amount = 8 kg × (1/8)
Remaining amount = 1 kg
Therefore, after 72,900 years, there would be 1 kg (1000 grams) of plutonium-239 remaining from the initially released 8 kg.
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true/false. tetraphosphorus (p4), commonly known as white phosphorus, forms different compounds with chlorine (cl2) depending on the amount of chlorine present. if chlorine is limited, phosphorus trichloride
True. Tetraphosphorus (P4), commonly known as white phosphorus, can form different compounds with chlorine (Cl2) depending on the amount of chlorine present. When chlorine is limited, it forms phosphorus trichloride (PCl3).
White phosphorus, or tetraphosphorus (P4), is a highly reactive and toxic allotrope of phosphorus. When it reacts with chlorine, it can form various compounds. In the case where chlorine is limited or not in excess, the reaction between P4 and Cl2 leads to the formation of phosphorus trichloride (PCl3). Phosphorus trichloride is a colorless and volatile liquid compound that is used in various chemical processes and as a reagent in organic synthesis. It is important to note that in excess chlorine, different compounds such as phosphorus pentachloride (PCl5) can be formed.
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Write electron configurations for each of the following ions. A. Cl-
B. K+
C. p3-
D. Mo3+
E. v3+
The electron configurations for each of the following ions are as follows:
A. Cl⁻: 1s² 2s² 2p⁶ 3s² 3p⁶
B. K⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
C. P3⁻: 1s² 2s² 2p⁶ 3s² 3p⁶
D. Mo³⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰
E. V³⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d²
Electronic configuration refers to the arrangement of electrons in the energy levels, orbitals, and sub-orbitals of an atom or ion. It describes the distribution of electrons among the various energy levels and subshells within an atom. The electronic configuration provides information about the organization and stability of an atom, as well as its chemical properties. It is typically represented using a notation that indicates the number of electrons in each energy level and subshell, such as the superscript notation (e.g., 1s² 2s² 2p⁶) used to represent the electronic configuration of an atom.
Therefore, the electron configurations for each of the following ions are as follows:
A. Cl⁻: 1s² 2s² 2p⁶ 3s² 3p⁶
B. K⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
C. P3⁻: 1s² 2s² 2p⁶ 3s² 3p⁶
D. Mo³⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰
E. V³⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d²
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Complete the balanced overall ionic equation for sodium iodide dissolving in water. Nal(s) — Na +1(aq)
The complete balanced overall ionic equation for sodium iodide (NaI) dissolving in water can be written as follows: NaI(s) → Na+(aq) + I-(aq)
In this equation, NaI (s) represents solid sodium iodide, Na+(aq) represents sodium ions in the aqueous solution, and I-(aq) represents iodide ions in the aqueous solution.
When solid sodium iodide is added to water, it dissociates into its constituent ions, sodium ions (Na+) and iodide ions (I-). This dissociation occurs due to the attraction between the positive and negative charges in the water molecules and the ions of the solid.
The resulting solution contains sodium ions and iodide ions, both of which are now freely mobile in the aqueous medium. This dissociation process is reversible, meaning that if the solution is evaporated, the ions can recombine to form solid sodium iodide again.
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Pls no links can someone pls tell me what to put to fill in the blanks please someone?????
Answer: you go down by your key bad and use those arrows
Explanation:
hello my BEANS i want to know if u r a girl or a boy so if i call u a boy and u r a girl i am not a bad person i am 13 and i am good and not a robot pls dont repot me pls
Answer:
okie
Explanation:
imma girl
What is the mole fraction of oxygen gas in air (see table 5. 3 in the textbook)? express your answer using two significant figures?
The mole fraction of oxygen gas in air from table 5.3 of the textbook is 0.2095.
In the textbook table 5.3, the mole fraction of oxygen gas in air is 0.2095. The mole fraction refers to the number of moles of a substance in a given solution divided by the total number of moles of all components present in the solution. For air, the other components include nitrogen, carbon dioxide, and other trace gases.
In conclusion, the mole fraction of oxygen gas in air from table 5.3 of the textbook is 0.2095.
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Use the Ksp values in section 4.2 to calculate the pH at which a precipitate of iron(III) hydroxide will begin to dissolve. Assume that the concentration of iron in the solution is 0.1 M. b. Describe how you could use pH control to separate lead and iron if they were both precipitated as their hydroxides. Hint: How could pH be used to dissolve one of the hydroxide precipitates but not the other?
To selectively dissolve iron(III) hydroxide while leaving lead(II) hydroxide unaffected, pH control is used by adjusting the solution to be more basic, exploiting the difference in solubility behavior of the two hydroxides at different pH levels.
To calculate the pH at which a precipitate of iron(III) hydroxide will begin to dissolve, we need to use the solubility product constant (Ksp) for iron(III) hydroxide[tex](Fe(OH)_{3} )[/tex] and the concentration of iron in the solution.
b. To separate lead and iron if they were both precipitated as their hydroxides, pH control can be employed. By adjusting the pH, one of the hydroxide precipitates can be selectively dissolved while the other remains insoluble.
The solubility of a metal hydroxide is typically dependent on the pH of the solution due to the formation of hydroxide complexes or the presence of competing species.
For example, lead(II) hydroxide [tex](Pb(OH)_{2} )[/tex]has low solubility in neutral or slightly basic conditions, while iron(III) hydroxide[tex](Fe(OH)_{3} )[/tex]is more soluble at higher pH values.
Therefore, if both lead and iron hydroxide precipitates are formed, adjusting the pH to be more basic will selectively dissolve the iron(III) hydroxide precipitate while leaving the lead(II) hydroxide precipitate relatively unaffected.
This separation can be achieved by adding a basic solution, such as sodium hydroxide (NaOH), to increase the pH. The lead(II) hydroxide will remain insoluble while the iron(III) hydroxide will dissolve into solution due to the formation of soluble hydroxide complexes.
By carefully controlling the pH, the two metal hydroxide precipitates can be separated.
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draw the structure(s) of the carboxylic acids with formula c6h12o2 that contain an ethyl group branching off the main chain.
Carboxylic acids are organic acids that contain the carboxyl functional group (–COOH) as their structural feature. the structures of the carboxylic acids with the formula C6H12O2 that contain an ethyl group branching off the main chain are pentanoic acid and 3-methylbutanoic acid.
They can be found in various organic materials such as fruits, fats, and oils. The structure(s) of carboxylic acids with the formula C6H12O2 that contain an ethyl group branching off the main chain can be represented as follows:Two isomers can be possible for the given formula C6H12O2. They are pentanoic acid and 3-methylbutanoic acid.Pentanoic acid has a straight-chain of five carbon atoms (pentane) with a carboxyl group at one end and an ethyl group branching off from the fourth carbon atom. The structure of pentanoic acid is as follows:3-Methylbutanoic acid is a branched-chain carboxylic acid in which the carboxyl group is attached to the third carbon atom of a four-carbon chain, with an ethyl group attached to the second carbon atom. The structure of 3-methylbutanoic acid is as follows:Therefore, the structures of the carboxylic acids with the formula C6H12O2 that contain an ethyl group branching off the main chain are pentanoic acid and 3-methylbutanoic acid.
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how many ml of 12.0 m hcl are needed to prepare 1200 ml of a 0.10 M solution of hcl
This means that if you know how many moles of solute you have in the target solution, you also know how many moles of solute were present in the stock solution sample.
Use the molarity and volume of the target solution to determine how many moles of hydrochloric acid,
HCl
, you need in that solution
c
=
n
V
⇒
n
=
c
⋅
V
n
HCl
=
0.10 M
⋅
500
⋅
10
−
3
L
=
0.050 moles HCl
Now the question is - what volume of stock solution would contain this many moles of hydrochloric acid?
c
=
n
V
⇒
V
=
n
c
V
stock
=
0.050
moles
12
moles
L
=
0.0041667 L
I'll leave the answer rounded to two sig figs, despite the fact that you only gave one sig fig for the volume of the target solution
V
stock
=
4.2 mL.follow me
Please Help ASAP!!! Will mark Brainliest!!!
A 35 kg child is standing in a 70 kg boat resting on the water. The child jumps forward, away from the boat, pushing with a force of 500 N. After the jump, the boat moves backward.
What does this scenario show?
A. The boat does not exert a force to balance the 500 N force, causing the boat to move.
B. The water creates a frictionless surface, causing the boat to move without an action force.
C. The boat has a greater mass than the child but reacts to an action force.
D. The water beneath the boat absorbs the 500 N force but keeps the boat afloat.
Answer:
A
Explanation:
the boat does not have a force to counter act the boys it must give which means it moves cause it is one something that is not as dense as the boy (I THINK)