Answer:
An atom becomes anion when it gains or loses electrons. The ions that are formed when an atom loses electrons are positively charged because they have more protons in the nucleus than electrons in the electron cloud.
Explanation:
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Answer: Sulfur atom will form a cation on loosing electrons.
Explanation:
There are 3 subatomic particles present in an atom. They are: protons, electrons and neutrons.
Protons carry positive charge, electrons carry negative charge and neutrons does not carry any charge.
Any neutral atom has equal number of protons and electrons.
An ion is formed when atom looses or gain electron.
If an atom gains electrons, it will have more number of electrons than protons. Thus, it will carry negative charge and form an anion.
If an atom looses electrons, it will have less number of electrons than protons. Thus, it will carry positive charge and forms a cation.
It is given that sulfur atom looses an electron. So, this atom will have more number of protons than electrons. Thus, it will form a cation.
Hence, sulfur atom will form a cation on loosing electrons.
The complete combustion of which of the following substances produces carbon dioxide and water?
NO
K2CO3
C8H18
CaHCO3
Answer:The correct answer is C8H18.
Explanation:
Answer:
C₈H₁₈
Explanation:
Octane is an alkane which which is combustible in air.
The combustion of octane C₈H₁₈ in sufficient supply of oxygen produces carbon (IV) Oxide and water only.
Sufficient supply of oxygen ensures there is complete combustion of octane.
2C₈H₁₈ ₍l₎ + 25O₂₍g₎ → 16CO₂₍g₎ + 18H₂O₍l₎
Which statement correctly identifies the nuclide that is most likely to be unstable and describes why?
a) Carbon-14 (14C) is likely an unstable nuclide because it has 8 neutrons and 6 protons, and the ideal neutron-to-proton ratio is 1:5.
b) Uranium-238 (238U) is likely an unstable nuclide because it has a neutron-to-proton ratio that is 1.6:1 and the ideal neutron-to-proton ratio is 1:1.
c) Carbon-14 (14C) is likely an unstable nuclide because it has 8 neutrons and 6 protons, and the ideal neutron-to-proton ratio is 1:2.
d) Uranium-238 (238U) is likely an unstable nuclide because it has a neutron-to-proton ratio that is 1.6:1 and the ideal neutron-to-proton ratio is 1:2.
what is the mass in kg of 32500 g bag of sand
Answer:
32.5kg
Explanation:
if 1kg = 1000g,
then xkg=32500g
to convert, divide by 1000 32500/1000=32.5kg
You have a 15.0 gram sample of gold at 20.0°C. How much heat does it take to raise the temperature to 100.0°C?
Answer:
=154.8 J
Explanation:
Change in enthalpy = MC∅ where M is the mass of the substance, C is the specific heat capacity and ∅ is the change in temperature.
Change in temperature = 100.0°C-20.0°C=80°C
ΔH=MC∅
The specific heat capacity of gold= 0.129 J/g°C
ΔH= 15.0g×0.129J/g°C×80°C
=154.8 J
To raise the temperature of a 15.0 gram sample of gold from 20.0°C to 100.0°C, approximately 154.8 joules of heat energy is required, using the formula q = mcΔT where c is the specific heat capacity of gold.
To calculate the heat needed to raise the temperature of gold, you can use the formula:
Q = mcΔT
Where Q is the heat, m is the mass of the gold, c is the specific heat capacity of gold, and ΔT is the change in temperature.
Calculate the change in temperature: ΔT = 100.0°C - 20.0°C = 80.0°C
Look up the specific heat capacity of gold, which is 0.129 J/g°C
Substitute the values into the formula: Q = 15.0g × 0.129 J/g°C × 80.0°C = 154.8 J
Water striders are insects that have the ability to walk across the surface of water. Which properties of water allow the water strider to do this? Choose 2 answers: Choose 2 answers: (Choice A) A Surface tension (Choice B) B Adhesion (Choice C) C Specific heat (Choice D) D Capillary action
The properties of water that enables the water striders to walk across the surface of water is surface tension and adhesion.
Surface tension is a force that acts on the surface of water that makes it behave as if it is a stretched elastic skin. The ability of water molecules to stick to other surfaces is called adhesion.
As a result of surface tension and adhesion, insects such as water striders are able to walk across the surface of water.
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A solution is made by dissolving 19.5 grams of glucose (C6H12O6) in 0.245 kilograms of water. If the molal freezing point constant for water (Kf) is -1.86 °C/m, what is the resulting Δtf of the solution? Show all he steps taken to solve this problem.
Will make brainliest!!
20 points!!
Answer:
- 0.8217°C.
Explanation:
We can solve this problem using the relation:ΔTf = Kf.m,
ΔTf is the depression in the freezing point.
Kf is the molal freezing point constant for water (Kf = -1.86 °C/m).
m is the molality of glucose.
We need to calculate the molality:Molality (m) is the no. of moles of solute in 1.0 kg of solvent.
∴ m = (mass/molar mass) of glucose/(mass of water (kg))
∴ m = (19.5 g/180.156 g/mol)/(0.245 kg) = 0.4418 m.
∴ ΔTf = Kf.m = (-1.86 °C/m)(0.4418 m) = - 0.8217°C.
How many moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia?
Answer:
0.0116 mol.
Explanation:
Suppose that the reaction proceeds at STP conditions.It is known that at STP: 1 mol of any gas occupies 22.4 L.
Using cross multiplication:
1 mol of NH₃ occupies → 22.4 L.
??? mol of NH₃ occupies → (520 mL) 0.52 L.
∴ The no. of moles of (520 mL) NH₃ produced = (1 mol)(0.52 L)/(22.4 L) = 0.0232 mol.
For the balanced reaction:3H₂ + N₂ → 2NH₃.
3 mol of H₂ react with 1 mol of N₂ to produce 2 mol of NH₃.
Using cross multiplication:
1 mol of N₂ produce → 2 mol of NH₃, from stichiometry.
??? mol of N₂ produce → 0.0232 mol of NH₃.
∴ The no. of moles of N₂ needed = (1 mol)(0.0232 mol)/(2 mol) = 0.0116 mol.
Approximately 0.0116 moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia. This calculation is based on the balanced equation N₂ + 3 H₂ → 2 NH₃ and the molar volume of a gas at STP. It ensures that the stoichiometric ratio is maintained.
First, let's recall the balanced chemical equation for the synthesis of ammonia:
N₂ + 3 H₂ → 2 NH₃
According to the balanced equation, 1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia. Given that volume and moles correlate under ideal conditions (at STP - Standard Temperature and Pressure), 1 mole of gas occupies 22.4 liters (or 22,400 mL). To find the moles of ammonia produced, we can use the given volume:
Number of moles of ammonia (NH₃) = Volume of NH₃ / Molar volume at STP
= 520 mL / 22400 mL/mol
= 0.0232 moles of NH₃
From the stoichiometry of the reaction, 2 moles of NH₃ are produced from 3 moles of H₂ and 1 mole of N₂. Therefore, we need to find out how many moles of nitrogen (N₂) are required to produce 0.0232 moles of NH₃. Using the mole ratio from the balanced equation:
(1 mole of N₂) / (2 moles of NH₃) = x moles of N₂ / 0.0232 moles of NH₃
x = 0.0232 / 2
= 0.0116 moles of N₂
Thus, approximately 0.0116 moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia.
Is burning of wood a reversible or irreversible change
Answer:
can you reverse the ashes back into wood? If you can't then it is irreversible
How do you measure density
Answer:
d = m / v
Explanation:
This is the formula for density. d stands for density. m stands for mass. lastly, v stands for volume. just divide the mass by the volume and boom, you've got the density of an object ^-^
What happens when an atom of sulfur combines with two atoms of chlorine to produce SCI2?
A.
Each chlorine atom shares a pair of electrons with the sulfur atom.
B.
An electron is transferred from each chlorine atom to the sulfur atom.
C.
An electron is transferred from the sulfur atom to each chlorine atom.
D.
Each chlorine atom shares all its valence electrons with the sulfur atom.
Answer:
A.) Each chlorine atom shares a pair of electrons with the sulfur atom.
There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. The correct option is option A.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Covalent compounds are formed by covalent bond and ionic compounds are formed by ionic bond. The melting and boiling points are higher in ionic compounds.
Covalent bond is formed by sharing of electron and ionic bond are formed by complete transfer of electron. Ionic bonds are stronger than covalent bonds. SCI[tex]_2[/tex] is a covalent compound. During formation of SCI[tex]_2[/tex], each chlorine atom shares a pair of electrons with the sulfur atom.
Therefore, the correct option is option A.
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“Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C.”
What topic is the teacher most likely talking about?
Answer:
Explanation:
Quick Answer: Likely fractional distillation.
The distillation taking place has heat that is not uniformly distributed. Hot air rises, so the temperature at the top is greated than at the bottom. When petroleum is distilled various organics come off at various temperatures and at different levels of distillery apparatus.
plese HELP I AM NEW
On the basis of Bohr's model, the radius of the 3rd orbit
is -
(A) Equal to the radius of first orbit
(B) Three times the radius of first orbit
(C) Five times the radius of first orbit
(D) Nine time the radius of first orbit
Answer:
[tex]\boxed{\text{(D) Nine times the radius of the first orbit}}[/tex]
Explanation:
On the basis of Bohr's model, the radius of the nth orbit is
r = a₀n²
where a₀ is a constant called the Bohr radius.
r₃\r₁ = (a₀ × 3)²/(a₀ × 1)² = 9/1 = 9
The radius of the third Bohr orbit is nine times the radius of the first orbit.
Answer:
The correct answer is option D.
Explanation:
Formula used for the radius of the [tex]n^{th}[/tex] orbit will be,
[tex]r_n=\frac{n^2\times 52.9}{Z}[/tex] (in pm)
where,
[tex]r_n[/tex] = radius of [tex]n^{th}[/tex] orbit
n = number of orbit
Z = atomic number
Radius of the first orbit, n = 1
[tex]r_1=\frac{1^2\times 52.9}{Z}=\frac{1\times 52.9}{Z}[/tex]..[1]
Radius of the third orbit, n = 3
[tex]r_3=\frac{3^2\times 52.9}{Z}=\frac{9\times 52.9}{Z}[/tex]..[2]
[1] ÷ [2]
[tex]\frac{r_1}{r_3}=\frac{\frac{1\times 52.9}{Z}}{\frac{9\times 52.9}{Z}}[/tex]
[tex]r_1\times 9=r_3[/tex]
The radius of the 3rd orbit is nine times the radius of first orbit.
which is the most concentratic acid
Answer:
Tetraoxosulphate vi acid (H2SO4)
Explanation:
Becauses it ionizes completely
Answer:
carborane acid
Explanation:
Complete the paragraph to describe the characteristics of a borane molecule (BH3). The Lewis structure and table of electronegativities are given.
The bond polarities in BH3 are , the molecular shape is , and the molecule is .
Answer:
nonpolar, trigonal planar and nonpolar
Explanation:
The borane molecule BH3 has nonpolar bonds due to the similar electronegativities of boron and hydrogen, a trigonal planar molecular shape, and is nonpolar overall due to its symmetrical structure.
Explanation:Complete the paragraph to describe the characteristics of a borane molecule (BH3). The bond polarities in BH3 are nonpolar, the molecular shape is trigonal planar, and, due to its symmetry, the molecule is nonpolar.
The borane molecule, BH3, consists of a boron atom undergoing sp² hybridization. The boron atom is involved in three bonds with hydrogen atoms, resulting in a trigonal planar structure. This configuration uses three sp² hybrid orbitals where each of the boron's valence electrons pairs with a hydrogen electron, forming covalent bonds. Despite the polar bond character between boron and hydrogen, due to similar electronegativities of 2.04 for boron and 2.20 for hydrogen, the symmetry of the molecule ensures those individual dipoles cancel out, rendering the molecule nonpolar on the whole.
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1) A light bulb takes in 30 of energy per second. It transfers 3j as use
energy. Calculate the efficiency.
second. It transfers 3j as useful light energy and 27J as heat energy. Calculate the efficiency
Answer:
[tex]\boxed{\text{10 \%}}[/tex]
Explanation:
The formula for efficiency is
[tex]\begin{array}{rcl}\text{Efficiency} & = & \dfrac{\text{useful energy out}}{\text{energy in}} \times 100 \,\% \\\\\eta & = & \dfrac{w_{\text{out}}}{w_{\text{in}} } \times 100 \,\%\\\end{array}[/tex]
Data:
Useful energy = 3 J
Energy input = 30 J
Calculation:
[tex]\begin{array}{rcl}\eta & = & \dfrac{\text{3 J}}{\text{30 J}} \times 100 \,\%\\\\\eta & = & 10 \, \%\\\end{array}\\\text{ The efficiency is }\boxed{\textbf{10 \%}}[/tex]
The light bulb's efficiency is calculated as 10%, which is the ratio of the useful light energy output (3 joules) to the total energy input (30 joules) per second.
Explanation:To calculate the efficiency of a light bulb, you need to compare the useful energy output to the total energy input. In this case, the bulb takes in 30 joules of energy per second and transfers 3 joules as useful light energy. The efficiency can be calculated using the formula:
Efficiency (%) = (Useful Energy Output / Total Energy Input) × 100
Plugging the given values into the formula, we get:
Efficiency (%) = (3 J / 30 J) × 100 = 10%
Therefore, the light bulb has an efficiency of 10%.
Jason combines the two intermediate steps shown.
Na(g)+O2(g) ->2NO(g)
2NO(g)+O2(g) 2NO2(g)
Which best describes what Jason should do with the oxygen molecules?
Place two of them as products.
Place two of them as reactants.
Cancel them out because there is one in each equation.
Double them because there is one in each equation.
Answer:
Place two of them as reactants.
Explanation:
We have the two steps of reactions:1) N₂(g ) + O₂(g) → 2NO(g).
2) 2NO(g )+ O₂(g) → 2NO₂(g).
Adding the two equation with cancelling the intermediate (NO), we get:
N₂(g ) + 2O₂(g) → 2NO₂(g).
NO is cancelled out because there is one in each equation in the products side in eq. 1 and in oriduct side in eq. 2.
So, we place two of oxygen as reactants.
Answer:
Place two of them as reactants
Explanation:
- The equation 2C3H OH + 902 — 6CO2 + 8H20 is an example of which type of reaction?
single-replacement reaction
combustion reaction
double-replacement reaction
decomposition reaction
Final answer:
The equation exemplifies a combustion reaction, where an alcohol reacts with oxygen to produce carbon dioxide and water, commonly releasing heat and light.
Explanation:
The equation provided (2C₃H₅OH + 9O₂ ⇒ 6CO₂ + 8H₂O) is an example of a combustion reaction. In such a reaction, an organic compound (in this case, an alcohol) reacts with oxygen gas to produce carbon dioxide and water as products. Combustion reactions are commonly known for releasing energy in the form of heat and light, which is why they are often associated with burning.
In the combustion reaction given, C₃H₅OH (an alcohol) combusts in the presence of oxygen (O₂) to form carbon dioxide (CO₂) and water (H₂O). This type of reaction is easy to recognize because it typically involves a hydrocarbon (or another organic compound) and oxygen as reactants.
Examples of other types of reactions include:
Single Replacement Reaction: One element replaces a similar element in a compound.Double Replacement Reaction: The ions of two compounds exchange places in an aqueous solution to form two new compounds.Decomposition Reaction: A single substance breaks down into two or more substances.WHAT IS RAIN-WATER HARVESTING?
Answer:
Explanation:
Rainwater harvesting is the accumulation and storage of rainwater for reuse on-site, rather than allowing it to run off. Rainwater can be collected from rivers or roofs, and in many places, the water collected is redirected to a deep pit (well, shaft, or borehole), a reservoir with percolation, or collected from dew or fog with nets or other tools. Its uses include water for gardens, livestock,[1] irrigation, domestic use with proper treatment, indoor heating for houses, etc. The harvested water can also be used as drinking water, longer-term storage, and for other purposes such as groundwater recharge.
Rainwater harvesting is one of the simplest and oldest methods of self-supply of water for households usually financed by the user.[2]
Answer:
Rainwater harvesting is discussed below.
Explanation:
Rainwater harvesting is assembling the run-off from construction or other impenetrable covering to save it for succeeding use. Traditionally, this comprises collecting the rainwater from a rooftop. The rainwater will accumulate in gutters that route the water into downspouts and then into some kind of accommodation container.What is true of dynamic equilibrium?
Answer:
Dynamic equilibrium is a state in which reactant is converted into products at the same rate. At the beginning of a reaction, the reactants are converted to products and reaction goes into forwarding direction.
But in reversible reaction products start changing into reactants and reaction goes in the reverse direction until an equilibrium is reached. The state where the rates of all the reactants and products become equal and no more changes take place except the concentration is called dynamic equilibrium.
All the changes in dynamic equilibrium cancel out each other and the system seems to be at equilibrium.
Answer:
all the changes to a system cancel out
Explanation:
A P E X
How much heat, in joules and in calories, is required to heat a 28.4-g (1-oz) ice cube from −23.0 °C to −1.0 °C?
a. The quantity of heat in Joules is equal to 1,305.832 Joules.
b. The quantity of heat in Calories is equal to 312.10 Cal.
Given the following data:
Mass of ice cube = 28.4 gramsInitial temperature = -23.0°CFinal temperature = -1.0°CScientific data:
Specific heat capacity of ice = 2.09 J/g°CTo determine the quantity of heat in Joules:
Mathematically, quantity of heat is given by the formula;
[tex]Q=mc\theta[/tex]
Where:
Q represents the quantity of heat.m represents the mass of an object.c represents the specific heat capacity.∅ represents the change in temperature.Substituting the given parameters into the formula, we have;
[tex]Q = 28.4 \times 2.09 \times (-1.0 -[-23.0])\\\\Q=59.356 \times (-1.0+23.0)\\\\Q=59.356 \times22[/tex]
Quantity of heat, Q = 1,305.832 Joules.
In Calories:
[tex]Calories =\frac{1305.832}{4.184}[/tex]
Calories = 312.10 Cal.
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As an acid is added to neutral water the H will
Answer:
decrease
Explanation:
I assume you mean pH, the pH will decrease as there are more H+ ions inside the water
Answer:
dissolve i believe its been two years since i was in the class.
Explanation:
When the volume and number of particles of a gas are constant which of the following is also constant
It is the Avogadro's law which explains the relationship between the number of moles and the volume. When the volume and the number of moles are constant then the pressure and temperature are constant.
What is Avogadro's law?The law states that equal volumes of all gases under the similar conditions of temperature and pressure contains equal number of molecules. The law can be mathematically expressed as:
V ∝ n
Here 'V' is the volume and 'n' is the number of moles.
It follows that the volume of a gas is directly proportional to the number of molecules. But the number of molecules (N) of a gas is directly proportional to the number of moles (n).
Thus when the volume and number of particles of a gas are constant then the pressure and temperature are also found to be constant.
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In which of the following is concentration expressed in percent by volume?
10% (v)
10% (m/m)
10% (m/v)
10% (v/v)
Answer:
Concentration expressed in percent by volume by volume is 10%(v/v).
Explanation:
w/w % or m/m% : The percentage mass or fraction of mass of the of solute present in total mass of the solution.[tex]w/w\%=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100[/tex]
w/v % or m/v: The percentage of mass of the of solute present in total volume of the solution.[tex]w/v\%=\frac{\text{Mass of solute}}{\text{Volume of solution}}\times 100[/tex]
v/v % : The percentage volume of the of solute present in total volumeof the solution.[tex]v/v\%=\frac{\text{Volume of solute}}{\text{Volume of solution}}\times 100[/tex]
Concentration expressed in percent by volume by volume is 10%(v/v).
The concentration expressed in percent by volume is 10% (v/v). This denotes that 10% of the total volume of the solution is made up of a particular solute.
Explanation:Concentration expressed in percent by volume is represented as 10% (v/v). This means that the percentage is derived from the ratio of the volume of the solute to the volume of the solution, and then multiplied by 100 to get the percentage. For instance, if you have a solution with 10ml of ethanol mixed with 90ml of water, the volume ratio of ethanol to the total solution is 10ml/100ml=0.1, and when multiplied by 100 we get a 10% (v/v) ethanol solution. It's reflected as 10% of the total volume of the solution is comprising of the solute (ethanol).
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which of the following is described by the equation H2O(s)+ heat=H2O(I)
A Freezing
Melting
Condensing
Evaporating
Answer: Melting
Explanation: Just confirming the other answer
This equation described is of Melting.
What is melting?Melting is the change of a solid into a liquid when heat is applied to the substance.How solid changes to liquid in heating? Application of heat to the molecules of a solid , speed up the motion and molecules overcomes the attractions and move past each other as a liquid.
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Why is the structure of molecule important to its function?
Answer:
In materials of molecular structure, the nature of intermolecular and intramolecular bonds has a decisive influence on their characteristics and properties. Characteristics such as melting and boiling points, mechanical strength and hardness depend on the type of such bonds.
Calculate the mass percent of hydrogen in methyl acetate
Answer:
8.16%
Explanation:
We are to calculate the mass percent of hydrogen in Methyl Acetate.
We know that the formula of Methyl Acetate is [tex]C_3H_6O_2[/tex] so firstly we will find its molecular mass.
Molecular mass of ([tex]C_3H_6O_2[/tex]) = [tex](12.01 \times 3)+(1.0 \times 6)+(15.9 \times 2)[/tex] = 74.08 g
Mass of Hyrdogen in ([tex]C_3H_6O_2[/tex]) = [tex]1.00784 \times 6[/tex] = 6.05 g
Mass percent of Hydrogen in Methyl Acetate = [tex]\frac{6.05}{74.08} \times 100[/tex] = 8.16%
State Avogadro's Hypothesis.
Answer: Avogadro's Hypothesis simply states that all gases of equal volume have the same number of molecules.
Explanation: Avogadro's Hypothesis is an experimental gas law and it serves as a specific case of the ideal gas law. Mathematically,
Volume (V) is proportional to the Number of mole (n) of the gas
V/n = K
Where K is the constant of proportionality.
Avogadro's hypothesis states that equal volumes of gases contain the same number of particles. It is an important concept in the study of gases.
Explanation:Avogadro's hypothesis states that equal volumes of gases, at the same temperature and pressure, contain the same number of particles. This hypothesis helps explain the concept of molar volume and is a fundamental principle in the study of gases. For example, 1 mole of any gas occupies the same volume as 1 mole of any other gas at the same temperature and pressure.
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Blood serum is typically about 0.0044 M in K+ (aq). Calculate the mass of the potassium ions in 4,785. mL of blood serum. The molar mass of potassium is 39.10 g/mol
Answer:
0.823 g.
Explanation:
Molarity (M) is defined as the no. of moles of solute dissolved in a 1.0 L of the solution.M = (no. of moles of K⁺)/(Volume of the solution (L).
∵ no. of moles of K⁺ = (mass/molar mass) of K⁺.
∴ M = (mass/molar mass) of K⁺/(Volume of the solution (L).
M = 0.0044 M.
Volume of the solution = 4785.0 mL = 4.785 L.
mass of K⁺ = ??? g.
molar mass of K⁺ = 39.01 g/mol.
∴ mass of K⁺ = (M)((molar mass of K⁺)(volume of the solution (L)) = (0.0044 M)(39.10 g/mol)(4.785 L) = 0.823 g.
0.00781 g = kg
helppppp
Answer: The answer is: " 7.81 kg " .
___________________________________________________
Explanation:
___________________________________________________
Note the exact conversion: 1000 g = 1 kg ;
0.00781 g = ? kg :
So: To convert "0.0781 g" ; to "units in kg" ;
→ we multiply the value: 0.00781 g ; by "1000" ;
So: Given: " 0.00781 g " ;
→ we move the decimal point "3 (three) spaces forward" ;
to get: " 7.81 kg " .
___________________________________________________
Hope this helps!
Wishing you the best in your academic pursuits
— and within the "Brainly" community!
___________________________________________________
Answer:
0.00000781kg
Explanation:
Describe the redox reaction. Check all that apply 2AI(s) + 3ZnCI2(g) → 3Zn(s) + 2AICI3(aq).
Aluminum atoms transfer electrons to chlorine atoms.
Zinc is reduced.
Zinc is the reducing agent.
The oxidation number of chlorine does not change.
Aluminum is oxidized.
Answer:
Zinc is reduced.
The oxidation number of chlorine does not change.
Aluminum is oxidized.
Explanation:
For the reaction:2AI(s) + 3ZnCI₂(g) → 3Zn(s) + 2AICI₃(aq).
For the elements in the reactants side:
Al has (0) oxidation state and converted to (+3) oxidation state in the products (AlCl₃), which means Al is oxidized and it is the reducing agent.
So, we can check that: Aluminum is oxidized.
Zn has the oxidation state (+2) in the reactants side (ZnCl₂) and converted to (0) in the products side (Zn), which means that Zn is reduced and it is the oxidizing agent.
So, we can check that: Zinc is reduced.
and can not check: Zinc is the reducing agent.
The oxidation state of Cl does not change, it is the same in both sides (-1).
So, we can check: The oxidation number of chlorine does not change.
and can not check: Aluminum atoms transfer electrons to chlorine atoms.
So, the choices will be:
Zinc is reduced.
The oxidation number of chlorine does not change.
Aluminum is oxidized.
Answer: B, D,E
Explanation: