2.20 g (to 3 sig. figs.) the maximum mass of water that could be produced by the chemical reaction. round your answer to significant digits.
hexane is C6H14 or put another way, as in the question CH3(CH2)4CH3. Actually, it is incorrect as depicted in the question.Nonetheless..
2C6H14 + 19O2 ===> 12CO2 + 14H2O ... balanced equation
moled hexane present = 2.6 g x 1 mole/130 g = 0.02 moles
moles O2 present = 5.29 g x 1 mole/32 g = 0.165 moles
Which reactant is limiting? Hexane = 0.02/2 = 0.01; O2 = 0.165/19 = 0.0087
Thus O2 is limiting...
moles of H2O that can be produced =0.165 moles O2 x 14 H2O/19 CO2 = 0.122 moles H2O
Mass of water( H2O) = 0.122 moles x 18 gm/mole = 2.20 g (to 3 sig. figs.)
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What elements does bromine react with?
With many of the metals and elements, anhydrous bromine is less reactive than wet bromine; however, dry bromine reacts vigorously with aluminium, titanium, mercury as well as alkaline earth metals and alkaline metals.
Bromine is the only liquid nonmetallic element at room temperature and one of five elements on the period table that are liquid at or close to room temperature. The pure chemical element has the physical form of a diatomic molecule, Br2.
It is a heavy, mobile, reddish-brown liquid, that evaporates easily at standard temperature and pressures in a red vapor (its colour resembles nitrogen dioxide) that has a strong disagreeable odour resembling that of chlorine. A halogen, bromine resembles chlorine chemically but is less active. It is more active than iodine, however. Bromine is slightly soluble in water, and highly soluble in carbon disulfide, aliphatic alcohols (such as methanol), and acetic acid. It bonds easily with many elements and has a strong bleaching action.
Bromine is highly reactive and is a powerful oxidizing agent in the presence of water. It reacts vigorously with amines, alkenes and phenols as well as aliphatic and aromatic hydrocarbons, ketones and acids (these are brominated by either addition or substitution reactions).
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atp is considered a high-energy molecule. when atp undergoes hydrolysis to adp, how much energy is produced?
A. 7.3 kcal/mole is required
B. 7.3 kcal/mole is released
C. 21.9 kcal/mol is released
D. 14.6 kcal/mole is released
ATP is considered a high-energy molecule. When ATP undergoes hydrolysis to ADP, 7.3 kcal/mol energy is produced.
ATP must continuously undergo replenishment to fuel the ever-working cell. The routine intracellular concentration of ATP is 1 to 10 uM.
What is hydrolysis?
Hydrolysis is a chemical reaction of the interaction of chemicals with water, which leads to the decomposition of both the substance and the water. Hydrolysis reactions are possible with salts, carbohydrates, proteins, fats, etc. Hydrolysis of organic substances in catabolic reactions usually takes place with the participation of enzymes.Proteins are divided into amino acids, fats into glycerol and fatty acids, and polysaccharides into monosaccharides.Hydrolysis disrupts the bond network in silicates and is therefore considered a fundamental step in the dissolution of silicate and aluminosilicate glasses, ceramics and minerals.To know more about hydrolysis reactions, click the link given below:
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draw an alcohol and an alkyl bromide that could be combined to give the ether shown. an alkyl bromide and alcohol combine to form an ether. the ether is an oxygen bonded to a 6 carbon ring and isopropyl group. draw the alkyl bromide. draw the alcohol.
The product isopropoxycyclonehexane (ether) can be obtained from the following reaction of bromocyclohexane with 2-propanol in the presence of strong base
bromocyclohexane + 2-propanol ----(NaH/SN2) ---> isopropoxycyclonehexane
This occurs due to the strong base and the SN2 reaction.
Mechanism:
The strong base, sodium hydride abstracts a proton from 2-propanol to form an anion. This anion reacts with bromocyclohexane by SN2 mechanism to form isopropoxycyclonehexane.
Substitution reactions are those reactions in which one functional group is replaced by another functional group.
Two types of substitution reactions can occur in haloalkanes: SN1 and SN2.
Thus, the SN2 substitution reaction, in which the halogen is released from the haloalkane, and the nucleophile attacks the carbon's positive charge. SN2 in which the nucleophile attacks the halogen's carbon, causing the halogen to be replaced in which nucleophile attack.
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Only the largest stars more than 10 times the size of the Sun will go
supernova and possibly become black holes.
O True
O Flase
188.0 mL of 0.400 M HNO3 is added to 133.4 mL of NaOH of unknown
concentration.
The 188.0 mL of 0.400 M HNO3 is added to 133.4 mL of NaOH of unknown concentration. 0.564 M is the answer HNO3 (aq) + NaOH (aq) ---> H2O(l) + NaNO3 (aq).
What is concentration?
Concentration is the act of focusing all of one's attention on a particular object, task, or activity. It is a key mental skill that is necessary for achieving goals, making decisions, and solving problems. Concentration requires self-discipline and the ability to block out distractions. When concentration is successful, it can help individuals to become more productive and successful in their daily lives.
By using stock to working solution equation
M1V1 = M2V2
188.0 x 0.400 = M2 X 133.4
Where,
M1 = Molar concentration of stock solution 1.
V1 = volume of stock solution 1
M2 = molar concentration of unknown solution
V2 = volume of unknown solution.
Now, we find out the concentration of unknown solution
188.0 x 0.400 = M2 X 133.4
188.0 x 0.400/133.4 = M2
0.564 M = M2 is the correct answer.
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sum of the internal energy plus the product of the pressure and volume for a reaction
Enthalpy is a thermodynamic system's internal energy total as well as the volume times pressure ratio.
What do you name a thermodynamic system's total internal energy as well as the volume times pressure ratio?As stated in the equation: H=U+PV, enthalpy (H) is the result of adding internal energy (U) and the product of pressure and volume (PV). The heat evolved (either emitted or absorbed) during a process that runs at constant pressure is equivalent to the change in enthalpy.
What are the effects of pressure and volume on internal energy?The energy within remains constant. The ideal gas law states that when a gas is compressed while maintaining a constant pressure, the temperature decreases according to the volume. In this instance, more energy than you input heats the system.
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you have two atoms which have large differences in electronegativities. will they make an ionic or covalent bond
They make Ionic Bond, In general, large differences in electronegativity result in ionic bonds, while smaller differences result in covalent bonds
What is Ionic Bond?
Ionic bond refers to the electrostatic force of attraction that binds the two ions with opposing charges together.
The full transfer of one or more electrons from one atom to the other, which causes the atoms to assume their closest inert gas state, results in the formation of a chemical bond between two atoms.
To complete their octet configuration, one method is to provide or absorb electrons. An ionic bond or electrovalent bond is the name given to the bond created by this sort of combination. When one atom receives electrons while the other atom loses electrons from its outermost level, a bond of this type is created.
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which of the five basic geometries for molecules and ions has the largest bond angle? linear planar triangular tetrahedral square planar octahedral
The highest bond angles are seen in ions and linear molecules.
The Lewis electron-pair technique identifies which atoms have lone pairs of electrons and can be used to forecast the number and types of bonds that will exist between the atoms in a substance. The structures of many compounds and polyatomic ions with a central metal atom can also be predicted by the VSEPR model, as can the structures of practically any molecule or polyatomic ion with a central nonmetal atom. The foundation of the VSEPR theory is the idea that electron pairs in bonds and lone pairs reject one another and would, as a result, adopt a geometry that spreads them as far apart as feasible. The bond angles in linear geometry is 180deg while in planar triangular is 120deg, tetrahedral is 109.5deg, octahedral is 90deg.
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a 69.5 g sample of the compound x3o4 contains 19.2 of oxygen atoms. what is the molar mass of element x?
The two main postulates that was given by Antoine Lavoisier are, oxygen play an important role in combustion and the other is mass of the reactant and product is conserved. Therefore, the mass of element x is 50.3g.
What is law of conservation of mass?According to Law of conservation of mass, mass can neither be created nor be destroyed. Mass can only be transformed from one form to another. The law of conservation of mass was given by Antoine Lavoisier. Every reaction in nature follow the law given by Antoine Lavoisier that is mass is always conserved.
mass of compound =69.5 g
mass of oxygen =19.2 g
mass of X=mass of compound - mass of oxygen
= 69.5 -19.2
= 50.3g
Therefore, the mass of element x is 50.3g.
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a sample of gas isolated from unrefined petroleum contains 90.0% ch4, 8.9% c2h6, and 1.1% c3h8 at a total pressure of 307.2 kpa. what is the partial pressure of each component of this gas? (the percentages given indicate the percent of the total pressure that is due to each component.)
There are methods to calculate partial pressures: 1)Use PV = nRT the total pressure is 3.4 pKa.
Use the mole fraction of every fueloline to calculate the share of strain from the full strain assignable to every man or woman gasthis query the chances of 3 gases in a fueloline combination along side the full strain are given.
According to Dalton's law, general strain is the sum of partial pressures. The partial pressures then, may be calculated with the aid of using multiplication of the percents with the aid of using the full strain.
1-Partial strain of methane:
90.0100×307.2=276.5kPa
2- Partial strain of ethane:
8.9100×307.2=27.3kPa
3-Partial strain of propane:
1.1100×307.2=3.4kPa
The general strain is the sum of these 3 partial pressures.
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A pure substance which can only be separated into two or more simpler substances using chemical changes is called
A compound is a substance made up of two or more elements that have chemically joined and can only be broken down chemically into simpler compounds. For instance, pure water is a compound.
What are examples and content?Matter with a definite composition and set of characteristics is referred to as a substance. A substance is every pure element. It is a material when it is pure. Substance examples: Because iron is an element, it's also a substance. Methane is both a material and a compound.
Which material types are there?There are two different types of pure substances: elements and compounds. One particular type of atom makes up each element, whether it exists on its own or as part of a molecule. Compounds are molecules made up of two simpler things than molecules.
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What metals do halogens react with?
All the alkali metals react vigorously with halogens to produce salts, the most industrially important of which are NaCl and KCl. Sodium Chloride is used as a preservative for meat and to melt the ice on the roads (via freezing point depression).
Reactions of halogens with metals
Let's now look at a few examples of reactions between halogens and metals. All of these reactions form salts. Again, the reactions are redox reactions and reactivity decreases as you move down the group.
Reaction with sodium
The halogens react vigorously with hot sodium metal to produce a sodium halide. They oxidise the sodium into Na(I) ions with a charge of +1. Sodium fluoride, chloride, bromide and iodide are all white solids.
Reaction with iron
Halogens can oxidise iron into iron(III) ions. The overall reaction produces an iron(III) halide. However, this reaction only happens with fluorine, chlorine and bromine – iodine isn't a potent enough oxidising agent for the reaction to occur.
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A 355 ml soda can is 6. 2 cm in diameter and has a mass of 20 g. Such a soda can half full of water is floating upright in water.
The length of the can which above the water level that has 6.2cm diameter and a mass of 20g is 5.22cm (using density of water 1000 kg/m^3)
What is density?It is the substance's mass per unit of volume. The symbol most often used for density is ρ and the value of water density that will be used at the question here is 1000 kg/m^3.
This question is incomplete, The complete question is as follows :
"A 355 ml soda can is 6. 2 cm in diameter and has a mass of 20 g. Such a soda can half full of water is floating upright in water. What length of the can is above the water level?"
How to calculate the length of the can which above the water level that has 20g as mass and 6.2cm as diameter (using 1000 kg/m^3 as density of water)?
V = volume of the can = 355ml = 0.355 L = 0.355 * 10^-3 m^3
r = radius of the can = d/2 = 0.062 / 2 = 0.031m
ρ = density of water = 1000 kg/m³
Mc = mass of the can = 20g = 0.020kg
m = mass of water inside can
= ρ * V / 2
= 1000 * (0.355 * 10^-3) / 2
m = 0.1775 kg
Now, let's use the equilibrium of force in vertical direction
Force of buoyancy = weight of can + weight of water inside the can
ρ * V * g - Mc * g + m*g
ρ * (π * r² * h) = Mc + m
1000 * 3.14 * 0.031² * h = 0.020 + 0.1775
3.01754 * h = 0.1975
h = 0.06545m
L = length of can
Volume of can is
V = π * r² * L
0.355 * 10^-3 = 3.14 * 0.031² * L
L = 0.117645m
L' = length of can above water
to calculate length of can above water
L' = L - h
= 0.117645 - 0.06545
= 0.052195m
= 5.22cm (rounded)
Therefore, the length of the can which above the water is 5.22cm.
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a reaction takes place in a flexible container initially at 298 k and volume of 3.00 liters. a reaction takes place causes the container to decrease in volume to 2.50 liters and its temperature becomes 273 k. what is the sign of the enthalpy change involved in this reaction and what is the sign of the work being done?
The sign of the enthalpy change involved in the reaction is negative and the sign of work done is also negative.
A reaction takes place in a flexible container initially at 298 K and volume 3L .then reaction takes place causes decrease in the volume to 2.5L and its temperature becomes 273 K.
T1 = 298 K
V1 = 3 L
V2 = 2.5 L
T2 = 273 K
The Enthalpy change is the name given to the amount of heat evolved or absorbed in a reaction carried out at constant pressure. It is given the symbol ΔH.
H = U+PV
sign of enthalpy change involved in the reaction,
Volume decreases --> PV will decrease
T decreases --> change in energy decreases
so the enthalpy change must be negative, since the change or content of energy is getting lower and same in work done.
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If there are countless billions of stars and galaxies out there, then why does the night sky appear mostly black?
Answer:
Light pollution
Explanation:
Light pollution Is the artificial light from a variety of things-- commonly street lights and building lights that reflect on the sky; cities are a great example of this, and in most photos of cities barely if any stars are visible along with the sky being brighter in some places- that's actually the artificial light blocking out the stars and making the sky appear brighter. (the severity ranges from place to place)
Quote:
"What has happened to the stars?
Of course, they’re still there, but we can’t see them because of light pollution: the excessive and misdirected anthropogenic and artificial light that has invaded our night skies."
Conclusion:
The reason why the sky appears mostly black is light pollution, it not only covers the stars but sometimes makes the sky appear lighter than it should be-- on top of this light pollution has many other negative effects on the environment.
Is CH2O a covalent or ionic bond?
at what rate must the jogger create sweat if he needs to dissipate 2500 kj/h through evaporation alone and maintain a constant body temperature? at what rate must the jogger create sweat if he needs to dissipate 2500 through evaporation alone and maintain a constant body temperature? 10 g/h 1.0 g/h 7600 g/h 1000 g/h
A jogger must produce sweat at a rate of 1000 g/hr in order to evaporate 2500 g while maintaining a steady body temperature. Evaporation is the process by which a substance changes.
from a liquid state to a gaseous one below the temperature at which it boils; in specifically, it is the way in which liquid water enters the atmosphere as water vapour. The air is refilled with moisture by evaporation, primarily from the sea and from plants. The concept of temperature is used to convey quantitatively how hot and cold something is.
Given the following information: specific heat = 3500 J, latent heat = 2.42*106 J/kg, and efficiency = 80%, we need to dissipate 2500 KJ every hour. Q = m*L, where L is latent heat, hence m*2.42*106 = 2500000.
m = 1.03 kg
so, the rate must the jogger create sweat 1000 g/hr.
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what volume of carbon dioxide, measured at 25 °c and 741 torr, can be obtained by the reaction of 50.0 g of caco3 with 750 ml of 2.00m hcl solution?
The reaction of 50.0 g of CaCO3 with 750 mL of 2.00 M HCl solution would produce a volume of 11.2 L of carbon dioxide, measured at 25 °C and 741 torr.
To determine the volume of carbon dioxide produced in the reaction of calcium carbonate with hydrochloric acid, we need to use the balanced chemical equation for this reaction, which is:
CaCO3 + 2 HCl → CaCl2 + H2O + CO2
From this equation, we can see that for every mole of calcium carbonate that reacts, one mole of carbon dioxide is produced. We can therefore use the molar mass of calcium carbonate to convert the given mass of CaCO3 (50.0 g) into moles, and then use the molar volume of a gas at 25 °C and 741 torr to convert the number of moles of CO2 into volume. The molar mass of calcium carbonate is 100.0869 g/mole, so 50.0 g of CaCO3 is equal to 0.500 mol. The molar volume of a gas at 25 °C and 741 torr is 22.4 L/mole, so 0.500 mole of CO2 would have a volume of 11.2 L.
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Which statement best describes why most individual organisms never fossilized?(1 point)
Only organisms that lived in the ocean fossilize.
Conditions for fossilization are rare.
Chemicals that fossilize organisms are rare.
Only organisms with hard parts fossilize.
The statement which best describes why most individual organisms never fossilized is that Conditions for fossilization are rare.
What is fossilization?Fossilization is a term which ia defined as the mechanisms which are chemical, physical, and biological which results in the preservation for long term of animals and plants renants. Fossilization is a type of negative representation of the creatures which is preserved in the substrates as fossil.
Reason for lack of decomposition of fossilizationThe reason for the lack of these fossilized parts can be explained as these parts quickly decompose.
The process of the recycling nutrients which have been consumed by an organism which is used to create its body begins with decomposition.Thus, we concluded that the statement which best describes why most individual organisms never fossilized is that Conditions for fossilization are rare.
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calcite has a chemical formula of caco3, and one gram occupies approximately 0.369 cm3. pyrite (fes2) is 1.8 times denser than calcite. what is the density of fes2?
The density of fes2 4.9 cm3.
1 gram calcite occupies 0.369 cm3 volume , first find density of calcite as explained bellow
mass of calcite = 1 gram , volume of calcite = 0.369 cm
we know formula density = mass/ volume , substitute above values in this formula to find density of calcite
density of calcite = 1/0.369 = 2.71 gram/cm3
given that pyrite is 1.8 times denser than calcite
therefore density of pyrite = 1.8 x density of calcite
substitute values in above formula to find density of pyrite
density of pyrite = 1.8 x density of calcite
density of pyrite = 1.8 x 2.71 = 4.878 gram/cm3
density of pyrite calculated by above method is 4.878 g/cm3 this value is closest value of 4.9 cm3 .
The quantity of some thing in step with unit volume, unit vicinity, or unit period: as. : the mass of a substance in step with unit volume. density expressed in grams per cubic centimeter.
A chemical components is an expression that suggests the factors in a compound and the relative proportions of those factors. If best one atom of a particular type is gift, no subscript is used. For atoms that have two or greater of a particular sort of atom gift, a subscript is written after the image for that atom..
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What is the only special sense in which signals can reach the cerebral cortex without passing first through the thalamus?
a. touch
b. smell
c. taste
d. vision
Smell is the only special sense in which signal reaches the cerebral cortex without passing first through the thalamus of the brain.
What is brain?
The brain is defined as a complex organ which is capable of controlling various actions like thinking, memory,emotions, touch , huger and every regulatory process of our body.
Brain along with the spinal cord make up the central nervous system.The average adult brain is made up of 60% of fat and remaining 40 % comprises of water, carbohydrates, proteins and salts.
It has blood vessels and nerves which include neurons and glial cells.
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1) ATP is considered to be a high-energy molecule. When ATP undergoes hydrolysis to ADP, how much energy is produced?
ATP is considered to be a high-energy molecule. When ATP undergoes hydrolysis to ADP, how much energy is produced?
A) 7.3 kcal/mole is required.
B) 7.3 kcal/mole is released.
C) 21.9 kcal/mol is released.
D) 14.6 kcal/mole is released.
what volume of a 0.125 m hydrobromic acid solution is required to neutralize 29.5 ml of a 0.126 m barium hydroxide solution?
The molarity of barium hydroxide solution is 0.2145 M .
What is molarity?
The proportion of solute moles to solution length is called molarity. Divide the number of moles of HCl by the volume (L) of the solution in which it was dissolved to get the molarity of the acid solution.
What is barium hydroxide ?
Ba(OH)2 is the chemical formula for barium hydroxide, often known as baryta. The powder is an odourless, transparent white colour. The nature of it is toxic. It is ionic in nature; for instance, barium hydroxide, Ba(OH)2, can produce two hydroxide ions per molecule when dissolved in water.
M1*V1 = M2*V2
a.) M1*27.6 /1000 = 0.176*20.5/1000
M1 = 0.1307
b.) M1*19/1000 = 0.154*23.9/1000
M1 = 0.1937
c.) 0.119*24.7 = 2*M2*13.7
M2 = 0.10727
a) molarity of the hydrochloric acid solution = ( volume of base * molarity of base) / ( volume of acid ) = ( 20.5 * 0.176) / (27.6) = 0.1307 M
b) molarity of the hydrochloric acid solution = ( volume of base * molarity of base) / ( volume of acid ) = ( 23.9 * 0.154 / (19) = 0.19371 M
c) molarity of barium hydroxide solution = ( volume of acid * molarity of acid) / ( volume of base ) = ( 24.7 * 0.119) / (13.7) = 0.2145 M
Therefore, molarity of barium hydroxide solution is 0.2145 M .
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four u tubes each have distilled water in the right arm, a solution in the left arm, and a semipermeable membrane between arms.
We are aware that more charged particles should be present in the most concentrated solutions (for KCl, K+, and Cl-). The increased solute concentration draws the water in via osmosis.
As a result, the water level is lowest on the right side of the U-tube (C and D). However, the left side tube (A, B) has a more concentrated solution as compared to the right side tubes (C, D).
The result is that the tube B solution is the highest concentrated.
Describe osmosis.
Osmosis is the naturally occurring net movement of solvent molecules through a selectively permeable membrane in a direction that tends to balance the solute concentrations on the two sides, from a region of high water potential (region of lower solute concentration) to a region of higher water potential.
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We are aware that more charged particles should be present in the most concentrated solutions (for KCl, K+, and Cl-). The increased solute concentration draws the water in via osmosis.
As a result, the water level is lowest on the right side of the U-tube (C and D). However, the left side tube (A, B) has a more concentrated solution as compared to the right side tubes (C, D).
The result is that the tube B solution is the highest concentrated.
Describe osmosis.
Osmosis is the naturally occurring net movement of solvent molecules through a selectively permeable membrane in a direction that tends to balance the solute concentrations on the two sides, from a region of high water potential (region of lower solute concentration) to a region of higher water potential.
Select the dominant intermolecular force between acetone molecules.
a. hydrogen bonding
b. London dispersion forces
c. ion-dipole forces
d. dipole-dipole forces
The dominant intermolecular forces between the acetone molecules (CH3COCH3) is dipole-dipole forces is. D
What is intermolecular force between acetone molecules?Acetone is a dipolar molecule because of the positive and negative charges formed by the carbonyl group present in the compound. Therefore the dominant intermolecular forces between the acetone molecules are dipole-dipole interactions.
Therefore the dominant intermolecular forces between the acetone molecules is dipole-dipole interactions.
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In which state of matter has the LEAST kinetic energy?
A gasgas
B liquidliquid
C solidsolid
D plasma
I think it's c I'm not sure
What group does bromine bond with?
suppose 18.0 g of ice at -10.0c is placed into 300.0 g of water in a 200.0-g copper calorimeter. the final temperature of the water and copper calorimeter is 18.0c. 1) what was the initial common temperature of the water and copper?
The initial common temperature of water and copper is [tex]18.79$^{\circ}$C[/tex].
What is copper calorimeter?
A tool used to gauge the heat produced by a physical or chemical process is a copper calorimeter. It works by using the fact that when heat is absorbed or released by a substance, the temperature of the substance will change.
According to the problem:
The ice is 18.0 g at [tex]-10.0$^{\circ}$C[/tex]. The copper calorimeter and water is of 200 g and 300 g respectively.
The specific heat of ice, water and copper are [tex]2.09 J/g$^{\circ}$C[/tex], [tex]4.184 J/g$^{\circ}$C[/tex], [tex]0.385 J/g$^{\circ}$C[/tex].
As per the conversation of energy, the following equation can be written assuming the common initial temperature of copper and water is [tex]T$^{\circ}$C[/tex].
[tex][2.09\times18\times(10+18)]=[(4.184\times300)+(0.385\times200)](T-18) \\1053.36=1332.2(T-18) \\T-18=\frac{1053.36}{1332.2} \\T=0.79+18\\T =18.79[/tex]
The common initial temperature is [tex]18.79$^{\circ}$C[/tex].
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The number of moles and the mass (in grams) of chlorine, Cl2, required to react with 10.0 g of sodium metal, Na, to produce sodium chloride, NaCl. Show your calculations.
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, mass and moles of chlorine is 14.7g and 0.21 moles respectively.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
2Na + Cl[tex]_2[/tex] → 2NaCl
The mole ratio between sodium and chlorine is 2:1
moles of sodium = mass of sodium/molar mass of sodium
= 10/23
=0.43moles
Number of moles of chlorine that is required to react with sodium =0.43moles/2
=0.21 moles
mass of chlorine = moles of chlorine× molar mass of chlorine
=0.21× 70
= 14.7g
Therefore, mass and moles of chlorine is 14.7g and 0.21 moles respectively.
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qual volumes of two monoprotic acid solutions ( a and b ) are titrated with identical naoh solutions. the volume to reach the equivalence point for solution a is twice the volume required to reach the equivalence point for solution b , and the ph at the equivalence point of solution b is higher than the ph at the equivalence point for solution a . which statement is true?
Statement that is true is : D). Solution A has more concentrated acid than the solution B and acid in solution A is weaker acid than that in solution B.
Why solution A has more concentrated acid than B?The last statement is true and states that a solution A is comparatively more concentrated than solution B but the acid present in solution A is feeble.
This is because that solution A is excessively concentrated which requires an extra NaOH to attain the point of equivalence.
And as the pH that exists at the point of equivalence point is more for solution A, therefore it implies that solution A carries a weaker acid.
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Question: Equal volumes of two monoprotic acid solutions (A and B) are titrated with identical NaOH solutions. The volume to reach the equivalence point for solution A is twice the volume required to reach the equivalence point for solution B, and the pH at the equivalence point of solution A is higher than the pH at the equivalence point for solution B. Which statement is true?
A) The acid in solution A is less concentrated than in solution B and is also a weaker acid than that in solution B.
B) The acid in solution A is more concentrated than in solution B and is also a stronger acid than that in solution B.
C) The acid in solution A is less concentrated than in solution B and is also a stronger acid than that in solution B.
D) The acid in solution A is more concentrated than in solution B and is also a weaker acid than that in solution B.