For this question we can use the formula provided from Charles's Law, which is:
V1/T1 = V2/T2
We have:
V1 = 10 Liters
T1 = 200 K
V2 = 20 L
T2 = ?
Now we add the values to the formula:
10/200 = 20/T2
0.05 = 20/T2
T2 = 400 K
Raising the temperature of 10.0 g of water from 10.0°C to 20.0°C requires 418 J, while that increasing 10.0 g of aluminum from 10.0°C to 20.0°C requires 89.7 J. The reason why water requires more heat is because___________.A. water is a liquid and aluminum is a solid. B. 10.0 g of water occupies a larger volume than 10.0 g of aluminum. C. Water has a higher specific heat than aluminum. D. water has higher potential energy than aluminum.
Answer
C. Water has a higher specific heat than aluminum.
Explanation
Increasing of kinetic energy means the intermolecular attraction decreases. For water between any two molecule, there are strong H-bond (hydrogen bond). So, to overcome their bond energy we need more amount of heat than another substance. So water has a high specific heat capacity.
how are muscles able to keep making energy even when no food is eaten and glucose levels are low?
Although lipids hold the majority of the body's energy reserves, glycogen is the body's primary energy source.
Glucose is a polymer that makes up glycogen. Our body's primary source of energy is carbs. The remaining glucose in the body is turned into glycogen and stored in various places, but the majority of our body's energy reserves are found in fats, which are kept in the form of lipids.
Where does the energy come from in the muscles?
The chemical energy that is stored in our meals is used by muscles to produce heat and motion energy (kinetic energy). Energy is necessary for maintaining body temperature, promoting physical activity, and enabling tissue growth and repair. Foods high in protein, fat, and carbohydrates provide energy.
What Takes Place to Muscles in the Absence of Glucose?
Your body converts carbs, such as those found in bread or fruit, into glucose after consumption. Glycogen is the form of glucose that is stored in your muscles and liver and is used for energy when you are not eating or while you are exercising.
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A 8.67 g sample of an unknown salt (MM= 116.82 g/mol) is dissolved in 150.00 g water in a coffee cup calorimeter. Before placing the sample in the water the temperature of the salt and water is 23.72 °C. After the salt has completely dissolved the temperature of the solution is 28.54 °C.
What is the total mass inside the calorimeter in grams?
Was the dissolution process endothermic or exothermic?
a)The total mass of the solution is 158.67 g
b)Owing to the fact that the temperature rose thus it dissolved exothermically.
What is the heat evolved?Let us recall that an endothermic reaction is one in which heat is absorbed while the exothermic reaction is one in which heat is evolved.
Number of moles of the substance = 8.67 g/116.82 g/mol = 0.074 moles
Temperature change inside the calorimeter = 28.54 °C - 23.72 °C = 4.82°C
Let us recall that the total mass in the calorimeter is the mass the solute and that of the solvent. Hence the total mass can be given as; 8.67 g + 150.00 g = 158.67 g
The dissolution process is exothermic.
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The chemical reaction that you will model is shown below. Calcium oxide (CaO) is a white
solid with a crystalline structure. It is made by heating limestone, coral, seashells, or chalk,
which are composed mainly of calcium carbonate (CaCO3). During the heating process,
carbon dioxide (CO2) is released and calcium oxide (CaO) is produced. Commercially,
calcium oxide is called lime. One of the oldest uses of lime is to make mortar, a substance
used in construction to secure bricks, stones, and blocks together.
CaCO3 → CaO + CO2
Calcium carbonate is made by passing carbon dioxide through slaked lime or calcium oxide CaO. Mainly eggshells, sedimentary rocks and minerals, seashells etc. are composed of calcium carbonate, CaCO₃.
What is calcium carbonate?Calcium carbonate is an inorganic compound made by passing carbon dioxide gas through slaked lime or calcium oxide. This reaction is an example of combination reaction.
Calcium carbonate can be easily decomposed into its constituents carbon dioxide and and calcium oxide. The decomposition of calcium carbonate is an exothermic reaction thus heat is evolved to the surrounding.
Rocks and minerals are mainly made of calcium deposits. Calcium carbonate is mainly found in minerals, sedimentary rocks, eggshells, seashell etc.
Therefore the materials which are composed of calcium carbonate are, minerals, eggshells, seashells etc.
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the pH of a 0.010 M HOBr solution is 5.3
a. what is [H+] in that solution?
b. what is [OBr-]? What is [HOBr]? (where do the H+ and OBr- ions come from)?
c. what is the value of Ka for HOBr? What is the value of pKa?
The [H⁺] of the solution is 5.01 * 10⁶ M
The [OBr⁻] of the solution is 5.01 * 10⁶ M
The [HOBr] of the solution is 0.01 M
The H⁺ and OBr⁻ ions come from the dissociation of the weak acid HOBr.
The value of Ka is 2.51 * 10⁻⁹
The value of pKa is 5.6
What is the pH of a solution?The pH of a solution is the negative logarithm of the hydrogen ion concentration of a solution.
pH = - log [H⁺]
From the given data:
pH of the solution = 5.3
solving for [H⁺];
[tex][H^{+}] = 10^{-pH}[/tex]
[tex][H^{+}] = 10^{-5.3}[/tex]
[H⁺] = 5.01 * 10⁶ M
The equation of the dissociation of the weak acid, HOBr is given below:
HOBr (aq) ⇄ H⁺ (aq) + OBr⁻ (aq)
Moles of H⁺ (aq) = OBr⁻ (aq)
Therefore, [H⁺] = [OBr⁻]
[OBr⁻] = 5.01 * 10⁶ M
The acid dissociation constant, Ka, is calculated as follows:
Ka = [H⁺] * [OBr⁻] / [HOBr]
where [HOBr] = concentration of the weak acid, HOBr.
At equilibrium [HOBr] >>> [H⁺] and [OBr⁻]
[HOBr] = 0.010 M
Ka = (5.01 * 10⁶ M * 5.01 * 10⁶ M) / 0.010 M
Ka = 2.51 * 10⁻⁹
pKa = - log (Ka)
pKa = - log (2.51 * 10⁻⁹)
pKa = 5.6
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(Please see the question in the image) All coefficients that are number two are wrong answers and need to be replaced.
The balanced equation is:
[tex]2\text{NaN}_{3_{}\text{ }}\text{ }\rightarrow3N_2\text{ + 2Na}[/tex]The equation is balanced because we have the same amount of elements in the reactants side (to the left of the arrow) and in the products side (to the right of the arrow).
PLEASE HURRY ASAP
The image below shows a certain type of global wind:
The Earth is shown as a circle. Equator is shown and labeled at 0 degrees. 30 degrees north and south latitudes are shown and labeled. 60 degrees north and south latitudes are shown and labeled. Curved arrows are shown pointing from the top and bottom ends of the circle towards 60 degrees north and s
What best describes these winds?
Polar easterlies caused due to sinking, cool air above the poles
Polar easterlies caused due to rising, warm air above the poles
Trade winds caused due to sinking, cool air above the equator
Trade winds caused due to rising warm air above the equator
Answer:
Polar easterlies caused due to sinking, cool air above the poles
Explanation:
I hope this helps! If it does would you please mark me brainliest?
Forming a chemical bond ____.
The ability to build molecules is made possible by a chemical bond, which is a strong attraction between atoms, ions, or molecules. The bond may be created by the sharing of electrons in covalent bonds or by the electrostatic interaction between ions that have opposing charges.
Chemical bonds keep the atoms in molecules together. Electrostatic forces between negatively charged electrons and positively charged atomic nuclei produce bonds (the positions of which in space are determined by quantum mechanics).
The three basic types of bonds are metallic, ionic, and covalent.
Definition: Valence electrons are moved from one atom to the next to finish the outer electron shell, creating an ionic bond. Example: NaCl is a typical ionically bonded substance (Salt)
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The partial pressure of oxygen gas in our atmosphere is approximately
pressure is 1 atm.
(Our atmosphere is about 20% O2.)
20 torr
40 torr
780 torr
152 torr
760 torr
The partial pressure of oxygen gas in our atmosphere is approximately pressure is 152 torr.
The above problem is solved by using the concept of mole fraction.
As we know that,
Mole fraction = Moles of gas/ Total number of moles
In our atmosphere Oxygen is about 20%. So we can say that mole fraction is 0.2.
So,
0.2 = Partial pressure of gas / Total pressure
As we know that the pressure of atmosphere is 1 atm or in terms of torr it is 749.
By substituting all the values, we get
0.2 = partial pressure of gas/ 749
Partial pressure of gas = 749 × 0.2 = 149.8 torr
which is approximately 152 torr.
Thus, we concluded that the partial pressure of oxygen gas in our atmosphere is approximately
pressure is 152 torr.
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What is the mass in grams of 6.75×10^15 molecules of NO2
Answer:
1.227 x 10^-6
Explanation:
1 mole= 6.022 x 10^23 atoms
What is the theoretical yield of ammonia if 1.0 g N2 and 1.5g H2 reacted? N2(g)+ 3H2(g) 2NH3(g) ΔG = -9.9 kJ/mol
The theoretical yield of NH₃ based on the equation of the reaction is 1.82 g.
What is the theoretical yield of a substance?The theoretical yield of a substance is the amount of a substance that can be produced from the limiting reactants based on the equation of the reaction.
The equation of the reaction is given below:
N₂(g )+ 3 H₂ (g) ---> 2 NH₃ (g) ΔG = -9.9 kJ/mol
Moles of N₂ = 1 / 28
moles of N₂ = 0.0357 moles
Moles of H₂ = 1.5 / 2
Moles of H₂ = 0.75 moles
The limiting reactant is N₂
Mole ratio of N₂ and NH₃ is 1 : 3
Theoretical yield of NH₃ = 0.0357 * 3 * 17
Theoretical yield of NH₃ = 1.82 g
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how does elemt's atomic mass differ from its mass number?
Answer:
Mass number is a whole number because it is the sum of number of proton and number of neutrons whereas atomic mass is fractional because it is the average relative mass of its atoms as compared with mass an atom of C-12 isotope taken as 12.
hope it helps you
you are setting up a dideoxysequencing reaction. what is the correct ratio of dntps (deoxyribonucleotides) to ddntps (dideoxyribonucletides)?
Correct ratio of dntps (deoxyribonucleotides) to ddntps (dideoxyribonucletides) is Adding more dNTPs than ddNTPs
The triphosphates of nucleosides that contain deoxyribose are known as deoxynucleotide triphosphates (dNTPs). They lose two phosphate groups as they are integrated into DNA during replication, making them the fundamental units of DNA. When a DNA primer is hybridized to a complementary DNA template, DNA polymerases expand the hybrid by using dNTPs. The developing strand's 3′-hydroxyl terminus and the entering dNTP's -phosphate produce a phosphodiester link as the proper dNTP is integrated into it. A DNA molecule is made up of nucleotides called dNTPs. The Sanger sequencing process makes use of nucleotides called ddNTPs. Structure. is made comprised of a 3'OH group in the deoxyribose sugar. During PCR, the DNA polymerase first elongates the sequencing primer, which then hybridizes the PCR products.
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Would Krypton (Kr), normally be expected to react and form compounds?
A Yes, because Krypton has 7 valence electrons, and a high electronegativity.
B No, because Krypton has 8 valence electrons, and no electronegativity.
C No, because Krypton has 8 valence electrons, and no ionization energy.
D Yes, because Krypton has 7 valence electrons, and a high ionization energy.
B No, because Krypton has 8 valence electrons, and no electronegativity.
Other than fluorine gas, nothing else reacts with it. Commercially, krypton is used as the refueling gas for fluorescent lights. Some flash lights used in high-speed photography also make use of it.
Why does krypton not react?
This is due to the fact that Krypton's fourth energy level valence electrons are more thoroughly shielded by inner electrons than those of the lighter noble gases.
Krypton (Kr) is a chemical element that is a rare gas belonging to Periodic Table Group 18 (noble gases). It only forms a small number of chemical compounds. Krypton is monoatomic, colorless, odorless, and about three times heavier than air.
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1. Perform a unit conversion to convert 22 gallons to mL using the following conversion factors:
1 gal = 128 oz
1 fl oz = 29.6 mL
(note, this should be to two significant figures because 22 is two significant figures)
2. Calulate the density of a pice of wood that is 1.05 kg and has a volume of 1,782 mL. Report your answer to three significant figures in g/mL. (note 1,000 g is exactly 1 kg)
The 22 gallons is equal to 83353.6 ml.
The conversion technique is the technique of converting a business's accounting from unmarried access to double entry.
Calculation:-
1 gal = 128 oz
1 fl oz = 29.6 mL
22 gallons = 128 × 22
= 2816 0z
1 fl oz = 29.6 mL
2816 0z = 29.6 × 2816 ml
= 83353.6 ml
A unit conversion expresses the equal property as a unique unit of dimension. as an instance, time may be expressed in mins in preference to hours, at the same time as the distance may be transformed from miles to kilometers, or ft, or every other measure of period.
Conversion price receives its call due to the fact the prices that make up conversion fees are all of the costs incurred to transform uncooked fabric into a completed top. these fees are direct labor and manufacturing overhead.
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Hydrogen emits light with a wavelength of 410 nm. Find the frequency of this light. Find the energy contained by a single photon of this light in kJ.
The energy contained by a single photon of this light is 4.84 x[tex]10^{-22}[/tex] J.
λ = 410 nm
V= C/r
Where, V = frequency
C = speed of light
r = wavelength
also 1 nm =[tex]10^{-9}[/tex] m
410nm = 410 x [tex]10^{-9}[/tex]m
V = 3x[tex]10^{8}[/tex]/ 410x[tex]10^{-9}[/tex] = 7.31×[tex]10^{14}[/tex] Hz
E = hc/λ
where h-Planck's constant 6.626x[tex]10^{-34}[/tex] J-S
E = 6.626x[tex]10^{-34}[/tex]X 3X[tex]10^{8}[/tex]
As all values. must be placed in s1 units
410 x10-9
E = Energy 4.84 x[tex]10^{-19}[/tex] Joules.
The light emitted by hydrogen atoms is red because of its four characteristic lines. The strongest line in that spectrum is at 656 nm, the red part of the visible spectrum, and is the number of waves passing through a fixed point per unit of time. Also, the number of cycles or oscillations per unit of time experienced by an object in periodic motion. When you pass an electric current through a tube of hydrogen gas, the electrons of the hydrogen atoms absorb energy and jump to a higher energy level. When these electrons drop to a lower energy level, they emit light.
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Water's strong hydrogen bonds result in which physical properties? Check all that apply.
high boiling point
low boiling point
high specific heat
low specific heat
density of ice being less than that of liquid water
density of ice being greater than that of liquid water
determine which reaction will occur.
1) 2Li(s) + Mg2+ = 2Li+ + Mg(s)
2) Fe(s) + Zn2+ = Fe2+ + Zn(s)
The first reaction 2Li(s) + Mg^2+(aq)---> 2Li^+(aq) + Mg(s) would occur because lithium is above magnesium in the electrochemical series.
Which reaction would occur?We know that the possibility that one metal can be able to displace the other is only brought about by the position of the metals in the electrochemical series.
We know that the metals that are higher in the series are able to displace the metals that are lower in the series from an aqueous solution of the salts of the lower metal. In this case the lithium metal is above the magnesium metal so it can be able to displace it from solution.
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If you have 15.0 g of Na, how many grams of O2 are required for the reactionSodium reacts with oxygen to produce sodium oxide.4Na(s)+O2(g)→2Na2O(s)
Firstly we convert the mass of Na to moles of Na:
[tex]\begin{gathered} _nNa_{(s)}=\frac{mass}{molar\text{ }mass} \\ _nNa_{(s)}=\frac{15.0g}{14\text{ }gmol^{-1}} \\ _nNa_{(s)}=1.07\text{ }mole \end{gathered}[/tex]Based on the mole ratio 4 moles of Na reacts with 1 mole of O2. Therefore 1.07 mole of Na would react with x mole of oxygen gas. We determine x by:
[tex]\begin{gathered} _nO_{2(g)}=1.07\text{ }mole\div4 \\ _nO_{2(g)}=0.27\text{ }mole \end{gathered}[/tex]We will now convert 0.27mol of oxygen gas to mass of oxygen gas:
[tex]\begin{gathered} mass=mole\times molar\text{ }mass \\ mass=0.27\times32\text{ }gmol^{-1} \\ mass=8.64g \end{gathered}[/tex]Mass of O2 is 8.64g
The correct number of significant figures for the following set of numbers; 1.200, 0.00340, 55000, 80.080 would be
Responses
2, 3, 5, 5
2, 3, 5, 5
4, 5, 2, 4
4, 5, 2, 4
2, 6, 5, 5
2, 6, 5, 5
4, 3, 2, 5
4,3,2,5
Explanation:
All zero placed to the right of a decimal point in a number are significant.
1.200 = two significant figures
The zero written to the left of the first non-zero digits in a number are not significant.
0.00340 = three significant figures.
The zero written without digits and after non-zero digits are not significant.
55000 = two significant figures.
The zero between two non-zero digits in a number are significant.
80.080 = five significant figures.
Learning task 1 identify the reactant needed in the following chemical equation1. ___ + ___ = Mg(OH)22. ___ + ___ = NaCl3. ___ + ___ = H2SO44. ___ + ___ = Al(PO4)35. ___ + ___ = SO2
Number 1
The complete reaction:
[tex]MgO\text{ + H}_2O\text{ = Mg\lparen OH\rparen}_2[/tex]Magnesium oxide + water
MgO + H2O = Mg(OH)2
------------------
Number 2
The reaction:
[tex]2Na\text{ + Cl}_2\text{ = 2NaCl}[/tex]2 Na + Cl2 = 2 NaCl
------------------
Number 3
The reaction:
[tex]SO_3\text{ + H}_2O\text{ = H}_2SO_4[/tex]-----------------
Number 4
[tex]Al\text{ + PO}_4=\text{ Al\lparen PO}_4)_3[/tex]----------------
Number 5
[tex]S\text{ +O}_2=\text{ SO}_2[/tex]PLEASE ANSWER I AM BEGGING
How many milliliters of a stock solution of 7.00 M HNO3 would you have to use to prepare 0.120 L of 0.480 M HNO3 ? If you dilute 20.0 mL of the stock solution to a final volume of 0.270 L , what will be the concentration of the diluted solution?
Taking into account the definition of dilution:
you have to use 8.23 mL of a stock solution of 7.00 M HNO₃ to prepare 0.120 L of 0.480 M HNO₃.If you dilute 20.0 mL of the stock solution to a final volume of 0.270 L , the concentration of the diluted solution is 0.518 M.DilutionDilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeVolume of stock solutionIn this case, you know:
Ci= 7 MVi= ?Cf= 0.480 MVf= 0.120 LReplacing in the definition of dilution:
7 M× Vi= 0.480 M× 0.120 L
Solving:
Vi= (0.480 M× 0.120 L)÷ 7 M
Vi= 0.00823 L= 8.23 mL (being 1 L= 1000 mL)
Finally, you will need 8.23 mL of the stock solution.
Concentration of the diluted solutionIn this case, you know:
Ci= 7 M assuming the stock solution is 7.00 M HNO₃Vi= 20 mL= 0.02 LCf= ?Vf= 0.270 LReplacing in the definition of dilution:
7 M× 0.02 L= Cf× 0.270 L
Solving:
(7 M× 0.02 L)÷ 0.270 L= Cf
0.518 M= Cf
Finally, the concentration is 0.518 M.
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If we had 175.5 liters of argon, how many moles would this be?
The number of moles of argon = 7.835moles
Appropriate ratio = 1mole/22.4L
Explanations:To get the number of moles of argon, we will use the conversion rate as shown:
1 mole = 22.4 L
Convert 175.5 liters of argon to moles
[tex]\begin{gathered} moles\text{ of argon}=175.5\cancel{L}\times\frac{1mole}{22.4\cancel{L}} \\ moles\text{ of argon=}\frac{175.5}{22.4}mole \\ mole\text{ of argon}=7.835moles \end{gathered}[/tex]The equivalent number of moles of 175.5 liters of argon is 7.835 moles and the appropriate ratio is 1/22.4L
Which of the following would be most likely to happen if DNA and RNA remained in the nucleus of
the cell?
O RNA polymerase would link nitrogen bases to DNA but not RNA.
O Transcription could not take place.
O DNA functioning would remain the same, but RNA would not be able to make proteins.
O Both DNA and RNA would be double-stranded.
Cells read out or express the genetic instructions in their genes through transcription and translation.
RNA Is Produced by the Transcription of Parts of DNAA cell first copies a specific region of its DNA nucleotide sequence a gene into an RNA nucleotide sequence before reading out a necessary component of its genetic instructions.Despite being replicated into a different chemical form, the information in RNA is still expressed using a nucleotide sequence, which is effectively the same language as DNA. Therefore, transcription.Additionally, as we will see in the following chapter, a cell may modify (or regulate) the expression of each of its genes depending on the circumstances, most obviously by managing the RNA it produces.To Learn more About Cell, Refer:
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which of the following is a factor that reduces the required number of kWh for heating
The factor that can reduce the required number of kWh for heating is the lower use of the electrical equipment that is option C.
What is electrical power?The electrical power is defined as the amount of energy that a device is capable of transfering per unit time.
The electrical power is usually measured in kilowatts per hour. That is KWh.
To determine the total amount of power consumed by an electrical device is to multiple the power use (in kilowatts, kW) by the number of hours during which the power is consumed.
But when there is reduction in the use of the electrical device, the amount of power consumed reduces.
Therefore, to reduce the amount of required number of power consumed (kWh) for heating, the number of times the electrical device is being used should be reduced.
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which of the following substances is insolube in water
Answer:
Of the given options; vinegar, salt and sugar completely dissolve in water. However, when sawdust is mixed with water it floats on top indicating it is insoluble in water.
How many SF does this number have: 0.88400
Answer:
The number 0.88400 has 3 significant figures.
Explanation:
The number 0.88400 has 3 significant figures because, zeros to the left of the first significant figure is not significant, and only for numbers greater that 1, the zeros to the right of the decimal point are significant.
Is telephone a matter
Answer:
yes any physical substance is matter, solid liquid and gas and a telephone is a solid
Explanation:
What is Kc at 800K? (The question is in the photo)
ANSWER
The value of Kc at 800K for the above reaction is 1.1642454865
EXPLANATION
Given that;
[tex]\text{ CO}_{(g)}\text{ + H}_2O_{(g)}\rightleftarrows\text{ CO}_{2(g)}\text{ + H}_{2(g)}[/tex]The number of moles of CO = 1 mol
The number of moles of H2O = 1 mol
The number of moles of CO2 = 0.519 mol
The volume of the vessel = 11L
To find the value of Kc, follow the steps below
Step 1: Write the equilibrium for the given reaction
[tex]\begin{gathered} \text{ K}_c\text{ = }\frac{[products]}{[reactants]} \\ \text{ } \\ \text{ K}_c\text{ = }\frac{[CO_2]\times[H_2]}{[CO]\times[H_2O]} \end{gathered}[/tex]Recall, that at equilibrium the mole of CO2 is 0.519 mol
Step 2: Find the mole of each reactant at equilibrium using the stoichiometry ratio
In the above reaction, 1 mole of CO reacts with 1 mole of H2O to give 1 mole of CO2 and 1 mole of H2
Let the number of moles of CO be x
[tex]\begin{gathered} \text{ 1 mol CO }\rightarrow\text{ 1 mol CO}_2 \\ \text{ x mol CO }\rightarrow\text{ 0.519 CO}_2 \\ \text{ cross multiply} \\ \text{ x}\times\text{ 1 = 0.519} \\ \text{ x = 0.519 mol} \end{gathered}[/tex]The number of moles of CO is 0.519 mol
The next step is to find the number of moles of CO at equilibrium
At equilibrium, the number of mol of CO is calculated below
The number of moles of CO at equilibrium = 1 - 0.519
The number of moles of CO at equilibrium = 0.481 mol
Using stoichiometry ratio, the number of mole o water at equilibrium will also be 0.481 mol
Also, the number of moles of hydrogen at equilibrium is 0.519 mol
Step 3: Find Kc by substituting the calculated values into the formula
[tex]\begin{gathered} \text{ K}_c\text{ at 800K = }\frac{0.519\times0.519}{0.481\times0.41} \\ \\ \text{ K}_C\text{ at 800K = }\frac{0.269361}{0.231361} \\ \text{ Kc at 800K = 1.1642454865} \end{gathered}[/tex]Given this equation: 3 MgCl2 + 2 Al → 3 Mg + 2 AlCl3, if 2.3 moles of magnesium chloride reacted how many moles of aluminum chloride are produced?
ANSWER
The number of moles of aluminum chloride is 1.533 moles
STEP-BY-STEP EXPLANATION:
Given information
Number of moles of Magnesium chloride = 2.3 moles
The next thing is to write the balanced equation of the reaction
[tex]3MgCl_2\text{ + 2Al }\rightarrow3Mg+2AlCl_3[/tex]From the balanced chemical reaction equation, you will see that 3 moles of Magnesium chloride react with 2 moles of aluminum to produce 3 moles of magnesium and 2 moles of aluminum chloride.
The next step is to find the number of moles of aluminum chloride in the reaction using a stoichiometry ratio.
Let x represents the number of moles of aluminum chloride
From the chemical reaction equation,
3 moles of magnesium chloride give 2 moles of aluminum chloride
2. 3 moles of magnesium will give x moles of aluminum chloride
The above statement can be translated below as
[tex]\begin{gathered} 3\text{ }\rightarrow\text{ 2} \\ 2.3\text{ }\rightarrow\text{ x} \\ \text{Cross multiply} \\ 3\cdot\text{ x = 2 }\cdot\text{ 2.3} \\ 3x\text{ = 4.6} \\ \text{Divide both sides by 3} \\ \frac{3x}{3}\text{ = }\frac{4.6}{3} \\ x\text{ = 1.5333 moles} \end{gathered}[/tex]Since x represents the number of moles of aluminum chloride, therefore, the number of moles of aluminum chloride is 1.533 moles
