Answer: The correct answer (based on the ratio provided) is the mass of H₂ produced equals 3.51 g of H₂
Explanation:
The equation of the reaction:
2AI + 6HCI → 2AICI₃ + 3H₂
Based on the equation 2 * 27g of Al will produce 3 * 2g of H₂
As a result, 32.25g of Al will produce: 6/55 * 32.25g of H₂
The mass of H₂ produced is therefore 3.51g of H₂
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Rocks formed by the process
of erosion, deposition, and
compaction of sediments
are called?
Rocks formed by the process of erosion, deposition, and compaction of sediments are called Sedimentary Rocks.
The three main types of rocks are Igneous, Sedimentary, and metamorphic rocks. They are formed on or near the Earth’s surface from the compression of ocean sediments or other processes.
Igneous rocks are formed when hot, molten rock crystallizes and solidifies after cooling down. When these rocks are weathered due to the process of erosion, deposition, and compaction of sediments they turn into Sedimentary rocks. These types of rocks generally consist of fossils. When the sedimentary rocks are subjected to tremendous temperature and pressure they get converted into metamorphic rocks. The metamorphic rocks when get ejected out of the volcano in the form of hot magma turn into igneous rocks on cooling. This cycle of rocks continues.
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What can we measure with the
SI unit, the mole?
A. temperature
B. mass
C. amount of substance
D. length
The amount of substance is measured with the SI unit, the mole.
What is Mole?Mole is the ratio of the given mass of substance to the molar mass of that substance.
Or it is the ratio of the number of molecules of substance to the Avogadro number.
Mathematically, it can be written as
Mole = given mass / molar mass
Or Mole = number of molecules / Avogadro number.
For first case,
Temperature is measured with the SI unit, the celsius. So, this is incorrect option.
For second case,
As we know that, mass is measured with the SI unit, the gram. So, this is also incorrect option.
For fourth case,
Length is measured with the SI unit, the metre. So, this is also incorrect option.
Therefore, option C is the correct option.
Thus, we concluded that the amount of substance is measured with the SI unit, the mole.
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What quantity in moles of chlorine gas at 120.0 °C and 33.3 atm would
occupy a vessel of 36.5 L?
The number of chlorine moles present in the vessel are 37.67 mol.
What are moles?
Moles are the number of substances present in a system which consists of entities like ions, atoms, or molecules as much as atoms in the weight of pure carbon which is 12 grams. It is the SI unit of amount of substance.
One mole of a substance is equal to the Avogadro Number which is equal to 6.022×10²³.
According to Ideal gas law,
PV=nRT where,
P= Pressure
V= Volume
n= number of moles
R= Ideal gas constant
T= temperature (in Kelvin)
n= PV/RT
⇒33.3×36.5/0.0821×393
⇒1215.45/32.2653
⇒37.670
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what is the general trend in atomic size within a group across a period
According to electronic configuration , atomic size within a period decreases from left to right as electrons are added to same shell while in group it increases as new shell is added in each successive element in group.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
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What are some things you do to help you learn and remember new words and what they mean?
The following are some things you do to help you learn and remember new words and they mean:-
Learn in chunks and scripts.Visualize what the word or phrase looks like.Reading is one of the only methods to teach vocabulary and normal learning is the approach that gives college students the possibility to exercise and grasp the stages of crucial reading that result in studying success and progressed word utilization.
One of the maximum impactful mastering techniques is allotted practice spacing out your analyzing over several brief intervals of time over several days and weeks. The only exercise is to work a quick time on every elegance every day.
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If 0.144 moles of NaCl are dissolved in a 250.0 mL solution, what is the concentration of the NaCl solution?
Taking into account the definition of molarity, the concentration of the NaCl solution is 0.576 moles/L.
Definition of molarityMolarity is a measure of the concentration of a solute that indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
molarity= number of moles of solute÷ volume
Molarity is expressed in units moles/ L.
Concentration of the NaCl solutionIn this case, you know that:
number of moles of solute= 0.144 molesvolume= 250 mL= 0.250 LReplacing in the definition of molarity:
molarity= 0.144 moles÷ 0.250 L
Solving:
molarity= 0.576 moles/L
Finally, the molarity in this case is 0.576 moles/L.
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What are 5 examples of polar covalent bonds?
Answer:
Water - H2O.
Ammonia - NH. ...
Sulfur dioxide - SO. ...
Hydrogen sulfide - H2S.
Ethanol - C2H6O.
Explanation:
Answer:
Water - H2O.
Ammonia - NH. ...
Sulfur dioxide - SO. ...
Hydrogen sulfide - H2S.
Ethanol - C2H6O.
10x-74=92
answer for algebra
10x - 74 = 92 ---> (Add 74 to both sides. This gets rid of the 74)
+ 74 +74
10x = 166 ---> (Simplify. The 74 you added to the 92 becomes 166)
10x/10 = 166/10 ---> (Divide both sides by 10. This gets the x by itself)
v(Simplify)v
x = 83/5 OR x = 16.6
Post-Lab Problem 2 (5 points). 20 L of HCl(g) with density of 0.7292 were dissolved
in 2.0 L of water. Then 20 mL of that solution were titrated to the end point by 10 mL of
NaOH(aq). What was the molar concentration of NaOH? Assume that HCl(9) does not change
the volume of water when dissolved in it. Enter your answers in the boxes provided with correct units and
sig. figs.:
Answer:
The molar concentration
of sodium hydroxide is ): СNaOH =
The molar concentration of NaOH can find out from the molarity of the titrant HCl. The molarity of NaOH is found to be 0.038 molar.
What is molarity?
Molarity is the number of moles of solute per volume of solution in liters. Here, the HCl has the density of 0.7292 g/l and volume 20L . Its mass is calculated as:
mass = density × volume
= 0.7292× 20L
= 14.58.
The molar mass of HCl is 37.5. Thus its number of moles in the solution is 14.58/37.5 = 0.388.
At the end point the number of moles of NaOH and HCl will be equal thus, where the volume of the NaOH solution is 10 ml. Now the molarity can be find out as follows:
molarity = number of moles /volume
= 0.388/10 = 0.038 M.
Hence, the molarity of HCl is 0.038 M.
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What is the molarity of a solution containing 150 mL of a 3.25 M sodium hydroxide
(Na0H) solution after we add 275 mL more water?
The molarity of a solution containing 150 mL of a 3.25 M sodium hydroxide ( NaOH ) solution after we add 275 mL more water is 1.14 M
Given that :
molarity of solution M1 = 3.25 M
volume of solution V1 = 150 mL
Molarity of solution M2 = ?
Volume of solution after dilution V2 = 150 mL + 275 mL = 425 mL
using the dilution law , we get :
M1 V1 = M2 V2
M2 = (M1 V1) / V2
M2 = ( 3.25 × 150 ) / 425
M2 = 1.14 M
Thus, The molarity of a solution containing 150 mL of a 3.25 M sodium hydroxide ( NaOH ) solution after we add 275 mL more water is 1.14 M
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Consider two mixtures of gases available for use to fill a tire. One has the same composition as air (Gas 1: 20% O2, 80% N₂) and
another has added carbon dioxide (Gas 2: 15% O₂, 80% N₂, 5% CO₂). Compare the partial pressure of nitrogen gas in a 2L sample of
Gas 1 at sea level (1 atm) to the partial pressure of nitrogen gas in a 2L sample of Gas 2 at sea level. Explain your answer.
The partial pressure of an individual gas from a certain mixture of gas can be determined by its mole fraction and total pressure.
Total pressure of both mixtures are same so there partial pressure must be determined from its mole fraction. Mole fraction is defined as the number of molecules of a particular component in a mixture divided by the total number of moles in the given mixture.
Mole fraction (X):
X(solute) = (Moles of solute) / Total moles of solution
X(solvent) = (Moles of solvent) / Total moles of solution
∵ X(solute) + X(solvent) = 1
Hence, the partial pressures of the individual gases of gas-1 and gas-2 can be determined from its mole fraction.
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5. The air inside a beach ball is at a temperature of 25°C and a pressure of 1 atm. If the ball
contains 0.85 mol of air, what is its volume?
The volume of the given ball is 21 L.
Pressure = 1.0 atm
no. of moles = 0.85 mol
Temperature = 25°C = (25+273) K = 298 K.
we will use the ideal gas equation,
PV = nRT
where,
P = pressure
V = volume
n = no. of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Let's substitute the values into the above formula,
1.0 x V = 0.85 x 0.0821 x 298
V = 20.7 [tex]\approx[/tex] 21 L.
Thus, the volume of the ball is 21 L.
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A student collected a sample of a gas in a 165 mL gas bulb until it’s pressure was 765 mm Hg at a temperature of 27.0 Degrees C. If the sample had a mass of 0.452 g, what is the molar mass of the gas?
The molar mass of the given gas is equal to 68.48 g.
What is the ideal gas equation?The ideal gas law can be described as an equation of the state of a hypothetical perfect gas. This equation can be represented as the product of the volume and pressure of one-mole perfect gas is equal to the product of the universal gas constant and absolute temperature of that gas.
The mathematically, ideal gas equation can be written as follows:
PV = nRT
Where n is the moles of gas, P is the pressure, V is the volume of the gas, and R is the gas constant.
Given, the volume of collected gas, V = 165 ml = 0.165 L
The temperature of the gas, T = 27° C = 273 + 27 = 300 K,
The pressure of gas, P = 765 mmHg = 0.99 atm
The value of the gas constant, R = 0.082 atm L /K mol
Substituting the values V, R, P, and T in the equation, we get:
The number of moles of the gas, n = PV/RT
n = 0.99 ×0.165/(0.082 × 300)
n = 0.0066 mol
The molar mass of the gas = 0.452/ 0.0066 =68.48 g/mol
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One mole of an ideal gas is expanded from a volume of 1.00 liter to a volume of 8.93 liters against a constant external pressure of 1.00 atm. How mush work (in joules) is performed on the surroundings?
W = Pexternal(ΔV),W = (1 atm) 8.93 L - 1 L)(101.3 J/1 L·atm)= 803.309J. W. Work, pressure, and volume are directly correlated using a formula. W = Pexextr(V) Consequently, the environmental work is 803.309J. W
How do volume and value work?Market share comes in two flavors: value and volume. The business's overall shares of its total accumulated sector sales serve to define a value market share. On the other hand, a volume market share refers to the precise number of units that an entity markets relative to the total number of units that are sold in the market.
W = quantity of work completed =?
1.00 atm of pressure is P.
1.00 L is the initial volume.
= 8.93 L ultimate volume
W = Pexternal(ΔV),W = (1 atm) 8.93 L - 1 L)(101.3 J/1 L·atm)= 803.309J. W.
How much solid is there?How much room an object occupies is determined by its volume. It is calculated using the quantity of unit cubes required to completely fill the solid. We have 30 unit cubes in the solid after counting the unit cubes, hence the volume is 2 units. 3 units 1 unit equals 30 cubic units
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How much energy is required to completely separate an electron from a proton that is 200 pm away
The energy is required to completely separate an electron from a proton that is 200 pm away is 1.15 × 10⁻¹⁸ J.
the energy expression is given as :
E = K q1 q2 / r
where,
K = 9 × 10⁹ Nm²C⁻²
q1 = charge of proton = 1.6 × 10⁻¹⁹ C
q2 = charge of electron = - 1.6 × 10⁻¹⁹ C
r = distance = 200 × 10⁻¹² m
substituting the values :
E = (9 × 10⁹ × 1.6 × 10⁻¹⁹ × - 1.6 × 10⁻¹⁹ ) / 200 × 10⁻¹²
E = 1.15 × 10⁻¹⁸ J
Thus, The energy is required to completely separate an electron from a proton that is 200 pm away is 1.15 × 10⁻¹⁸ J.
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1. Outline a synthesis showing the necessary reagents and intermediate molecules for the following
transformation. For carbon sources, use alkyl halides with 4 or fewer carbons. You will need to use
more than one reaction.
A synthesis showing the necessary reagents and intermediate molecules for carbon sources, use alkyl halides with 4 or fewer carbons is zinc and copper pair in alcohol to reduced alkyl halide.
Which alkyl halide is more reactive ?The Zn/Cu pair in alcohol is used to reduce alkyl halides. In alcohol, the Zn/Cu pair substitutes hydrogen for the halide of an alkyl halide to generate hydrocarbons. The Zn/Cu combination produces methane in alcohol by taking the iodine out of methyl halide and adding hydrogen.
Thus, a synthesis showing the necessary reagents and intermediate molecules for carbon sources, use alkyl halides with 4 or fewer carbons is zinc and copper pair in alcohol to reduced alkyl halide. Alkyl iodide is more reactive.
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The student claims that the calculated concentration is too high because the filter paper and AgCl(s) precipitate were not fully dry. Do you agree or disagree?
I disagree, the presence of water would decrease rather then increase the concentration of the precipitate.
Would the concentration be too high?We know that the term concentration has to do with the amount of substance that is present in a system. We know that water temds to reduce the concentration of a system. The more the amount water in the system, the less the amount of the substance in the system.
The filter paper is used to weigh the precipitate or the solid product that is obtained in the reaction. We know that the standard practice is that the filter paper ought to be dried and then we can then be able to weigh it and obtain the mass of the substances that was in the solution.
If the filter paper is not fully dry, we would have more amount of water in the system and this would reduce the amount of the AgCl thereby reducing the concentration rather than increase it.
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Name the following alkyl halides
The IUPAC nomenclature of compound 1 is 5-bromo-2-methylchloridepent-2-ene and the name for structure 2 is 5-iodo-hex-2-ene
IUPAC nomenclature is the method of naming the organic chemical compounds by following certain rules and criteria given by IUPAC.
This nomenclature is based on naming a molecules longest chain of carbons connected by single bonds, whether in a continuous or in ring form. Everything else like multiple bonds or atoms are other than carbon and hydrogen are indicated by prefixes or suffixes according to a specific set of priorities.
In structure 1 we can see that we are number so that the double bond that is present gets the least priority and then the naming is done in the alphabetic order. so the name is 5-bromo-2-methylchloridepent-2-ene
In structure 2 the same thing is followed and the name of the structure is
5-iodo-hex-2-ene
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Methane (CH4) is a gas that is found in small quantities in Earth's atmosphere. Which type of bonds does methane have, and why does one carbon
atom bond with four hydrogen atoms? in three to five sentences, explain your answer in terms of valence electrons and electronegativity.
Methane has covalent bonds. Carbon has four valence electrons, so it can bond with four hydrogen atoms, each of which has one valence electron. The carbon atom is more electronegative than the hydrogen atoms, so it attracts the electrons in the bonds more strongly than the hydrogen atoms do.
What is covalent bond ?
A covalent bond consist of the mutual sharing of one or more pairs of electrons between two atoms.
Carbon has four electrons in its valence shell ( it needs four electrons to fill its valence electron ) and Hydrogen have one electrons in its valence shell ( and needs two electrons ) . So Carbon shares total four electrons , one with each Hydrogen and all four Hydrogen shares their one electrons with carbon.
Hence , covalent bonding is present in methane molecule.
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What is the normality of a solution of sulfuric acid (H2SO4) that containing 86 g
per liter of solution?
Normality of a solution of sulfuric acid (H2SO4) that containing 86 g
per liter of solution is 1N
What is normality?The gram equivalent weight of a solute per liter of solution is what is known as a solution's normalcy. The comparable concentration is another name for it. The units of concentration are denoted by the symbols N, eq/L, or meq/L (= 0.001 N). A hydrochloric acid solution's concentration, for instance, could be stated as 0.1 N HCl. The reactive capacity of a specific chemical species is measured by gram equivalent weight or equivalent (ion, molecule, etc.). Utilizing the chemical species' molecular weight and valence, the equivalent value is calculated. The only concentration unit that is reaction-dependent is normality.
g equivalent mass of H2SO4 = 86g
Volume of solution in liter = 1 l
number of g equivalent of H2SO4 = 86/86 = 1
Normality = number of g equivalent/ volume of solution in liter
N = 1 / 1
Normality = 1 N
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How many moles of helium must be added to a balloon currently holding 6.00 moles in order to increase its volume from 125 liters to 175 liters?
Explanation:
V = kn
V1/n1 = V2/n2
V1 = 125ltrs, n1 =6 moles, n2 =?, V2 = 175ltrs
n2 = V2.n1/V1 = (175 × 6) ÷ 125
= 8.4 moles
The helium must be added to a balloon currently holding 6.00 moles in order to increase its volume from 125 liters to 175 liters is 8.4 moles.
What is mole ?The International System of Units uses the mole as the unit of material quantity. How many elementary entities of a certain substance are present in an item or sample is determined by the quantity of that material. It is specified that the mole contains precisely 6.023 × 10⁻²³
An SI unit that connects the microscopic and macroscopic worlds is the mole. It enables researchers to measure vast numbers of extremely tiny objects, such atoms or molecules. Initially, measurements of chemical elements or compounds were expressed in terms of "gram-atom" and "gram-molecule" units.
However, the Latin term moles, which meaning "a mass," is where the word mole ultimately originates, not from German.
v₁ ÷ n₁ = v₂ ÷ n₂
v₁ = 125l,
n₁ =6 moles,
n₂ =?,
v₂ = 175l
n₂ = v₂.n₁ ÷ v₁ = ( 175 × 6 ) ÷ 125
= 8.4 moles
Thus,The helium must be added to a balloon currently holding 6.00 moles in order to increase its volume from 125 liters to 175 liters is 8.4 moles.
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is the molecule shown below chiral or achiral? (ch3)3cch(ch3)2
From the structure of the molecule as shown, the molecule is chiral.
What is a chiral molecule?We say that a molecule is chiral if there is a carbon atom in the molecule that is bonded to four different atoms or groups. In this case, we can say that the molecule is chiral in the sense that is handed and it is able to rotate the plane of polarized light.
Having said that much we can see that there is a carbon atom that is in the compound that is shown that is bond to four different atoms or groups thus it has fulfilled the requirement to say that the molecule is chiral.
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Polar or Nonpolar. identify each picture below as polar or nonpolar
The polar molecules are A and D while the non polar molecules are B C E F.
What are polar molecules?We know that the polar molecules are the molecules that have a structure that is not symmetrical. If a compound is seen to be symmetrical then such a compound can not be a polar molecule. This what we have to look out for in each of the compound.
We would look at a compound as symmetrical if the compound is able to have the same groups that are attached to it in such a way that the attached groups are indistinguishable from each other. If we label the molecules from A to F we can locate the molecules that are polar and non polar.
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A 5.00 mL sample of barium hydroxide is titrated to the phenolphthalein endpoint using hydrochloric
acid. The five mL sample requires 18.02 mL of 0.0873 M HCl solution to reach the endpoint. What is the
concentration of the Ba(OH)2 solution?
A 5.00 mL sample of barium hydroxide is titrated to the phenolphthalein endpoint using hydrochloric acid. The five mL sample requires 18.02 mL of 0.0873 M HCl solution to reach the endpoint. The concentration of Ba(OH)₂ solution is 0.157 M.
The concentration of a compound is defined as the amount of solute dissolved in the solution. It is calculated by the formula
Concentration=moles/volume in L
The reaction between Ba(OH)₂ and HCl is given as
Ba(OH)₂+2HCl→BaCl₂+2H₂O
By using volume and molarity, first we need to calculate moles of HCl. The moles of HCl is calculated using volume and molarity as
Molarity=moles/volume in L
Rearrange the formula for moles
moles=Molarity×volume in L
Convert the given volumes in L
18.02 mL×(1 L/1000 mL)=0.01802 L
5.00 mL×(1 L/1000 mL) = 0.005 L
Hence, moles of HCl will be
moles=(0.0873 mol/L)×0.01802 l
moles=0.001573146 mol
The mol to mol ratio between Ba(OH)₂ and HCl is 1:2. Hence moles of Ba(OH)₂ reacted with HCl is
(0.001573146 mol HCl×1 mol Ba(OH)₂/2 mol HCl)
=0.000786573 mol Ba(OH)₂
Therefore, the molarity of Ba(OH)₂ is
Molarity=(0.000786573 mol/0.005L)
=0.1573146 mol/L
=0.157 M (∵M=mol/L)
Therefore, the molarity of Ba(OH)₂ solution is 0.157 M.
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If the heat of a reaction is measured at constant pressure, it is equal to a change in.
When a reaction's heat is calculated under constant pressure, it equals the enthalpy change. At constant volume or constant pressure, a chemical reaction produces an enthalpy change, which is a heat change.
Enthalpy change indicates how much heat was absorbed or released during the reaction. It is shown by the H. Franklin Electric Sub drive series of constant constant pressure systems, which adjust the pump's speed to suit changing water demand while maintaining constant pressure throughout the system. In sub drive systems, a pressure sensor measures the water pressure, transmits a controller, and controls the pump's speed. Although no work is done when a reaction is conducted in a bomb calorimeter at constant volume, the pressure inside the calorimeter may change.
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Formation of crystals of sugar from a sugary syrup is a …….
chemical change.
Answer:
im pretty sure thats physical
Explanation:
Iron(III) oxide reacts with carbon monoxide according to the equation Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.20 g Fe2O3 and 14.60 g CO.
The complete balanced equation os Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)
First, calculate the number of moles of both reactants as follows:
Moles of Fe2O3 = Amount of Fe2O3 / molar mass
Moles of Fe2O3 =22.00 g / 159.69 g/mol = 0.138 mol
Moles of CO = Amount of CO / molar mass
Moles of CO =14.42 g / 28.01 g/mol = 0.515 mol
Now determine the limiting agent as follows:
The limiting reagent is a substance that limits the amount of product in the reaction. This limiting agent is completely consumed in the reaction.
Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)
0.138 mol Fe2O3 x 3 mol CO / 1 mol Fe2O3 = 0.414 mol CO
Here Fe2O3 is a limiting agent and CO is present in excess. 0.414 mol CO used thus calculate the remaining mol of CO as follows:
0.515 mol CO - 0.414 mol CO = 0.101 mol CO.
Mass of CO = 0.101 mol CO x 28.01 g/mol = 2.83 g CO
2.83 g CO of the excess reactant is left.
Chemical Reaction Types This reaction has a single substitution reaction. Balance strategy Al and Fe are exchanged in this single exchange reaction. Two moles react with 15 moles of oxygen to produce 14 moles of carbon dioxide gas along with 6 moles of water. The most common type of corrosion is uniform corrosion. Here, a uniform oxide layer appears on the surface of the material.
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What is 88 196/480
rounded to the nearest whole number ?
88 is the nearest whole number [tex]88\frac{196}{480}[/tex].
Define the concept of rounding up and down a number.Rounding is a process to estimate a certain number in a context. To determine how to round a number, look at the next digit in the appropriate position; if it is less than 5, round down, and if it is more than 5, round up.
The major figures of a particular number are those key or significant digits that accurately represent the meaning of the number.
[tex]88\frac{196}{480}[/tex] is mixed friction.
Changing the mixed fraction into improper fraction number by :
Multiplying 88 × 480 = 42,240
Adding 196 to this number = 42240 + 196
= 42,436/480
= 88.40
≈ 88
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What is the correct equation in word form
Mg + AgNO3 ---> MgCI2 + Ag
Magnesium plus silver nitrate yields magnesium chloride and silver
Magnesium reacts with silver nitrate forming manganese chloride and silver
Manganese plus gold nitrate yields manganese chloride and gold
Magnesium reacts with silver nitride to form magnesium chloride and silver
Answer:
A
Explanation:
Why would this path of neurons not work to perform a reflex?
Select all that apply.
the motor neuron should be the interneuron
the motor neuron should be the sensory neuron
the sensory neuron should be the interneuron
the interneuron should be the motor neuron
For reflex action the motor neuron that generates the reflex action and pass to the sensory neuron. Interneuron helps to sensory neuron to communicate with motor neurons. Thus in this picture, the motor neuron be the interneuron and interneuron be the motor neuron. Thus option A and D are correct.neuron should be the interneuron.
What is reflex action?Reflex action is generated by our body by the sudden action to for sense of touch or other stimulants. For example, if touch a very hot body, we will take our hand within second and this is resulted by the action of neuron and is called the reflex action.
The movement of hands and legs are controlled by the motor neurons. If we touch any stimulant sensory neurons pass signals to the motor neuron and a signal containing the information of action is returned to the sensory neurons of our hand.
Here, the communication between sensory neuron and motor neuron is facilitated by interneurons. Thus, in this picture the motor neuron be the interneuron and interneuron be the motor neuron. Thus option A and D are correct.
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