It is the simplest whole number ratio of elements in a compound. Molecular formula is n times the empirical formula where n is integers 1,2,... The empirical formula is BH2N.
What is empirical formula?
Empirical formula gives the proportion of the element that is present in a compound. It does not give information about the actual number or the arrangements of the atoms.
n= molecular formula÷ empirical formula
Molecular formula =B[tex]_3[/tex]H[tex]_6[/tex]N[tex]_3[/tex]
Molecular formula = 3×BH2N
Molecular formula =3×empirical formula
Empirical formula = BH2N
Therefore, the empirical formula for this compound B[tex]_3[/tex]H[tex]_6[/tex]N[tex]_3[/tex] is BH2N.
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Convert the following measurement.
2.0 x 10^4 g/mol x L = kg/mol x dL
Answer:
200 (kg / mol) x dL
Explanation:
When 2 moles of
H₂(g) react with
O2(g) to form
H₂O(g) according to the following
equation, 484 kJ of energy are
evolved.
2H2(g) + O2(g) → 2H₂O(g)
Is this reaction endothermic or
exothermic?
exothermic
What is the value of q? _____kj
Is this reaction endothermic or exothermic ?
This reaction is exothermic reaction and the q value is -484 kJ
An exothermic reaction is a chemical reaction that involves the release of energy in the form of heat or light
Here given reaction is
2H2(g) + O2(g) → 2H₂O(g)
In this reaction we can see that heat is released so if heat is released after completion of the reaction such reaction are called as exothermic reaction and thus given reaction is exothermic reaction
The fuel is hydrogen it react with oxygen from the air this is an exothermic reaction
So because of exothermic reaction ΔH = -ve
That why the q value is also negative so it is q = -484 kJ
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Calculate the volume occupied by 35.2 g of methane gas (CH4) at 25°C and 1.0 atm. R = 0.08206 L*atm/Kxmol.
Answer:
53.7 L
Explanation:
The volume occupied by 35.2 g of methane gas at 25 °C and 1.0 atm. is 55.9 L.
Given to us is temperature, pressure, universal gas constant, and mass of methane gas, we need to find the volume occupied by the gas.
To calculate the volume occupied by the methane gas, we can use the ideal gas law equation:
PV = nRT
Where:
P = pressure (in atm)
V = volume (in liters)
n = number of moles
R = ideal gas constant (0.08206 Latm/(Kmol))
T = temperature (in Kelvin)
First, we need to convert the given temperature from Celsius to Kelvin:
T(K) = T(°C) + 273.15
T(K) = 25 °C + 273.15
T(K) = 298.15 K
Next, we calculate the number of moles of methane gas using its molar mass:
molar mass of CH₄ = 12.01 g/mol + 4(1.008 g/mol) = 16.04 g/mol
n = mass/molar mass
n = 35.2 g / 16.04 g/mol
n = 2.19 mol
Now we can substitute the values into the ideal gas law equation:
PV = nRT
V = (nRT) / P
V = (2.19 mol × 0.08206 Latm/(Kmol) ×298.15 K) / 1.0 atm
V = 55.9 L
Therefore, the volume occupied by 35.2 g of methane gas at 25 °C and 1.0 atm is 55.9 liters.
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Which type of joints hold together the bones of the skull?
sutures are nonmoving joints that connect bones of the skull. These joints have serrated edges that lock together with fibers or connective tissue.
Part B
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 15.6 g of carbon were burned in the presence
of 52.1 g of oxygen, 10.5 g of oxygen remained unreacted. What mass of carbon dioxide was produced?
When the Carbon reacts with oxygen it produce CO₂. This can be depicted by the below equation.
C + O₂ → CO₂. By the given process, 57.2 g of CO₂ are produced.
It has been mentioned that when 15.6 g of C reacts with 52.1 g of O₂ , then 10.5 g of O₂ remains unreacted. It indicates that Carbon is the limiting reagent and hence the amount of CO₂ produced is based on the amount of Carbon burnt.
C + O₂ → CO₂
In the given equation , 1 mole of carbon reacts with the 1 mole of O₂ to produce 1 mole of CO₂.
In the case 15.6 g of Carbon reacts with 52.1 of O₂ to produce the "x" g of CO₂.
No of moles of a substance = mass of the substance/molar mass of substance
No of moles of carbon = 15.6 /12= 1.3 moles
No of moles of O₂ = Mass of reacted O₂/Molar mass of O₂.
No of moles of O₂ = (Total mass of O₂ burned - Mass of unreacted O)/32
No of moles of O₂ = (52.1-10.5) ÷ 32 = 1.3 moles.
Hence as already discussed 1 mole of Carbon reacts with 1 mole of O₂ to produce 1 mole of CO₂. In this case 1.2 moles of carbon reacts with 1.3 moles of O₂ to produce 1.3 moles of CO₂.
Moles of carbon dioxide = Mass of CO₂ produced /Molar mass of CO₂
Mass of CO₂ produced(x) = Moles of CO₂ ×Molar mass of CO₂
Mass of CO₂ produced(x) = 1.3 x 44 = 57.2 g
Thus 57.2 g of CO₂ is produced.
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Compare Chlorine and Aluminum atoms shielding effect on their outer electrons.
Chlorine and Aluminum atoms shielding effect on their outer electrons is in chlorine there is 7 electron and in aluminum there is poor shielding effect so the greater size of aluminum
An electron is the s sublevel shied electron present in the p sublevel of the same principal energy level and the electron shielding refer to the blocking of valence shell electron attraction by the nucleus due to the presence of inner shell electron and electron in an s orbital can shielding p electron at the same energy level because of the spherical shape of the s orbital and valence electron are the number of electron present in the outermost shell of an atom and now the last shell of the chlorine atom has 7 electron in it and in aluminum there is poor shielding effect so the greater size of aluminum
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Calculate the concentration (in molarity) of an NaH solution if 25.0 mL of the solution is needed to neutralize 19.7 mL of a 0.463 M HCI solution.
Answer:
0.11 m
Explanation:
H Ci + NaOH H2 O+ NaC1
by titration
0.0025 L of 0.13 mol Na OH = 0.00325 Mol NaOH
L
0.00325 Mol NaOH 1 Mol Hcl/I Mol NaOH = 0.00325 Mol hcl
now 0.00325 mol Hcl/ 0.030 L = 0.0108 M hcl
Which of the following bonds is likely to have the least ionic character?
A. C-F
B. Ca-F
C. N-O
D. Mg-O
C-F bonds is likely to have the least ionic character
Ionic bond type is the linkage formed from the electrostatic attraction between oppositely charged ion in a chemical compound and if the electronegatively differences between two atom is high and there will be a more ionic character to the bond and if the electronegativity differences between the two atom is low and there will be less ionic character to the bond and therefore the smallest electronegativity differences means least ionic character will be found between O-F then C-F and H-f and finally the greatest electronegativity differences will be between Na-F is most
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what is the relationship between the atomic mass of an element and a more of that elements atoms
If the H + concentration is 5.0 x 10 -5 M, what is the pH? What is the pOH?
The pH and pOH of a substance with concentration of 5 × 10-⁵M is 4.30 and 9.70 respectively.
How to calculate pH?pH is a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline.
pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water. pH is an important indicator of water that is changing chemically. pH is reported in "logarithmic units". Each number represents a 10-fold change in the acidity/alkalinity of the water.
The pH of a solution can be calculated by using the following expression:
pH = - log {H}
pH = - log {5 × 10-⁵}
pH = 4.30
pOH is a measure of the hydroxide ion concentration of a solution. As such, it can be used as an indicator of a substance’s alkalinity or even its electrical conductivity in some cases. The pOH is the negative logarithm of the hydroxide ion content and can be calculated by the expression:
pOH = 14 – pH
pOH = 14 - 4.30
pOH = 9.7
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Combining which of the following substances with germanium will cause the germanium to admit free electrons
Answer: In one type of combination, called negative,or N-type,the impurity causes the germanium or silicon to emit free electrons. Arsenic, bismuth, and antimony are suitable impurities for this purpose.
Explanation:
Which of the following equilibrium constants indicates the reaction that gives the greatest amount of reactant? (most reactant favored)
Kc = 5 x 10^-10
Kc = 5 x 10^-1
Kc = 5 x 10^0
Kc = 5 x 10^1
Kc = 5 x 10^10
5 ×10^-10 equilibrium constants indicates the reaction that gives the greatest amount of reactant.
At equilibrium, the forward and reverse reaction rates are equal, resulting in constant concentrations for all of the chemicals. Given that, it seems sense that the ratio of concentration for any given reaction at equilibrium will always keep a constant value.
The ratio of the mathematical product of a reaction's products to that of the concentrations of its reactants is known as the equilibrium constant (Keq). The balanced chemical equation raises each concentration to the power of its corresponding coefficient. K=1 when equilibrium attains. It has no units.
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A chunk of iron at 90.6°C was added to 200.0 g of water at 15.5°C in a coffee cup calorimeter.
Assume that no heat was exchanged with the surroundings. The specific heat of iron is 0.449 J/g°C, and the specific heat of water is 4.18 J/g°C. The temperature of the mixture stabilized at 18.2°C. a) Calculate the heat absorbed by the water
b) Calculate the heat released by the chunk of iron.
c) Calculate the mass of iron added.
The heat absorbed by the water when A\a chunk of iron at 90.6°C was added to 200.0 g of water at 15.5°C in a coffee cup calorimeter is 2257.2 joules and the mass of iron added is 69.44 grams
We know, Heat gained = mass of sample * temperature change * specific heat
thus a) heat gained by water = 200g *(18.2-15.5) °C * 4.18 J/g°C = 2257.2 Joules
also since no heat lost to the surrounding we can say,
b) Heat lost by the chunk of iron = heat gained by water = 2257.2 Joules
or, heat gained by iron = -2257.2 Joules
using the same formula for chunk of iron,
Heat gained = mass of sample * temperature change * specific heat
-2257.2 J = mass of iron * (18.2-90.6)°C * 0.449 J/g°C
mass of iron = 2257.2/( 72.4 * 0.449 ) = 69.44 grams
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In the following reaction;
HCO3- (aq) + H₂O(/)---> CO32- (aq) + H3O+ (aq)
HCO3 is a base and CO32- is its conjugate acid.
H₂O is a base and CO32- is its conjugate acid.
HCO3 is a base and H3O+ is its conjugate acid.
H₂O is a base and H3O* is its conjugate acid.
In the following reaction HCO³⁻(aq) + H₂O(l) →CO₃²⁻ (aq) + H₃O⁺ (aq) is H₂O is a base and CO₃²⁻ is its conjugate acid
Whenever an acid donates a proton and the acid changes into a base and whenever a base accept a proton and an acid is formed an acid and base which differ only by the presence or absence of a proton are called a conjugate acid base pair so in the reaction
HCO³⁻(aq) + H₂O(l) → CO₃²⁻ (aq) + H₃O⁺ (aq)
H₂O is a base and CO₃²⁻ is its conjugate acid
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A solution was prepared by dissolving 34.0 g of KCl in 225 g of water.
Calculate the mole fraction of the ionic species KCl in the solution.
Calculate the molarity of KCl in the solution if the total volume of the solution is 239 mL .
Calculate the molality of KCl in the solution.
1. The mole fraction of the ionic species KCl in the solution is 0.035
2. The molarity of the KCl solution is 1.908 M
3. The molality of the KCl solution is 2.027 M
1. How to determine the mole fraction of KCl
The mole fraction of KCl can be obtained as illustrated below:
Mass of KCl = 34.0 gMolar mass of KCl = 74.5 g/molMole of KCl = mass / molar mass = 34 / 74.5 = 0.456 moleMass of water = 225 gMolar mass of water = 18 g/molMole of water = mass / molar mass = 225 / 18 = 12.5 molesTotal mole = 0.456 + 12.5 = 12.956 molesMole fraction of KCl =?Mole fraction of KCl = Mole of KCl / total mole
Mole fraction of KCl = 0.456 / 12.956
Mole fraction of KCl = 0.035
2. How to determine the molarity of the KCl solution
The molarity of the KCl solution can be obtained as follow:
Mole of KCl = 0.456 moleVolume = 239 mL = 239 / 1000 = 0.239 LMolarity of KCl = ?Molarity = mole / volume
Molarity of KCl = 0.456 / 0.239
Molarity of KCl = 1.908 M
3. How to determine the molality of KCl solution
The molality of the KCl solution can be obtained as follow:
Mole of KCl = 0.456 moleMass of water = 225 g = 225 / 1000 = 0.225 KgMolality of KCl = ?Molality = mole / mass of water (in Kg)
Molality of KCl = 0.456 / 0.225
Molality of KCl = 2.027 M
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20. Which of the following products could form in a chemical reaction between sulfuric acid and
calcium carbonate? Use the models they provided to complete the chart below.
Calcium sulfate, carbon dioxide, and water are produced when sulfuric acid and calcium carbonate interact.
What results from the reaction of calcium carbonate and sulfuric acid?The insoluble in water free lime (CaCO3) interacts with sulfuric acid. It takes only a few minutes for sulfuric acid and lime to react and produce gypsum. H2SO4 + Lime CaCO3 = CaSO4 (gypsum).
What occurs when calcium and sulfuric acid are combined?Each of these metals forms a layer of insoluble sulfate when exposed to sulfuric acid, which slows or stops the reaction altogether. A white precipitate of calcium sulfate and a small amount of hydrogen are formed in the calcium case.
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ANALYZE Explain why the liquid in a thermometer expands as temperature increases. How is this related to the kinetic energy of
the particles that make up the liquid?
At which of the following temperatures will gas particles have the slowest root mean-squared speed?
63c
25c
54c
19c
The speed that reflects the average kinetic energy of the molecules is known as the root-mean-square speed. using N2 at 25 °C.
Does root mean square speed vary with temperature?The square root of temperature and the square root of the molar mass are both exactly proportional to the rms velocity. Thus, doubling the rms velocity of the molecules when the temperature of a specific gas is quadrupled.
What is the root mean square temperature?The root mean square velocity of gaseous hydrogen molecules equals that of oxygen molecules at 47°C at what temperature.
A gas will effuse more quickly the lighter it is; conversely, the heavier a gas is ,the slower it flows, the more. Helium (He) will have the highest rate of effusion since it has the lowest molecular weight (atomic weight, in this example).
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Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by Se.
The ground state electron configuration for the monoatomic ion is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6.
What is a monoatomic ion?A monoatomic ion is an ion that contains only one atom. We can be able to form an ion by the addition or by the removal of an electron from the atom. We form a positive ion by the removal of an electron and we form a negative ion by the addition of an electron.
Now we have the element that is called selenium (Se) the ion that is formed by this element is Se^2-. Selenium is able to form a monoatomic ion when it gains two electrons. The electron configuration of this ion is; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6.
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If a certain piof metal is cooled, it will conduct electricity better
If a certain piece of metal is cooled it will conduct current better is a hypothesis.
When a conductor is connected to a fluctuating magnetic flux, it induces closed loops of electric currents known as eddy currents. They create closed circuits in a plane perpendicular to the magnetic field and are subject to Faraday's law of electromagnetic induction. These currents will flow in a direction that opposes the shift required by the Lenz law.
Eddy currents are created when a conductor is traveling through a magnetic field or when the magnetic field around a conductor at rest changes over time. They arise from variations in the strength and direction of a conductor-linked magnetic field or magnetic flux.
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The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an oxidizing agent. A 7.97 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq) is completely oxidized by 34.8 mL of a 0.130 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is
BrO−3(aq)+Sb3+(aq)⟶Br−(aq)+Sb5+(aq)(unbalanced)
Calculate the amount of antimony in the sample and its percentage in the ore.
mass of antimony in grams:
percentage of antimony:
The mass of antimony present in the sample is 1.65 g
The percentage mass of antimony in the sample is 20.7%.
What moles of antimony is present in the sample?The number of moles of antimony present in the sample is determined from the mole ratio of the reaction.
The mole ratio of the reaction is obtained from the balanced equation of the reaction as follows:
Balanced equation of the reaction:
BrO₃⁻ (aq) + 3 Sb³⁺ (aq) + 6 H⁺ ⟶ Br⁻ (aq) + 3 Sb⁵⁺ + 3 H₂O
moles of KBrO₃ in the 34.8 mL of a 0.130 M aqueous solution of KBrO₃ is determined as follows:
Moles = molarity * volume in litersMoles of KBrO₃ = 0.13 * 34.8/1000
Moles of KBrO₃ = 0.004524 moles
1 mole of KBrO₃ reacts with 3 moles of Sb³⁺
Moles of Sb³⁺ reacted = 0.004524 * 3
Moles of Sb³⁺ reacted = 0.13572 moles
The mass of antimony present = moles * molar mass
Molar mass of antimony = 121.76 g/mol
Mass of antimony = 121.76 * 0.13572
Mass of antimony = 1.65 g
Percentage mass of antimony = (1.65/7.97) * 100%
Percentage mass of antimony = 20.7%
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Example 1:
A student dissolves 5.00 g of CaCl₂ into 200.0 g of H₂O. The temperature changes from 25.0°C to 28.0°C.
1.Calculate q surr
a. Find mass of solution (solute + solute).
b. Calculate heat of surroundings q = MCAT. Convert to KJ.
2520 joule is the heat (q) when a student dissolves 5.00 g of CaCl₂ into 200.0 g of H₂O. The temperature changes from 25.0°C to 28.0°C.
H₂O mass=200.0 g
c of H₂O= 4.2 joules per gram
Δt=3 °C
q=mcΔt
q=200.0 g×4.2×3
q=2520 joule
mass of solution= (solute + solute)
mass of solution=5.00 g+200.0 g
mass of solution=700 g
Heat has a very precise meaning in thermodynamics that is distinct from how we typically use the word. Heat is the thermal energy that is transmitted when two systems with different surface temperatures come into contact. Heat is denoted by the letters q or Q and is measured in Joules.
Because it is defined in the context of a process through which energy can be transmitted, heat is occasionally referred to as a process quantity. We don't discuss the heat that a cup of coffee contains, but we may discuss the heat that the cup of hot coffee transfers to your hand. Another significant characteristic is heat.
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How many oxygen atoms are
present in one mole of
dinitrogen pentoxide?
N2O5
1.20 x 10^24
3.01 x 10^24
4.21 x 10^24
6.02 x 10^23
There are 5 oxygen atoms in one nitrogen pentoxide. The number of oxygen atoms in one mole of nitrogen pentoxide is 3.01 × 10²⁴.
What is one mole?Any substance containing 6.022 × 10²³ atoms is called one mole of the substance. This number is called Avogadro number. Hence, one mole of every element contains Avogadro number of its atoms.
One mole oxygen contains 6.022 × 10²³ oxygen atoms. Similarly one mole of a compound contains 6.022 × 10²³ number of its constituent molecules.
Now, the number of oxygen atoms in one mole of N₂O₅ will be 6.022 × 10²³ × 5 = 3.01 × 10²⁴. Therefore, option b is correct.
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Mole measure the number of elementary entities of a given substance that are present in a given sample. 6.02 x 10²³ oxygen atoms are
present in one mole of dinitrogen pentoxide N[tex]_2[/tex]O[tex]_5[/tex]. The correct option is option 4.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance.
One mole of any substance contains 6.02 x 10²³ number of atoms. 6.02 x 10²³ is called Avogadro number. Mole is inversely proportional to Avogadro number.
Therefore, 6.02 x 10²³ oxygen atoms are present in one mole of dinitrogen pentoxide. The correct option is option 4.
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Christopher is a suspect who left his bloody fingerprints on the steering wheel of his car. How would a forensic scientist BEST categorize these blood stains?
A.
transfer
B.
impact
C.
circular
D.
passive
Christopher is a suspect who left his bloody fingerprints on the steering wheel of his car. A forensic scientist would transfer blood stains.
What is blood stain ?The most frequent sort of bloodstain pattern found at crime scenes is impact spatter. When anything touches a blood source, it happens. The blood in impact blood spatter patterns is frequently circular rather than elongated. Impact spatter comes in two varieties are rear spatter and forward spatter.
The crime scene team used an immunochromatographic technique to identify human blood qualitatively. Such testing is meant to be used sparingly at crime scenes when the human origin of suspected bloodstains is in doubt and when it is urgent to determine if the bloodstains are of human origin.
Thus, option A is correct.
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Huda sees an obvious set of fingerprints on a mirror at a crime scene. How can she BEST preserve this evidence?
A.
Sketch the shape of the prints.
B.
Cut the fingerprints out of the mirror.
C.
Use clear tape to lift the prints.
D.
Make a plaster mold of the prints.
If Huda sees an obvious set of fingerprints on a mirror at a crime scene, the way in which she could best preserve this evidence is to: C. use clear tape to lift the prints.
What is an evidence?In English language, an evidence can be defined as a collection of factual information that comprises empirical statistics and analysis, which are typically used to show or prove that an action, event, message, etc., is credible, reliable, truthful, and verified.
The type of evidence.In Forensics, there are different types of evidence that are used in combatting crimes and these include the following:
Real evidenceDocumentary evidence.Impression evidence.Trace evidence.Demonstrative evidence.Testimonial evidence.Additionally, it is very important and essential that forensic experts and scientist preserve any evidence that is seen or obtained from a crime scene, especially by choosing the most efficient and effective technique (method) such as using a clear tape to lift set of fingerprints on a mirror.
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Answer: C
Explanation:
2. When 47.5 J of heat are added to 13.2 g of a liquid, its temperature rises by 1.72 °C. What i
the heat capacity of the liquid?
answer : 2.02 J/g°C
Answer:
Below
Explanation:
specific heat cap = j / (gm c)
= 47.5 / (13.2 *1.72) = 2.09 j / (gm-c) or = 2093 j/(kg-C)
Heat capacity = 47.5 / 1.72 = 27.6 J / C
Draw the Lewis structure for CF3+ and determine the formal charge on the C.
The formal charge that is carried by the carbon atom is +1.
What is the formal charge on carbon?Let us recall that the formal charge is defined as the charge that an atom in a compound appears to have. We know that the formal charge can be obtained by the use of the formula;
Formal Charge = [# valence electrons on neutral atom] – [(# lone electron pairs) + (½ # bonding electrons)]
Now applying this formula to the specie that we have here it would become;
Formal Charge = (4 - 0) + 1/2(6)
Formal Charge = 4 - 3
Formal Charge = 1
It then follows that the formal charge that would appear on the specie is +1 as shown in the image attached here.
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1. 25 cm³ of a solution of 0.1 mol dm-³ NaOH reacts with 51.5 cm³ of a solution
of hydrochloric acid. What is the molarity of the acid?
The molarity of the acid is the 64.3dm³
Molarity is the amount of a substance in a certain volume of solution
Here given data is
25 cm³ of a solution of 0.1 mol dm-³ NaOH reacts with 51.5 cm³ of a solution of hydrochloric acid
We have to calculate molarity = ?
So the molarity = number of moles of solute/volume of solution in L or dm³
1. 25 cm³ = 1.25ml = volume
Molarity = 51.5 cm³ × 1.25ml
Molarity = 64.3dm³
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4. A student performed a steam distillation of toluene and water and observed that the mixture boiled at
84.5 °C, The student collected the distillate in a graduated cylinder that was at room temperature (25°C)
The distillation was stopped after 2.0 mL of water had been collected. At first, the student was surprised
to see how much toluene had been collected, but after performing some calculations, the student realized
that it made sense. What volume of toluene had been collected? Show your work
The volume of toluene had been collected is 79.8L
Steam distillation is a process used for the recovery of volatile compounds with high boiling points and from inert and complex matrices solid and liquid using saturated or superheated steam as separation and energy agent
Here a student performed a steam distillation of toluene and water
So we have to calculate the volume of toluene = ?
So density = mass/volume
Rearranging the formula
Volume = mass × density
So mass of toluene = 92.14g/mol
Density of toulene = 867kg/m³
So Volume = mass × density
Volume = 92.14g/mol×867kg/m³
Volume = 79.8L
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Aluminum sulfate and calcium hydroxide react to form aluminum hydroxide and calcium sulfate. How many grams of calcium sulfate will be produced it 1.40 moles of aluminum hydroxide are produced?
As per the balanced reaction, 3 moles of calcium hydroxide produce 2 moles of aluminium hydroxide and 3 moles of calcium sulphate. The number of moles of calcium sulphate to produce 1.40 moles of aluminium hydroxide is 2.1 moles. Thus 2.1 moles of calcium sulphate will be produced.
What is calcium sulphate?Calcium sulphate is an inorganic compound formed from reaction of calcium hydroxide with any sulphates. The balanced equation of the given reaction is written as:
[tex]\rm Al_{2}(SO_{4})_{3} + 3Ca(OH)_{2} \rightarrow 2 Al(OH)_{3} + 3 CaSO_{4}[/tex]
As per the balanced reaction, 3 moles of calcium hydroxide 2 moles of aluminium hydroxide.Given that 1.40 moles of aluminium hydroxide is produced. The number of moles of calcium hydroxide required for these much product is:
= (1.40 × 3) 2 = 2.1.
3 moles of calcium hydroxide produce 3 moles of calcium sulphate. Thus, 2.1 moles gives 2.1 moles of product. Hence, number of moles of calcium sulphate produced is 2.1 moles .
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