The empirical formula for Cl₂O₆ is ClO₃.
The empirical formula of any chemical compound is the atoms ratio present in the formula to simplest whole number. it is the simplest formula of any chemical compound.
the given molecular formula is :
Cl₂O₆ : by dividing the both the subscripts to 2 , to get simplest whole number. we get :
empirical formula : ClO₃
The molecular formula is Cl₂O₆. the molecular formula of any chemical formula is the representation of atom in the chemical equation with subscript to indicate number of atoms in the molecule.
Thus, The empirical formula for Cl₂O₆ is ClO₃.
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Write a balanced equation for the dissociation equilibrium of acetic acid in water:
Acetic acid upon dissociation in water gives acetate ion and hydrogen ion as written in the chemical equation:
[tex]\rm CH_{3}COOH \rightarrow CH_{3}COO^{-} + H^{+}[/tex].
What is acetic acid?Acetic acid is weak carboxylic acid. It is the simplest organic acid other than formic acid HCOOH. Acetic acid contains one methyl unit and the carboxyl group COOH.
Diluted acetic acid is used as vinegar to preserve food items such as pickle, salads etc. It gives a sore taste to the food also. Acetic acid is soluble in water and will dissociates into carboxylate ion and hydrogen ion.
Even though acetic acid easily loses a proton the carboxylate ion CH3COO- is not stable and it is a weak base the reverse of the reaction dominates in equilibrium.However in the presence of strong acids it can acts as a weak base also.
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Consider an experiment that mixes aqueous barium chloride with aqueous sodium sulphate. Write the balanced equation for the reaction and determine the g of precipitate formed. Given the following data, what is your % yield for the experiment? BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq)
Mass of barium chloride 4.50g
Mass of sodium sulfate 3.80g
Mass of dried precipitate 4.39g
The balanced equation of the reaction: [tex]BaCl_2 (aq) + Na_2SO_4 (aq) --- > BaSO_4 (s) + 2NaCl (aq)[/tex]
The percent yield of the experiment: 81.75%
Stoichiometric problemFrom the balanced equation of the reaction: [tex]BaCl_2 (aq) + Na_2SO_4 (aq) --- > BaSO_4 (s) + 2NaCl (aq)[/tex]
The mole ratio of the barium chloride and sodium sulfate is 1:1.
Recall that: mole = mass/molar mass
Molar mass of barium chloride = 208.23 g/mol
Molar mass of sodium sulfate = 142.04 g/mol
Mole of 4.50 g barium chloride = 4.50/208.23
= 0.023 mol
Mole of 3,80 g sodium sulfate = 3.80/142.04
= 0.027 g/mol
From the moles calculated, sodium sulfate is in excess while barium chloride is the limiting reactant.
The mole ratio of barium chloride and barium sulfate is 1:1. Thus, the equivalent mole of barium sulfate will also be 0.023 mol.
Molar mass of barium sulfate = 233.43 g/mol
Mass of 0.023 mol barium sulfate = 0.023 x 233.43
= 5.37 g
Percent yield of barium sulfate = 4.39/5.37 x 100
= 81.75%
Thus, the percent yield of the reaction is 81.75%.
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Which bone makes up the base and lower portion of the skull?
Answer:
The ethmoid, sphenoid, occipital, paired frontal, and paired temporal bones are the 5 bones that make up the base of the skull. Three areas of the skull base—the anterior, middle, and posterior cranial fossae—can be distinguished.
A chemical reaction is shown below:
Glucose + Oxygen --> Water + Carbon Dioxide
How many grams of water would be produced if the reaction contained each of the following:
20 g of glucose
15 g of oxygen
30 g of carbon dioxide
SELECT AN ANSWER
65 g of water
15 g of water
35 g of water
5 g of water
Answer:
Mass = 8.46 g
Explanation:
Given data Mass of water produced = ? Mass of glucose = 20 g Mass of oxygen = 15 g
Solution:
Chemical equation:
C₆H₁₂O₆ + 6O₂ → 6H₂O + 6CO₂
Number of moles of glucose:
Number of moles = mass/molar mass
Number of moles = 20 g/ 180.16 g/mol
Number of moles = 0.11 mol
Number of moles of oxygen:
Number of moles = mass/molar mass
Number of moles = 15 g/ 32 g/mol
Number of moles = 0.47 mol
now we will compare the moles of water with oxygen and glucose.
C₆H₁₂O₆ : H₂O
1 : 6
0.11 : 6/1×0.11 = 0.66
O₂ : H₂O
6 : 6
0.47 : 0.47
Less number of moles of water are produced by oxygen thus it will limit the yield of water and act as limiting reactant.
Mass of water produced:
Mass = number of moles × molar mass
Mass = 0.47 mol ×18 g/mol
Mass = 8.46 g
Explanation:
¿What is silicic anhydride?
¿What is silicic anhydride?
Silicon dioxide is a delicate, rough and light material. act as a substance thickener and free circulation.
In the cosmetic and cleaning industry, it allows the production of laundry soaps and all kinds of detergents. Incorporated into the paste for teeth, and combined with calcium carbonate, helps us remove plaque or tartar dental safely.
It is also used in the manufacture of glass, ceramics and cement. It is used in manufacture of sandpaper and blocks. As a catalytic converter, it acts in all acid production processes sulfuric. It is also used as a sharpener for the manufacture of discs, inks of printing, adhesives and polyester resins. Finally, it is used in the production of sand for cats.
The state of matter of a substance at a given temperature is determined by the relationship between ________________.
Intermolecular forces such as dipole-dipole forces, London dispersion forces exist between molecules. The state of matter of a substance at a given temperature is determined by the relationship between molecules.
What is intermolecular forces of attraction?
Intermolecular forces of attraction is force of attraction that make two molecule come closer. Intermolecular forces of attraction is directly proportional to the electronegativity of the molecule.
At a given temperature, the state of any matter can be defined on the basis of presence of forces of attraction between the molecules of the matter.
Thus, the state of matter of a substance at a given temperature is determined by the relationship between molecules.
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If an aerosol can contained 350 mL of CFC gas at a pressure of 5.7 atm, what volume would this gas occupy at 1.0 atm ?
Answer:
2.0 L
Explanation:
P1= first pressure
P2= second pressure
V1= first volume
V2= second volume
P1V1 = P2V2=
(5.7 atm)(350 mL) = (1.0atm)V2
V2= (5.7 atm)(350 mL) / (1.0 atm)=
V2= 1.99500 L = 2.0 L
Neptune has 14 moons. Moons usually orbit a planet or dwarf planet, though some have been observed orbiting asteroids. What role, if any, does gravity play when it comes to a body’s orbit? Explain
Answer:
Explanation:
gravity plays the role of the force that keeps the moon "attached" to the body. Gravity is pulling the moon into the planet, as long as the moon has a velocity that keeps it from falling directly into the planet it will orbit
a bowl of rice cools is that conduction convection or radiation?
Answer: It is conduction.
Explanation: Heat travels through solid substance by the process of conduction. By conduction heat from the fire heats up the pot and reaches the rice grains at bottom.
How many atoms are there in 4.00 moles of glucose, C6H12O6?
Answer:
4 moles of glucose = 4 x 6.022 x 10^23 = 2.4088 x 10^24 molecules of glucose.
There are 2.4088 x 10²⁴ atoms in 4 moles of glucose C₆H₁₂O₆
1 mole of any gas is defined as the number of atoms, molecules or ions present in the gas. 1 mole of any gas equals to 6.022 x 10²³ atoms , ions or molecules . 6.022 x 10²³ is known as avogadro's number.
We need a conversion factor that will converts from moles of glucose, C₆H₁₂O₆ to molecules of glucose.
That is, one mole of any substance contains 6.022 x 10²³ molecule of that substance.
4moles of glucose = 4 x 6.022 x 10²³ = 2.4088 x 10²⁴ molecules of glucose.
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How long will it take for 20% of the C-14 C - 14 atoms in a sample of C-14 C - 14 to decay? half life:5730 years
The time that it would take is 1843 years.
What is the age of the sample?The age of the sample is obtained by the use of the formula;
0.693/[tex]t_{\frac{1}{2} }[/tex] = 2.303/t log (No/N)
Given that;
[tex]t_{\frac{1}{2} }[/tex] = Half life of the C - 14
t = The age of the sample
No = The amount of the sample originally present
N = The amount of the sample present at time t
Given that we are told that 20% of the sample has decayed thus we have only 80% left
0.693/5730 = 2.303/t log(No/0.8No)
1.21 * 10^-4 = 2.303/t log(1.25)
1.21 * 10^-4 = 0.223/t
t = 0.223/1.21 * 10^-4
t = 1843 years
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Consider this chemical equation: 2Na(s)+Cl2(g) → 2NaCl(s)
In this reaction, sodium (Na) is: .
In this reaction, chlorine (Cl2) is: .
In this reaction, sodium chloride (NaCl) is: answer is soild , gas , soild 2nd part AgNO3 and Cu(NO3)2 3rd part is sliver
From the chemical equation showing the reaction, sodium chloride (NaCl) is a solid.
What is a chemical equation?A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.
From the reaction above, the reaction of a solid sodium and a chlorine gas gives a result of Sodium chloride solid.
There are some steps to be considered when balancing a chemical equation:
Count each type of atom in reactants and products. ...Place coefficients, as needed, in front of the symbols or formulas to increase the number of atoms or molecules of the substancesRepeat steps 1 and 2 until the equation is balanced.In conclusion, we have the fact that Sodium chloride which is also known commonly known as salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.
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A 5.31 g sample of compound that contains only hydrogen and sulfur was combusted, and yielded 10.0 g of SO₂ and 2.81 g of H₂O. The molar mass of the compound is 68 g/mol. What is this compound's molecular formula?
The molecular formula of the compound, given that it contains only hydrogen and sulfur is H₄S₂
Hoow do I determine the molecular formula?We'll begin by obtaining the mass of sulfur and hydrogen. This is illustrated below:
Mass of SO₂ = 10 gMolar mass of SO₂ = 64 g/mol Molar of S = 32 g/mol Mass of S =?Mass of S = (32 / 64) × 10
Mass of S = 5 g
Mass of compound = 5.31 gMass of S = 5 gMass of H = ?Mass of H = (mass of compound) – (mass of S)
Mass of H = 5.31 – 5
Mass of H = 0.31 g
Next, we shall determine the empirical formula
H = 0.31 gS = 5 gEmpirical formula =?Divide by their molar mass
H = 0.31 / 1 = 0.31
S = 5 / 32 = 0.156
Divide by the smallest
H = 0.31 / 0.156 = 2
S = 0.156 / 0.156 = 1
Thus, the empirical formula is H₂S
Finally, we shall determine the molecular formula. Details below
Empirical formula = H₂SMolar mass of compound = 68 g/molMolecular formula =?Molecular formula = empirical × n = mass number
[H₂S]n = 68
[(2×1) + 32]n = 68
34n = 68
Divide both sides by 34
n = 68 / 34
n = 2
Molecular formula = [H₂S]n
Molecular formula = [H₂S]₂
Molecular formula = H₄S₂
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Ability to do work.
O Potential Energy
O Energy
O Energy Transformation
Heat
Answer:
Energy
Explanation:
Energy is the ability to do work. I always remember this because that definition has never made any sense to me.
You can do work because of energy.
Hope this helps!
For each determine whether its crystal structure is FCC, BCC, or simple cubic and then justify your determination.
If the structure of the crystal contains an identical component at the center of the cube then it is said to be BCC whereas if there are parts in the center of each face along with those at the corners of the cube, then it is FCC.
How do you identify the structure of a crystal?Crystal structures may be narrated in several ways. The most usual manner is to refer to the size and shape of the cube and the locations of the atoms (or ions) within the cell. The crystal structure is set on by X-ray diffraction. A beam of X-rays strikes the crystal and the diffraction design is then used to study the structure, Matter can broadly be restricted into two categories based on its internal structure i.e. amorphous and crystalline. The morphology of crystals can be studied with the unaided eye in large well-evolve crystals and has been historically examined.
So we can conclude that the size of the unit cell and the positioning of atoms in a crystal may be set on from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
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is it possible to study allkind of ecosystem at one time?
Need help!!!!
H3C-CH-CH3
CH₂ CH3
1. The branched alkane contain 4 carbon in the parent chain and 1 substituent group
2. The branched alkane 10 carbon parent chain and 1 substituent group
A branched chain alkane or branched alkane is an alkane which has alkyl group bonded to its central carbon chain and branched alkane contain only carbon and hydrogen atom and with carbon connected to other carbon by single bond and the longest continuous chain of carbon atom is the parent chain and if there is no longest chain because two or more chain are the same longest length then the parent chain defined as the one with most branches and the substituent atom or group of atom substituent in place of hydrogen atom on the parent chain of hydrocarbon that's why here in the first picture the the branched alkane contain 4 carbon in the parent chain and 1 substituent group and in the second picture the branched alkane 10 carbon parent chain and 1 substituent group
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iron hydroxide decomposes to form iron oxide and water vapor. If 0.500 g of iron hydroxide are decomposed what mass of water vapor will be produced
The mass of water vapor that will be produced when iron hydroxide decomposes to form iron oxide and water vapor is 0.126 grams.
How to calculate mass?The mass of a substance can be calculated stoichiometrically. Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
According to this question, iron hydroxide decomposes to form iron oxide and water vapor. If 0.500 g of iron hydroxide are decomposed, the mass of water vapor produced can be calculated as follows;
2Fe(OH)₃ → Fe₂O₃ + 3H₂O
Based on the above equation, 2 moles of iron hydroxide decomposes into 3 moles of water vapor.
moles = 0.5g ÷ 106.87 g/mol = 0.00468mol of iron hydroxide.
0.00468 × 1.5 = 0.00701moles of water vapor.
mass of water vapor = 0.00701 moles × 18g/mol = 0.126g
Therefore, 0.126 grams of water vapor will be produced from 0.500 grams of iron hydroxide.
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One way to measure temperature in some applications is to monitor the gas pressure in a rigid, closed container. What is the final temperature (in °C) of such a vessel, calibrated to initially read 1.00 atm at 0.00 °C, if the pressure changes to 1.25 atm?
How do i start this?
The temperature of a vessel is 296.43 Kelvin when pressure reads 1.250 atm.
What is temperature?Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness.
At standard temperature and pressure, when pressure is 1.000 atm the value of temperature is 273,15 K.
If the pressure at temperature T changes to 1.250 atm
p1 = 1. 000 atm
T1 = 298.15 k
P2 = 1.250
T2 = ?
We apply Gay-Lussacs law
Using P1/ T1 = P2 /T2 all at constant volume
T2 = 296.43 K.
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what is the standard form for a linear equation?
The standard form for a linear equation is Ax + By = C with two variables.
What is a linear equation?Linear equations can be described as the equations of degree 1 and is a mathematical statement, which contains an equal sign (=) between the algebraic expression.
A linear equation is an equation for a straight line and their solutions will produce values, which when substituted for the unknown values and make the equation true.
Linear equations can be described as a combination of constants and variables. The standard form of a linear equation with one variable is expressed as ax + b = 0, where, a ≠ 0 and x is the variable.
A linear equation in two variables is expressed as ax + by + c = 0, where, a ≠ 0, b ≠ 0, x, and y are the variables.
The linear equation in three variables is expressed as ax + by + cz + d = 0, where a ≠ 0, b ≠ 0, c ≠ 0, x, y, z are the variables.
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Which of the following subject areas contains questions that can be answered by science?
a
Astrology
b
Nature
c
Philosophy
d
Spirituality
Nature contains questions that can be answered by science.
The correct option is B).
What is nature?
The word nature refers to the things we can see with our eyes generally they include: plants, animals, the landscape, and other features and products of the earth, as opposed to humans or human creations.
The science of nature helps us to understand how the world and the universe around us work.
There are five major branches of the Science of Nature:
.Chemistry
.Astronomy
.Earth science
.Physics
.Biology.
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Answer
A. Astrology
Explanation:
The rest isnt science its just like puedoscience so its A.
4. A 55 kg sled is sliding down a hill. At the 7 m mark, it has a velocity of 1.8 m/s. What is
the mechanical energy of the system?
Answer:
89.1Joule Because when Multiply The Half Of Mass With The Square of Velocity we Get We Get Eighty nine Point One
summarize how energy changes during a chemical reaction as bonds are broken and formed
During a chemical reaction: bonds in the reactants are broken new bonds are made in the products Energy is absorbed to break bonds. Bond-breaking is an endothermic process. Energy is released when new bonds form. Bond-making is an exothermic process.
Energy is absorbed when bonds are broken, and it is evolved when bonds are established.
What are chemical bonds?Chemical bonds is defined as the creation of a chemical compound through the creation of a chemical link between two or more atoms, molecules, or ions. To form bonds, atoms exchange or swap their valence electrons. To reach a complete outer energy level, which is the most stable configuration of electrons, atoms must form chemical bonds.
Because more energy is required to break bonds than is produced when new bonds are formed, energy is absorbed in some reactions. As a result, during a reaction, many kinds of bonds may form. Energy is released as a result of the creation of bonds. Energy is absorbed when bonds are broken.
Thus, when bonds are broken, energy is absorbed, and when bonds are formed, energy is evolved.
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Calculate the concentration (M) of sodium ions in a solution made by diluting 10.0 mL of a 0.774 M solution of sodium sulfide to a total volume of 100 mL.
The concentration of sodium ions in a solution made by diluting 10.0 mL of a 0.774 M solution of sodium sulfide to a volume of 100 mL would be 0.1548 M.
DilutionAccording to the dilution principle, the number of moles of solutes in a solution before and after dilution must be the same. This is expressed as the following equation:
[tex]m_1v_1 = m_2v_2[/tex]
Where [tex]m_1[/tex] is the molarity before dilution, [tex]v_1[/tex] is the volume before dilution, [tex]m_2[/tex] is the molarity after dilution, and [tex]v_2[/tex] is the volume after dilution.
In this case, [tex]m_1[/tex] = 0.774 M, [tex]v_1[/tex] = 10.0 mL, [tex]v_2[/tex] = 100 mL.
[tex]m_2[/tex] = [tex]m_1v_1/v_2[/tex]
= 0.774 x 10/100
= 0.0774 M
Thus, the new concentration of the sodium sulfide solution would be 0.0774 M.
Mole of the final solution: 0.0774 x 0.1 = 0.00774 mol
Sodium sulfide formula = [tex]Na_2S[/tex] ---> [tex]2Na^+ + S^{2-[/tex]
Equivalent mole of sodium ion = 0.00774 x 2
= 0.01548 mol
The concentration of sodium ions = mol/volume
= 0.01548/0.1
= 0.1548 M
In other words, the concentration of the sodium ions in the diluted solution would be 0.1548 M.
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(b) (i) What type of substance will neutralise potassium hydroxide solution?
Answer: An acidic substance
Explanation: An acidic substance will neutralize the potassium hydroxide solution because Potassium hydroxide is a strong base.
Answer:
An acidic substance
Explanation:
maaf kalo salah
Question 18 (1 point)
What is the pH of a buffer that is 0.086 M HF and 0.386 M LiF? The K₂ for HF is 3.5
x 10-4.
Your Answer:
Answer
The pH of a buffer that is 0.086 M HF and 0.386 M LiF when the K₂ for HF is 3.5x 10-4 is 2.802
The pH of a buffer solution is given by Henderson Hasselback equation.
pH=pKa+log[A-]/[HA]
Substituting the values, we get
pH=-log(3.5x10^-4)+log(0.086/0.386)
pH=-log(3.5x10^-4)-0.653
pH=3.455-0.653
pH=2.802
pH is the potenz of hydronium ion.It tells the acidic strength of a compound.Buffer solution resists the change in pH on the addition of weak acid or base and conjugate of weak acid or base.It is used in acid-base chemistry.Buffer solutions are used for keeping the pH at a constant value.To learn more about buffer solutions visit:
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at stp, o2(g) and o3(g) are two forms of the same element that have
At STP, O2(g) and O3(g) are two forms of the same element that have option 1: different molecular structures and different properties
Do o2 and o3 differ in any ways?Due to the release of heat during its breakdown into oxygen, ozone is less thermodynamically stable than oxygen. Ozone is made up of three oxygen molecules, making it in an unstable state. In order to become stable, ozone gives up one of its oxygen molecules in order to return to its diatomic state.
Therefore, Ozone (O2) and ozone (O3) both include oxygen atoms, but they differ in terms of their physical and chemical characteristics. Ozone has a strong, pungent odor, whereas oxygen is odorless. While oxygen liquefies at a much lower temperature than ozone, at -112 degrees Celsius, ozone does so.
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See full question below
At STP, oxygen exists in two forms, O2(g) and O3(g). These two forms of oxygen have 1. different molecular structures and different properties 2. different molecular structures and the same properties 3. the same molecular structure and different properties 4. the same molecular structure and the same properties
A compound has the empirical
formula given below.
C7H502
Which compound represents the molecular
formula with a scale factor of 2?
C14H10O4
C3.5H2.5O
C7H5O2
The molecular formula is obtained from the empirical formula by multiplying with an integer which is get by dividing the molecular mass by the formula mass. Thus if the integer is 2, then the molecular formula of the compound is C₁₄H₁₀O₄.
What is molecular formula?The molecular formula of a compound is used to represent the atom present in the compound with their correct number of moles. The empirical formula is derived from the mass percents of the elements in the whole compound.
The integer we get from dividing the molar mass by the formula mass is multiplied with the numbers in the empirical formula to get the molecular formula. Here, the empirical formula is C₇H₅O₂. Thus by multiplying it by 2 we get C₁₄H₁₀O₄.
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It is the simplest whole number ratio of elements in a compound. Molecular formula is n times the empirical formula, where n is integers 1,2,... The molecular formula is C[tex]_{14}[/tex]H[tex]_{10}[/tex]O[tex]_{4}[/tex].
What is empirical formula?
Empirical formula gives the proportion of the element that is present in a compound. It does not give information about the actual number or the arrangements of the atoms.
n= molecular formula÷ empirical formula
Empirical formula =C[tex]_7[/tex]H[tex]_5[/tex]0[tex]_2[/tex]
n=2
Substituting the given values
2= molecular formula÷ C[tex]_7[/tex]H[tex]_5[/tex]0[tex]_2[/tex]
molecular formula= C[tex]_7[/tex]H[tex]_5[/tex]0[tex]_2[/tex]×2
molecular formula=C[tex]_{14}[/tex]H[tex]_{10}[/tex]O[tex]_{4}[/tex]
Therefore, the molecular formula of the compound C[tex]_7[/tex]H[tex]_5[/tex]0[tex]_2[/tex] is C[tex]_{14}[/tex]H[tex]_{10}[/tex]O[tex]_{4}[/tex].
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Onisha wants to sort 20 objects into
groups by their color. She wants to record
what object was in each group. Which
would be the best way to record her
sorting?
A Draw each of the objects she sorted
and staple each drawing into a group.
B Make a chart and list the objects into
groups the way she sorted them.
Make a bar graph that shows how
many objects of each color there are.
D List all the objects and put a
checkmark by all the blue objects.p
Consider these two entries from a fictional table of standard reduction potentials.
X3++3e−⟶X(s)o=−1.75 V
Y3++3e−⟶Y(s)o=−0.50 V
What is the standard potential of a galvanic (voltaic) cell where X is the anode and Y is the cathode?
ocell=
The standard electrode potential of the voltaic cell is 1.25 V.
What is the cell potential?We know that a cell is composed of the anode and the cathode. Current would always enter in via the abode and then leave via the cathode. In any case, there is a metallic conductor that would always acts as a conduit for the electrons to pass through.
In this case, we can see the the cathode and the anode. The cathode is the part of the cell that gains electrons and is reduced while the anode is the part of the cell that is oxidized and there is a loss of electron there.
Now the cell potential can be obtained from;
standard potential = electrode potential of the cathode- Electrode potential of the anode
The standard potential = (-0.50) - (−1.75)
= 1.25 V
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