Tumu’s class was given an assignment to feature a scientist that contributed to the development of the cell theory. The class decided to use images to feature the scientist of their choice.
Which image would Tumu most likely use in his assignment to feature Rudolf Virchow?
the magnified shapes of cells in a piece of cork
the different cells that make up a plant leaf
the types of cells at work in the human body
the way root cells reproduce to increase root length
Answers
Answer:
The types of cells at work in the human body
Explanation:
Rudolf Virchow was a German physician who is known as the father of modern pathology. He contributed to the development of the cell theory by concluding that all cells come from preexisting cells. This led to the conclusion that diseases occur at the cellular level, which allowed scientists to diagnose diseases more accurately.
Considering that Virchow analyzed human cells, the image that Tumu would be most likely to use in his assignment is the one of the types of cells at work in the human body.
Answer:
D the way root cells reproduce to increase root length
Explanation:
Have a good day!
Related Questions
Solution Notes
8. Calculate the molarity of 500 ml of 0.0300 moles of NaOH.
Answers
Answer:
\(\huge\boxed{\sf M = 0.06\ M}\)
Explanation:
Given data:No. of moles = n = 0.03 mol
Volume = v = 500 ml = 0.5 L
Required:Molarity = M = ?
Formula:M = n / v
Solution:Put the given data in the above formula.
M = 0.03 / 0.5
M = 0.06 M\(\rule[225]{225}{2}\)
1. What is the new volume of a gas if 50 mL at 81.0 kPa has its
pressure increased to 101.3 kPa? (Temperature is constant.)
2. 720 mL of H₂ gas at 0°C and 126.6 kPa is changed to S.T.P. What
will be its new volume ?
Answers
Boyle's law states that the pressure of an ideal gas is inversely proportional to its volume at constant temperature.
The volume of a gas can be calculated using the Boyle's law equation as follows:
P₁V₁ = P₂V₂
Where;
P₁ = initial pressureV₁ = initial volumeP₂ = final pressureV₂ = final volume81 × 50 = 101.3 × V
V = 4050/101.3
V = 39.98mL
QUESTION 2:
According to question 2, 720 mL of H₂ gas at 0°C and 126.6 kPa is changed to S.T.P. The new volume can be calculated as follows:
720 × 126.6/273 = V × 101.33/273
333.89011 = 0.3711V
V = 899.7mL
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24. The Henry’s law constant for O2 is 1.3 × 10−3 M/atm at 25 °C. Assuming ideal solution behavior, what mass of oxygen, in grams, would be dissolved in a 40. L aquarium at 25 °C, assuming an atmospheric pressure of 1.00 atm, and that the partial pressure of O2 is 0.21 atm?
Please enter your answer with two sig figs, no units, no scientific notation.
Explain please <3
Answers
The aquarium has 0.35 g of dissolved oxygen in it.
What is mass?The quantity of matter in an object is expressed in terms of mass. It is a scalar number, and units like grams, kilograms, and pounds are used to measure it. Weight, the force of gravity acting on an object, is not the same as mass. An object's mass is a fundamental characteristic that exists regardless of where it is or the gravitational environment it is in.
How do you determine it?Henry's law, which connects the concentration of a gas in a solution to its partial pressure, can be used to determine the mass of oxygen (O2) that would be dissolved in a 40 L aquarium:
C = kH x P
where P is the partial pressure of the gas, kH is the Henry's law constant, and C is the concentration of the gas in the solution.
To solve the concentration by rearranging the equation, we obtain:
C = (kH x P)
Using the above values for kH and P, we obtain:
C = (1.3 10^-3 M/atm) x (0.21 atm) = 2.73 10^-4 M.
This indicates that the aquarium's dissolved oxygen concentration is 2.73 x 10^-4 M.
We can use the following equation to determine the mass of O2 dissolved in the aquarium:
Mass = concentration x volume x molar mass.
where O2 has a molar mass of 32 g/mol.
Inputting the values provided yields:
mass = (2.73 x 10^-4 M) x 40 L x 32 g/mol = 0.35 g
As a result, the aquarium has 0.35 g of dissolved oxygen in it.
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Based on your answer to part (e) above, in what region of the electromagnetic spectrum does this wavelength fall in (if in visible region then specify the color)?Part E asked If the wavelength on the electromagnetic spectrum is 450 nm, what is this wavelength in meters? answer was 4.5*10^-7
Answers
The question requires us to specify in which part of the electromagnetic spectrum the wavelength given (450 nm) falls.
Considering the electromagnetic spectrum scheme presented in the image below, we can affirm that decreasing the wavelength means increasing the energy (the smallest wavelength values shown, for example, fall in the gama ray section, which is a very energetic wave). Also, we can see that the visible region of the spectrum occurs between 380 and 750 nm:
Therefore, the wavelength given (450 nm or 4.50 x 10^-7 m) falls within the visible region of the spectrum and it refers to the blue color.
Aluminum undergoes a single-displacement reaction with copper (II) sulfate to form aluminum sulfate and _______________.
Answers
Ans cooper
Element Name that’s has 7 protons and electrons and 3 neutrons
Answers
Answer:
Nitrogen - 10
Explanation:
7 Protons and 7 electrons = neutral charge
7 Protons = Element N (Nitrogen)
Atomic Mass = # of Protons + # of Neutrons
Atomic Mass = 7 + 3
Atomic Mass = 10
Nitrogen - 10
.
A species is a group of organisms that closely resemble each other in physical appearance and behavior and can mate and produce young that can also mate and produce young. True or false?
false
true
Answers
Answer:
True
Explanation:
It's a true statement
Answer:
True
Explanation:
A species is a group of similar organisms that can breed with one another to produce fertile offspring. For example, humans are one species and dogs are another species. Individuals of the same species can reproduce to make more individuals of the same species.
If you have 4,3 moles of nitrogen gas at standard temperature and pressure (STP), how manyliters of gas do you have?0.192 L96.3L0.430 L52.1L
Answers
To answer this question we have to use ideal gas law:
\(PV=nRT\)Where P is the pressure of the gas, V is its volume, n is the number of moles of the gas, R is the ideal gas constant (0.082atmL/molK) and T is the temperature. Use this formula to find the volume by solving for V and replacing for the given values, remember that STP is standar temperature and pressure, which are 273.15K for temperature and 1atm for pressure:
\(\begin{gathered} V=\frac{nRT}{P} \\ V=\frac{4.3mol\cdot0.082atmL/molK\cdot273.15K}{1atm} \\ V=96.3L \end{gathered}\)According to this, we have 96.3 liters of gas.
The correct answer is the second choice.
How many oxygen atoms are present in one mole of potassium carbonate? K2CO3
Answers
The number of the oxygen atoms that we have in one mole of K2CO3 is 1.8 * 10^24 atoms.
What is the Avogadro's number?Avogadro's number is the number of particles (atoms, molecules, or ions) in one mole of a substance, which is approximately 6.022 x 10^23 particles/mol. This is what we are going to use in the solution so as to find the number of the oxygen atoms that is present in the compound shown in the question above
We know that;
Number of oxygen atoms = 1 * 3 * 6.02 * 10^23
= 1.8 * 10^24 atoms
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if you had the same amount of ammonium nitrate and water, what would happen to the temperature?
Answers
If you mixed the same amount of ammonium nitrate and water, it would cause the temperature to decrease. This is because the process of dissolving the ammonium nitrate in water is endothermic, meaning it absorbs heat from the surroundings, which results in a decrease in temperature.
The half reaction with a more positive standard reduction potential will
Answers
The half reaction with a more positive standard reduction potential will proceed spontaneously in a redox reaction
The half reaction with a more positive standard reduction potential will undergo reduction when compared to the half reaction with a more negative standard reduction potential.
Oxidation-reduction reactions, often known as redox reactions, are a set of chemical reactions that involve electron transfer between reactants. In a redox reaction, one reactant is oxidized, losing electrons, while the other reactant is reduced, gaining electrons.
The oxidation half-reaction is the process of losing electrons and increasing the oxidation number, whereas the reduction half-reaction is the process of gaining electrons and decreasing the oxidation number. The total reaction is referred to as the redox reaction.
Half-reaction:Half-reaction refers to the two parts of an oxidation-reduction reaction that happen separately. A half-reaction must always be either an oxidation reaction or a reduction reaction. It also describes the movement of electrons and hydrogen ions in an equation.
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PLEASE ANSWER QUICKLY!!!!
2KI (aq) + Cl₂(g) → 2KCl(aq) + 1₂(g)
What volume of 12 gas forms when
21 L Cl2 react at STP?
[?] L 12
Answers
The volume of 12 gas forms when 21 L Cl2 react at STP is 21 L.
To determine the volume of 12 gas (I assume you mean I2 gas) formed when 21 L of Cl2 reacts at STP (standard temperature and pressure), we need to use the ideal gas law equation.
The ideal gas law equation is given by:
PV = nRT
Where:
P = pressure
V = volume
n = number of moles
R = ideal gas constant
T = temperature
At STP, the pressure is 1 atm, and the temperature is 273.15 K.
From the balanced equation, we can see that the molar ratio between Cl2 and I2 is 1:1. So, if 21 L of Cl2 reacts, it will produce an equal volume of I2 gas.
Given that the volume of Cl2 is 21 L, we can assume the volume of I2 gas formed will also be 21 L.
Therefore, the volume of I2 gas formed is 21 L.
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A) Which statement correctly describes the relationship between molecular structure, the strength of electrostatic forces
between molecules, and the boiling point of a substance? (1 point)
The boiling point of a substance affects the strength of electrostatic forces, which can affect the molecular structure.
The boiling point of a substance affects its molecular structure, which can affect the the strength of electrostatic forces
Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a substance.
Stronger electrostatic forces cause a stronger molecular structure and lower boiling points.
Answers
The greater the electrostatic attraction in the molecule, the greater the boiling point of the compound.
We have to note that the molecular structure of a compound determines whether the compound will be polar or not and this in turn affects the electrostatic forces in the molecule.
Also, the electrostatic forces in the molecule determines certain important properties of the compound such as boiling point. The greater the electrostatic attraction in the molecule, the greater the boiling point of the molecule.
Hence, the statement which correctly describes the relationship between molecular structure, the strength of electrostatic forces between molecules, and the boiling point of a substance is; "molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a substance."
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Learn more:
Which of the following sentences describe how latitude affects a biome? (There may be more than one answer).
Question 4 options:
In the far north, the summers are too short and cold for trees.
As you travel east, the climate gets colder.
The closer the area is near to the equator, the hotter the weather.
The higher in elevation, the colder the environment.
Answers
Answer:
A and C
Explanation:
The other answers didn't seem reasonable,
I took the quiz and got it right.
If I am wrong, please correct me
The biome can be given as the collection of flora and fauna in the region. The latitude affects the biome, with the short summers in the north and hot weather at the equator.
What is latitude?The latitude can be given as the horizontal lines imaginary drawn on the earth. The equator is the center of latitude passing from the middle of the earth.
The sun's rays fall directly towards the equator, while the poles in the north and the south experiences the transverse rays of the sun.
The direct rays falling at the equator termed the area closer to the equator warmer, while the falling rays to the north resulted in the short summers and cold for trees. Thus, options A and C are correct.
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Which safety equipment is needed when working with materials that car
spatter?
Answers
Answer: Required personnel protection equipment (PPE) must be worn at all times
Explanation:
How is a plateau different from a fault-block mountain?
A plateau forms due to shearing, and a fault-block mountain does not.
A fault-block mountain forms from a reverse-fault, and a plateau does not.
A plateau forms when a flat block of rock is uplifted, and a fault-block mountain does not.
A fault-block mountain forms when the center block is uplifted, and plateau does not.
Answers
Answer:
A plateau forms when a flat block of rock is uplifted, and a fault-block mountain does not.
Explanation:
A plateau forms when a flat block of rock is uplifted, and a fault-block mountain does not.
What is plateau?A plateau, often referred to as a high plain as well as a tableland, is such a portion of a highland that would be made up of flat land that is significantly raised above the surroundings on at least one direction.
What is mountain ?A mountain would be an elevated area of the crust of the Earth, typically having steep sides which reveal a substantial amount of bedrock that has been exposed.
Therefor, a plateau forms when a flat block of rock is uplifted, and a fault-block mountain does not.
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Jessa examines a bullet at a crime scene. The markings, called
Answers
1) She would find "ballistic markings" or "striations."
2) She would find the whorl pattern of finger prints
What are the markings called?As a crime scene investigator, Jessa will search for distinctive signs on the bullet that could identify it as coming from a particular firearm. Common names for these stains include "ballistic markings" and "striations." When a bullet travels through a gun's barrel, it may leave behind distinctive traces due to flaws in or wear on the rifling, spiral grooves carved into the barrel to stabilize the projectile. These traces are imprinted on the bullet's surface and can be examined to identify the weapon type.
Jessa will likely use a comparison microscope to inspect the bullet and compare the ballistic marks to test-fired bullets from potential guns.
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Missing parts;
Jessa is a crime scene Investigator. She examines a bullet found at the scene and a fingerprint left in a blood smear. What type of marks might
link the bullet to a specific weapon? Which type of fingerprints has she found?
Jessa examines a bullet at a crime scene. The markings, called might link the bullet to a specific weapon. She also finds some
fingerprints smeared in the blood of the victim. These are
fingerprints.
____O2 → ____O3
Type of reaction: ____
Answers
When \(O_2\) is converted to \(O_3\), the kind of reaction that takes place is oxidation.
What is oxidation?Oxidation is a type of reaction that can be defined in several ways. These include:
Addition of oxygenRemoval of hydrogenIncrease in oxidation numberAddition of electronegative elementsRemoval of electropositive elementsOxidation is the reverse of reduction, which can be defined as:
removal of oxygenaddition of hydrogendecrease in oxidation numberaddition of electropositive elementsremoval of electronegative elementsThe conversion of \(O_2\) to \(O_3\) requires the addition of oxygen. Thus, it is an oxidation reaction.
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Starting with 0.3500 mol CO(g) and 0.05500 mol COCl2(g) in a 3.050 L flask at 668 K, how many moles of CI2(g) will be present at equilibrium?
CO(g) + Cl2(g)》COCl2(g)
Kc= 1.2 x 10^3 at 668 K
Answers
At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
1: Write the balanced chemical equation:
\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)
2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.
Initial:
\(C_O\)(g) = 0.3500 mol
\(Cl_2\)(g) = 0.05500 mol
\(C_OCl_2\)(g) = 0 mol
Change:
\(C_O\)(g) = -x
\(Cl_2\)(g) = -x
\(C_OCl_2\)(g) = +x
Equilibrium:
\(C_O\)(g) = 0.3500 - x mol
\(Cl_2\)(g) = 0.05500 - x mol
\(C_OCl_2\)(g) = x mol
3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:
Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]
4: Substitute the given equilibrium constant (Kc) value into the expression:
1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)
5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:
1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x
6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.
7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.
8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):
\(Cl_2\)(g) = 0.05500 - x
9: Calculate the value of \(Cl_2\)(g) at equilibrium:
\(Cl_2\)(g) = 0.05500 - x
\(Cl_2\)(g) = 0.05500 - (positive value of x)
10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.
Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
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What are the lengths of the diagonals of the kite?
Answers
The answer ( 13 and 8 )
x²=5²+12²
x²=25+144
x²=169
x=13
x²=5²+6²
x²=25+36
x²=61
x=7.8
x=8
Why is knowing the concentration of solutions important in the real world? Give an example to help you explain your answer.
Answers
Explanation: The concentration of a solution helps us to determine the collision speed between particles in a molecule or compound. Knowing the concentrations of components in solutions can help determine the health of the world.
The table below shows the dimensions of two colored cubes.
Dimensions of Cubes
Cube Side (cm) Mass
(g)
Blue 5 250
White 4 320
Which cube is denser?
Blue, because the ratio of its mass and side is higher.
White, because the ratio of its mass and side is lower.
Blue, because it has more volume and less amount of matter.
White, because it has less volume, but a lot more matter.
Answers
The white is denser because it has less volume, but a lot more matter. Option 4.
What is denisty?The density of a substance is the ratio of its mass and its volume. This can be mathematically expressed as:
Density = mass/volume.
For the cube with 5 cm sides and 250 g mass, the density can be derived by first calculating the volume as follows:
Volume = 5 x 5 x 5
= 125 \(cm^3\)
Its density can be calculated as:
Density = 250/125
= 2 g/\(cm^3\)
For the cube with a mass of 320 g and 4 cm sides, the volume and density can be calculated as follows:
volume = 4 x 4 x 4
= 64 \(cm^3\)
Its density can then be calculated as:
Density = 320/64
= 5 g/\(cm^3\)
Thus, the white cube is denser because it has a higher density by having less volume but more matter (mass).
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On another planet, the isotopes of titanium have the given natural abundances.
Isotope Abundance Mass (u)
46Ti 72.700% 45.95263
48Ti 12.600% 47.94795
50Ti 14.700% 49.94479
What is the average atomic mass of titanium on that planet?
Answers
Considering the definition of isotopes and atomic mass of an element, the average mass of titanium is 46.79 amu.
Definition of isotopeThe same chemical element can be made up of different atoms, that is, their atomic numbers or numer of protons are the same, but the number of neutrons is different. These atoms are called isotopes of the element.
Definition of atomic massThe atomic mass of an element is the weighted average mass of its natural isotopes.
In other words, the atomic masses of chemical elements are usually calculated as the weighted average of the masses of the different isotopes of each element, taking into account the relative abundance of each of them.
Atomic mass of the element in this caseIn this case, you know:
46 Ti isotope has an atomic mass of 45.95263 amu and a percent natural abundance of 72.7 %. 48 Ti isotope has an atomic mass of 47.94795 amu and a percent natural abundance of 12.6 %. 50 Ti isotope has an atomic mass of 49.94479 amu and a percent natural abundance of 14.7 %.Then, the average mass of titanium can be calculated as:
Average mass of titanium= 45.95263 amu×0.727 + 47.94795 amu×0.126 + 49.94479 amu×0.147
Solving:
Average mass of titanium= 46.79 amu
Finally, the average mass of titanium is 46.79 amu.
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In Bohr's model, what does the period and the groups represent?
Answers
Explanation:
The atomic number of each element is written above the symbol. A period is a horizontal row of the periodic table. ... A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. There are a total of 18 groups.
7.5 L of a gas at 2 ATM and a temperature of 75°C is changed and volume to 3.4 L and a pressure of .5 ATM what is the new temperature
Answers
Answer:
Explanation:
Combined Gas Law
T2= T1P2V2/ (P1V1) = 348.15 X .5 X 3.4/(2 X 7.5) =39.46 K or -233.69C
HELP PLEASE!
Based on your Retention factor values for the 5 dye standards, order the dyes from most polar to least polar.
Red #3 - 0.000
Blue #1 - 0.58
Yellow #5- 0.286
Red #40- 0.046
Blue #2- 0.095
Answers
Answer:
Red #3 is the most polar, and Blue #1 is the least polar.
Explanation:
To order the dyes from most polar to least polar, we need to look at the retention factor values. The lower the retention factor value, the more polar the molecule. So, based on the given values, the order from most polar to least polar would be:
Red #3 - 0.000
Yellow #5 - 0.286
Blue #2 - 0.095
Red #40 - 0.046
Blue #1 - 0.58
Express the units for rate constants when the concentrations are in moles per liter and time is in seconds for (a) zero-order reactions; (b) first-order reactions; (c) second-order reactions.
Answers
(a) For zero-order reactions, the unit of the rate constant (k) is mol/L*s. or
mol L⁻¹ s⁻¹
(b) For first-order reactions, the unit of the rate constant (k) is 1/s.
(c) For second-order reactions, the unit of the rate constant (k) is L/mol*s. or mol⁻¹ L s⁻¹.
For Zero Order Reaction
The concentration of the reactants does not change over time, and the concentration rates are constant in zero order processes.
A → Product
The units of k for a zero order reaction are what?
The letter k stands for the reaction's rate constant.
The rate constant of a zero-order reaction is written as concentration/time, or M/s, where M is the molarity and s is one second.
The rate constant is measured in units of k = mol L-1 s-1.
For First-order reactions
The concentration of one of the reactants has a direct correlation with the reaction rate in a first-order reaction. A products are a common general form of first-order reactions. A → Product
The first-order reaction's differential rate is as follows:
rate=−Δ[A]/Δt = k[A]
When the concentration of A doubles, the response rate also doubles; similarly, when the concentration of A is multiplied by ten, the reaction rate multiplies by ten; and so on. First-order rate constants are measured in reciprocal seconds (s1) since the reaction rate is always measured in moles per litre per second.
For Second-order reactions
A second-order reaction is classified as being simple if its rate is proportional to the square of the concentration of a single component. These often have products in form 2A. The rate of a second type of second-order reaction is inversely correlated with the product of the concentrations of the two reactants. These reactions typically result in compounds of the form A + B. A dimerization reaction is an illustration of the former, in which two smaller molecules, each referred to as a monomer, combine to create a larger molecule (a dimer).
The following is the differential rate law for the simplest second-order reaction with 2A products:
rate=−Δ[A] / 2 Δt=k[A]²
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Strontium chlorate is mixed with ammonium phosphate
Answers
Explanation:
Please, if I may ask, what is the exact question?
Which scientist proposed the idea of the 'nucleus' after the unexpected results of his students’ gold foil experiment?
Group of answer choices
Democritus
Dalton
Bohr
Rutherford
Answers
Answer:
D
Explanation:
The nucleus was postulated as small and dense to account for the scattering of alpha particles from thin gold foil, as observed in a series of experiments performed by undergraduate Ernest Marsden under the direction of Rutherford and German physicist Hans Geiger in 1909.
For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced.
reaction
4 HF (9) + SiO₂ (s) → SiF4(9) + 2 H₂O(g)
2 Cl(aq) + 2 H₂O 2OH(aq) + H₂(g) + Cl₂(9)
-
H₂S(aq) + 2NaOH(aq) → Na₂S(aq) + 2 H₂O(
2 H₂(g) + O₂(g) 2 H₂O(g)
-
oxidized
O
O
O
highlighted atom is being...
O
reduced
O
O
O
neither oxidized
nor reduced
O
O
O
S
Answers
- In reactions 1 and 2, the highlighted atom (oxygen) is reduced.
- In reaction 3, the highlighted atom (sulfur) is neither oxidized nor reduced.
- In reaction 4, the highlighted atom (oxygen) is reduced.
In the given chemical reactions, we need to identify whether the highlighted atom is being oxidized or reduced. Let's analyze each reaction individually:
Reaction 1: 4 HF (g) + SiO₂ (s) → SiF₄ (g) + 2 H₂O (g)
In this reaction, the highlighted atom is oxygen (O). Oxygen in SiO₂ undergoes a change in oxidation state from -2 to 0 in SiF₄. Therefore, the highlighted atom (oxygen) is reduced.
Reaction 2: 2 Cl (aq) + 2 H₂O (l) → 2 OH (aq) + H₂ (g) + Cl₂ (g)
In this reaction, the highlighted atom is oxygen (O). Oxygen in H₂O undergoes a change in oxidation state from -2 to -1 in OH. Therefore, the highlighted atom (oxygen) is reduced.
Reaction 3: H₂S (aq) + 2 NaOH (aq) → Na₂S (aq) + 2 H₂O (l)
In this reaction, the highlighted atom is sulfur (S). Sulfur in H₂S undergoes a change in oxidation state from -2 to -2 in Na₂S. Therefore, the highlighted atom (sulfur) is neither oxidized nor reduced.
Reaction 4: 2 H₂ (g) + O₂ (g) → 2 H₂O (g)
In this reaction, the highlighted atom is oxygen (O). Oxygen in O₂ undergoes a change in oxidation state from 0 to -2 in H₂O. Therefore, the highlighted atom (oxygen) is reduced.
To summarize:
- In reactions 1 and 2, the highlighted atom (oxygen) is reduced.
- In reaction 3, the highlighted atom (sulfur) is neither oxidized nor reduced.
- In reaction 4, the highlighted atom (oxygen) is reduced.
It's important to note that oxidation and reduction involve changes in the oxidation state of atoms, indicating the gain or loss of electrons. The analysis above is based on the change in oxidation state of the highlighted atom in each reaction.
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