12.28 L volume at 6.98atm in sample gas occupies 10. 28 l at 8. 34atm. Hence, option A is correct.
What is ideal gas?Ideal gas is a hypothetical gas whose molecules occupy negligible space and have no interactions, and which consequently obeys the gas laws exactly.
In the limit of low pressures and high temperatures, where the molecules of the gas move almost independently of one another, all gases obey an equation of state known as the ideal gas law:
PV = nRT,
P is pressure of gas (atm)T is temperature of gas (K)where n is the number of moles of the gas R is the universal gas constant, 8.3145 joules/K.When Temperature is constant so, it follow Boyle's law:
P1 V1 = P2 V2
P1 = 8.34atm, V1 = 10.28 L, P2 = 6.98atm
V2 = P1 V1 / P2
V2 = 8.34atm x 10.28 / 6.98atm
V2 = 12.28 L
12.28 L volume at 6.98atm in sample gas occupies 10. 28 l at 8. 34atm. Hence, option A is correct.
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A student makes up 2 l of a 3. 0 m aqueous solution of hbr. to this solution she adds 1 l of a 4 m naoh solution. what is the ph of the resulting solution?
A student makes up 2 l of a 3. 0 m aqueous solution of HBr. to this solution she adds 1 l of a 4 m NaOH solution, then the pH of the resulting solution is 13.83.
What is normality?Normality is defined as the ratio of equivalent mass of compound to the volume of solution in litre.
N1 is the normality of HBR = 3m
N2 is the normality of NaOH = 4m
V1 is the volume of the HBr = 2l
V2 is the volume of the NaOH = 1l
V is the total volume of solution = V1 + V2 = 2l +1l
= 3l
Normality of the solution = N
As we know that,
N1V1 - N2V2 = NV
3 × 2 – 4 × 1 = N × 3
6 – 4 = N – 3
N = 2/3 = 0.67 m
(OH-) = N = 0.67 m
Since normality of NaOH is greater than BR . Hence the resulting solution is alkaline.
pOH = -log[OH-]
POH = - log (0.67) = 0.17
As we know that,
PH + pOH = 14
pH = 14 – 0.17
= 13.83
Thus, we calculate that the pH of the resulting solution is 13.83.
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If the viscosity of a solution is quadrupled, the rms-average distance of a collection of diffusing molecules from their starting point would be _________ over the same amount of time
The viscosity of a solution is quadrupled, the rms-average distance of a collection of diffusing molecules from their starting point would be [tex]\frac{1}{2}[/tex] over the same amount of time.
If the viscosity of a solution is quadrupled then the distance of collection of diffusing molecules would be half over the same amount of time. The viscosity of the molecules is dependent on density of the liquid. It is independent to the volume of the liquid.
What is viscosity?Viscosity is measure of a fluid's resistance of flow.
The SI unit of viscosity is Poiseuille (PI) is other units ae newton second per square meter or pascal second. The dimensional formula of viscosity is [[tex]ML^{-1}T^{-1}[/tex]].
The viscosity of liquids decreases rapidly with an increase in temperature, and the viscosity of gases increases with an increase in temperature.
η = [tex]\frac{2ga^{2} (Δρ)}{9v}[/tex]
Where (Δρ) is the density difference between fluid and sphere tested, a is the radius of the sphere, g is the acceleration due to gravity and v is the velocity of the sphere.
Viscosity Types:
Viscosity is the measure of fluid's friction to it's flow. There are two ways to measure the fluid is viscosity is follows:
Dynamic Viscosity (Absolute Viscosity)Kinematic ViscosityLearn more about Viscosity: https://brainly.com/question/23999611
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What two molecules make up sucrose?
Answer:
glucose and fructose
Explanation:
Sucrose is a disaccharide (a kind of sugar made of two monosaccharides) made of glucose and fructose
Which pair of reactants will undergo aldol condensation to produce methyl vinyl ketone?
The pair of reactants which will undergo aldol condensation to produce methyl vinyl ketone is formaldehyde and acetone.
What is aldol condensation?
It occurs only with aldehydes but only those aldehydes which are having alpha hydrogen within them because when two different forms of aldehydes react the elimination of waters molecule occurs which needs one alpha hydrogen within it.
CH₂O + CH3COCH3 will give methyl vinyl ketone elimination of water molecule has to be done.
Therefore, the pair of reactants which will undergo aldol condensation
to produce methyl vinyl ketone are formaldehyde and acetone.
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A buffer containing 0.2000 m of acid, ha, and 0.1500 m of its conjugate base, a−, has a ph of 3.35. what is the ph after 0.0015 mol of naoh is added to 0.5000 l of this solution?
After 0.0015 mol of NAOH is added to 0.5000 l of this solution, the pH is 3.37.
StepsFirst, modify the Henderson-Hassle-batch equation to find the acid's pka.
[tex]pH=pka + log\frac{[A]}{[HA]}[/tex]
[tex]pka = pH-log\frac{[A]}{[HA]}[/tex]
[tex]=3.35- log \frac{[0.1500]}{[ 0.2000 ]}[/tex]
[tex]pka =3.47[/tex]
Molarity of the added NaOH.
[tex]M=\frac{mol}{L}[/tex]
[tex]=\frac{0.0015 mol}{ 0.5000L}[/tex]
= 0.003 M
In water, NaOH will dissociate
[tex]NaOH- > Na^{+} + OH^{-}[/tex]
strong base OH will react with HA
HA+ OH --> [tex]H_{2} O[/tex] + A
the reaction also produced A. as, all OH are consumed in the reaction
HA will be decreased by 0.003 M and A will be increased by 0.003 M.
[tex]HA= 0.2000-0.003 \\= 0.1970[/tex]
[tex]A=0.1500+0.003=0.1530 M[/tex]
solving new pH using pka and the new values of [HA] and [A]
[tex]pH=pka + log\frac{[A]}{[HA]}[/tex]
[tex]=3.35 + log\frac{[0.1530]}{[0.1970]}[/tex]
pH=3.37 is the ph after 0.0015 mol of naoh is added to 0.5000 l of this solution
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A compound composed of 3. 3 % h, 19. 3 % c, and 77. 4 % o has a molar mass of approximately 60 g/mol. What is the molecular formula of the compound?.
The molecular formula of the given compound is [tex]$\mathrm{H}_{2} \mathrm{CO}_{3}$[/tex] also known as Carbonic acid.
What is empirical formula and molecular formula?The simplest whole-number ratio of the various atoms in a compound is represented by an empirical formula.
The precise number of various atom types present in a compound's molecule is indicated by the molecular formula.
Given that,
H = 3.3%
C = 19.3%
O = 77.4%
No. of moles of H = 3.3/1
No. of moles of H = 3.3
No. of moles of C = 19.3 / 12
No. of moles of C = 1.60
No. of moles of O = 77.4/16
No. of moles of O = 4.83
Therefore, the ratio of the atoms of C, H and O = 3.3 : 1.60 : 4.83
Divide by smallest value which you get =3.3 / 1.60 : 1.60 / 1.60 : 4.83 / 1.60
The ratio of the atoms of C, H and O = 2 : 1 : 3
So, the empirical formula is [tex]$\mathrm{H}_{2} \mathrm{CO}_{2}$[/tex]
Let the molecular formula is [tex]$\left(\mathrm{H}_{2} \mathrm{CO}_{3}\right) \mathrm{n}$[/tex]
Then, molar mass [tex]$=(2 \times 1+1 \times 12+3 \times 16) n\\[/tex]
Molar mass = 62n
As the question, 62 n = 60
n = 0.96 or n = 1 (rounded off to nearest ones)
So, the molecular formula is [tex]$\left(\mathrm{H}_{2} \mathrm{CO}_{3}\right) 1=\mathrm{H}_{2} \mathrm{CO}_{3}$[/tex] i.e., the compound is Carbonic acid.
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A piece of wood near a fire is at 23°c. it gains 1,160 joules of heat from the fire and reaches a temperature of 42°c. the specific heat capacity of wood is 1.716 joules/gram degree celsius. what is the mass of the piece of wood?
The mass of the piece of wood is 35.58 g.
Joule = M × T × C
Where, M = mass
T = change in temperature(42C-23C=19 C)
C = specific heat capacity = 1.716 joules/gram
Substituting the values in the equation,
1160 = M × 19 × 1.716
M = 1160/32.604 = 35.58 g
Therefore, the mass of the piece of wood = 35.58 g
What is meant by specific heat capacity?A material's specific heat capacity, which is defined as its heat capacity divided by its mass, determines how much energy is required to increase a gram's temperature by one degree Celsius (or one Kelvin)
What is mass?Mass is the quantity of matter in a physical body.
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When magnesium reacts with hydrochloric acid, hydrogen gas is produced. The amount of gas produced is dependent upon the concentration of hydrochloric acid. Below is the data for a reaction with 1 molar hydrochloric acid. Determine which of the choices shows possible data for a reaction with 2 molar hydrochloric acid. time (mins) 0 123TLON8S 4 5 6 7 9 10 1 M acid hydrogen (cm³) ARANY 17 ATE 230VEL TEEN 0 14 24 31 36 41 44 46 47 48 48
Magnesium is a metal that reacts quickly. Magnesium chloride or hydrogen gas will be produced during the reaction with hydrochloric acid. Following will happen as a result: Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g).
What happens in the magnesium-hydrochloric acid equation reaction?The equation for how magnesium interacts with hydrochloric acid reads: Mg(s)+2 HCl(aq) = MgCl2(aq)+H (g) This experiment can be used to demonstrate the production of hydrogen gas, a single displacement reaction, or even the typical reaction for metals with acid.
Why do hydrochloric acid and magnesium produce heat?Because energy was released into the environment when magnesium or oxygen particle collide to create new bonds, burning magnesium is indeed an exothermic reaction. Baking soda and citric acid react endothermically when the temperature drops. As the temperature rises, magnesium or hydrochloric acid undergo exothermic reactions.
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What mass of copper could be electroplated on the cathode in an experiment where an average of 200 ma was passed through the cell for 35 minutes?
There are 0.138 gram copper could be electroplated on the cathode in an experiment where an average of 200 ma was passed through the cell for 35 minutes .
Calculation ,
Given ; Current passed through copper ( I ) = 200 mA = 200×[tex]10^{-3}[/tex] A
time in second = 35 minutes×60 = 2100 sec
Current ( I )= Q/t
Q =It = 200×[tex]10^{-3}[/tex] A × 2100 sec = 420 C
96500 C of charge = 1 mole
420 C of charge = 1 mole ×420 C/ 96500 C = 0.00435 mol
In , the valancy of Cu is +2 .
2 moles of electron are required for the decomposition of 1 mole of Cu on the cathode .
0.00435 mol of electron are required for the decomposition of Cu = 1mol × 0.00435 mol/2 = 0.002175 mol of Cu
Number of moles of Cu = given mass / molar mass
Mass of Cu = Number of moles of Cu × molar mass = 0.002175 ×63.546
Mass of Cu = 0.138 gram
Therefore , mass of copper is 0.138 gram
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Which metal can be used as a sacrificial electrode to prevent the rusting of an iron pipe? auau cucu mnmn agag
Mn metal can be used as a sacrificial electrode to prevent the rusting of an iron pipe. So, the correct option is (c) Mn.
Commonly, sacrificial electrodes are employed to stop another metal from corroding or oxidising. A metal that is more reactive than the metal being shielded must serve as the sacrificial electrode. Magnesium, aluminium, and zinc are the three metals most frequently used in sacrificial anodes.
Manganese-Magnesium (Mn-Mg) electrode is more suited for on-shore pipelines where the electrolyte (soil or water) resistivity is higher since it has the highest negative electropotential of the three. In order to replenish any electrons that could have been lost during the oxidation of the shielded metal, the highly active metal offers its electrons.
Therefore, Mn metal can be used as a sacrificial electrode to prevent the rusting of an iron pipe. So, the correct option is (c) Mn.
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________ is the major intermolecular attraction responsible for the relatively high boiling points of alcohols.
Answer:
Hydrogen bonding is the major intermolecular attraction responsible for the relatively high boiling points of alcohols.
When comparing the titration curves for the titration of a strong acid with a strong base and the titration of a weak acid with a strong base, which portion of the curves will be the most similar?
When comparing the titration curves for the titration of a strong acid with a strong base and the titration of a weak acid with a strong base, pH increases when we reach the equivalent point.
In strong acid and strong baseInitially the pH rises little by little. This is because the scale of the pH increases is logarithmic. Then it rises sharply near the equivalent point. At this point the remaining hydronium ions are low, and only a small amount of hydroxide ion is needed to raise the pH.
For weak acid and strong baseWeak acid has low pH but second point is firstly the pH rises faster but less quickly when approaching the equivalent point.
The pH produced by titration of weak acid with strong base rises faster at first but less quickly when approaching the equivalent point.
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When an electron passes through the magnetic field of a horseshoe magnet, the electron's?
When an electron passes through the magnetic field of a horseshoe magnet, the electron's direction is changed.
Path of an electron in a magnetic field
The force (F) on wire of length L carrying a current I in a magnetic field of strength B is given by the equation:
F = BIL
But Q = It and since Q = e for an electron and v = L/t you can show that :
Magnetic force on an electron = BIL = B[e/t][vt] = Bev where v is the electron velocity
In a magnetic field the force is always at right angles to the motion of the electron (Fleming's left hand rule) and so the resulting path of the electron is circular.
Therefore :
Magnetic force = Bev = mv2/r = centripetal force
v = [Ber]/m
and so you can see from these equations that as the electron slows down the radius of its orbit decreases.
If the electron enters the field at an angle to the field direction the resulting path of the electron (or indeed any charged particle) will be helical. Such motion occurs above the poles of the Earth where charges particles from the Sun spiral through the Earth's field to produce the aurorae.
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A solution has a [h3o ] of 1 × 10−5 m. what is the [oh−] of the solution? 9 m 14 m 1 × 10−9 m 1 × 10−14 m
option (c) 1 × 10-9 m is the right answer.
The [oh−] of the solution having a [h3o ] of 1 × 10−5 m is 1 × 10-9 m.
What is [OH−] of the solution?The only component of water is H2O, and when the pH of the solution is 7, all of the ions have the same concentration, whereas during dissociation the water splits into H+ and OH- ions.
The concentration of OH- ions will be,
OH- = Kw {H3O+}
{H3O+} = 1 × 10−5 M.
Kw = 14
On substituting the value in the equation,
OH = 14 { 1 × 10−5 M.}
OH = 1 × 10−9 M
Consequently, the [H3O+] of the solution is 1 × 10-5 M.
Option (C) is the right choice because the [OH-] of the solution will be 1 × 10-9 M.
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What are the conjugate acid-base pairs in the reaction of h2seo4h2seo4 with h2oh2o? h2seo4 h2o→productsh2seo4 h2o→products view available hint(s)
The conjugate acid is H2SeO4 and the conjugate base pairs in the reaction is H2O.
The full equation of the reaction is
H2SeO4 + H2O----- H3O^+(aq) + HSeO4
What is conjugate base?Conjugate base are those substance formed when an acid loses a hydrogen ion. Considered a base because it can gain a hydrogen ion to reform the acid.
The conjugate acid is the species that donate a proton to the conjugate base, hence H2SeO4 is the conjugate acid while H2O is the conjugate base because it accepts a proton from H2SeO4.
Thus we concluded that the conjugate acid is H2SeO4 and the conjugate base pairs in the reaction is H2O.
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What is the concentration of the hydroxide ion given that the concentration of the hydronium ion?
The concentration of the hydroxide ion given that the concentration of the hydronium ion 1.0 times 10^-14 M. The reverse mathematical method used to determine the pOH can be used to get the hydroxide ion concentration from the pOH. How many hydroxide ions are there in a solution with a pOH of 5.70, for instance.
Calculate 10-5.70, or "inverse" log, on a calculator (- 5.70). It indicates that one hydroxide ion is produced by one part of the NaOH solution. Because of this, the molar concentration of hydroxide ions in the solution is the same as the molar concentration of the NaOH.
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A piece of metal was heated and then put it into 100.0 mL of water, initially at 21.2 *C. The metal and water were allowed to come to an equilibrium temperature, determined to be 32.0 *C. How much energy did the water absorb? (look at picture)
Answer:
4510 J
Explanation:
To calculate the energy of the water, you need to use the following equation:
Q = mcΔT
In this equation,
-----> Q = energy/heat (J)
-----> m = mass (g)
-----> c = specific heat capacity (J/g°C)
-----> ΔT = change in temperature (°C)
First, you need to determine the mass of the water. To do this, you need to multiply the given volume by the density of water (1.00 g/mL).
100.0 mL H₂O 1.00 g
------------------------ x ------------ = 100.0 g H₂O
1 mL
Now, you can plug the given values into the equation and solve for "Q" (Q = [tex]q_H_2_O[/tex]). The final answer should have 3 significant figures to match the given values with the lowest number of sig figs.
Q = ? J c = 4.18 J/g°C
m = 100.0 g ΔT = 32.0 °C - 21.2 °C = 10.8 °C
Q = mcΔT
Q = (100.0 g)(4.18 J/g°C)(10.8 °C)
Q = 4510 J
4510Answer:
Explanation:
A formic acid buffer solution contains 0. 20 m h c o o h hcooh and 0. 24 m h c o o − hcoox−. the pka of formic acid is 3. 75. what is the ph of the buffer?
A buffer solution contains an equivalent amount of acid and base. The pH of the solution with an acid dissociation constant (pKa) value of 3.75 is 3.82.
What is pH?The amount of hydrogen or the proton ion in the solution is expressed by the pH. It is given by the sum of pKa and the log of the concentration of acid and bases.
Given,
Concentration of salt [HCOO⁻] = 0.24 M
Concentration of acid [HCOOH] = 0.20 M
The acid dissociation constant (pKa) = 3.75
pH is calculated from the Hendersons equation as,
pH = pKa + log [salt] ÷ [acid]
pH = 3.75 + log [0.24] ÷ [0.20]
= 3.75 + log (1.2)
= 3.75 + 0.079
= 3.82
Therefore, 3.82 is the pH of the buffer.
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In general ethers have a much lower boiling point than their isomeric alcohols. why?
Ethers have a much lower boiling point than their isomeric alcohols because ether have not hydrogen bond that why ethers have lower boiling point .
Ethers will not have a hydrogen atom attached to the oxygen atom as alcohols do. Because ether molecules can not form intermolecular hydrogen bonds, their boiling points are much shorter than those of alcohol with such a comparable mass.
Owing to the combination of intermolecular H-bonding in alcohols though not in ethers, alcohols possess higher boiling temperatures than isomeric ethers.
Therefore, ethers have a much lower boiling point than their isomeric alcohols because ether have not hydrogen bond that why ethers have lower boiling point .
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If it takes 35. 04 ml of a 0. 2455 m naoh solution to neutralize 25. 00 ml of an unknown hcl solution, what is the molarity of the hcl solution?
If it takes 35.04ml of a 0.2455M NaOH solution to neutralize 25. 00ml of an unknown HCl solution, the molarity of the HCl solution is 0.34M.
How to calculate molarity?The molarity of a solution can be calculated using the following formula:
C1V1 = C2V2
Where;
C1 = molarity of acidC2 = molarity of baseV1 = volume of acidV2 = volume of baseAccording to this question, it takes 35. 04ml of a 0. 2455M NaOH solution to neutralize 25.00ml of an unknown HCl solution. The molarity of the HCl can be calculated as follows:
35.04 × 0.2455 = 25.0 × V2
8.602 = 25C2
C2 = 8.6/25
C2 = 0.34M
As a result, the molarity of the HCl solution is 0.34M if it takes 35. 04ml of a 0.2455M NaOH solution to neutralize 25ml of an unknown HCl solution.
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Natalie observes these characteristics in the model of an atom. (i) includes positive charge (ii) contains electrons (iii) explains the photoelectric effect (iv) suggests the probable location of electrons
Natalie is observing electron cloud model of an atom.
What is electron cloud model?The electron cloud model is a representation of an atom that has a small, massive nucleus that is encircled by a cloud of electrons that are traveling quickly. According to the electron cloud model, although we can never be certain of an electron's precise location, it is more likely that they are in certain regions.It is created by Erwin Schrodinger.Due to the uncertainty principle, the electron cloud model establishes the zone of probability describing the electron's location.The electromagnetic force pulls the electrons of an atom toward the protons in the nucleus. The electrons are constrained by this force inside an electric potential well surrounding the smaller nucleus, therefore an external energy source is required for the electron to escape.Learn more about electron cloud model here:
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what is the nature of ions formed by different atoms.
The nature of ions formed by different atoms is as follows:
Metal atoms form positively-charged ionsNon-metal atoms form negatively-charged ionsWhat are ions?
Ions are substances which are formed when neutral atoms gain or lose electrons.
There are two types of ions based on the charge the ion carries;
anions - which are negatively-chargedcations - which are positively-chargedThe nature of the ions formed by different atoms depend on whether the atoms are atoms of metals or atoms of non-metals.
Metal atoms form positively-charged ions by the loss of one or more electrons as illustrated below:
M → M⁺ + e⁻where; M is a metal atom, M⁺ is a metal ion, and e⁻ is an electron.
Non-metal atoms form negatively-charged ions by the gain of one or more electrons as illustrated below:
N + e⁻ → N⁻where; N is a non-metal atom, N⁻ is a non-metal ion, and e⁻ is an electron.
In conclusion, the nature of ions formed by atoms depends on the nature of the atom, whether they are metallic or non-metallic atoms.
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This family (ethane, propane, butane, etc) of materials is likely to have what set of properties?
This family (ethane, propane, butane, etc) of materials is likely to have following set of properties.
The alkanes are non- polar solvents.The alkanes are immiscible in water but freely miscible in other non-polar solvent .The alkanes are consisting of weak dipole dipole bonds can not breaks the strong hydrogen bond.The alkanes having only carbon (C) and hydrogen (H) atom which is bonded by a single bonds only.The alkanes posses weak force of attraction that is weak van der waals force of attraction.The ethane, propane, butane, belong to alkanes family.The alkanes are also considers as saturated hudrocarbons. Ethane is found in gaseous stae Ethane is the second alkane followed by propane followed by butane.
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what is the pH value of Potassium hydroxide
Answer:
from 10-14
Explanation:
the pH of potassium hydroxide is extremely high and is a strong base although the exact value depends on the concentration of the base in water.
If the molar mass of na2so4•nh2o is 304.04 g/mol, what is the hydration number 'n'?
Hydration number is 9
Given:
molar mass of na2so4•nh2o = 304.04 g/mol
To Find:
hydration number 'n'
Solution: hydration number is the number of molecules of water with which an ion can combine in an aqueous solution of given concentration.
Atomic mass of Na = 23g
S = 32g
0 = 16g
H = 1g
Molar mass of the compound is evaluated as:
2(23) +32 + 4(16) + n[2(1) +16] = 304.04
46 +32 +64 +18n = 304.04
142 +18n = 304.04
18n = 304.04 - 142
18n = 162.04
n = 9
So, hydration number is 9
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The heating element of a hair dryer dissipates 1500 w when connected to a 180 v outlet. part a what is its resistance?
The resistance of the heating element is 21.61 Ω
Given
The power dissipated = 1500 W
Voltage = 180 V
We know that
Power = Voltage * Current
⇒ Power / Voltage = Current
⇒ 1500 W/180 V = Current
⇒ 8.33 A = Current
In order to calculate the resistance of the heating element. We Have to apply the formula
Power = (Current)^2 * Resistance
⇒ Resistance = Power / (Current)^2
⇒ Resistance = 1500 W/ (8.33) ^2
⇒ Resistance = 21.61 Ω
Hence the resistance of the heating element is 21.61 Ω
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type of molecule is shown below?
H
O=C
H
Answer:
Carbonyl
Explanation:
While the diagram is slightly unclear, the molecule most likely being shown is a carbonyl. A molecule is a carbonyl when there is a carbon double-bonded to an oxygen.
How much has co2 increased in the atmosphere since 1750? group of answer choices
Since 1750, about 46 percent of CO2 is increased in the atmosphere.
Co2 gas is considered as Greenhouse effect.
Green house effect : The trapping of the sun's warmth in a lower atmosphere of planet, due to the more and more transparency of the atmosphere to visible radiation from the sun than the infrared radiation which are emitted by the surface of the planet.
Due to greenhouse effect the temperature of earth surface increases.
Many reasons for increase in Greenhouse effect are as follow:
DeforestationBurning of fossil fuels.FarmingIndustrial waste and landfills. Global warmingdepletion of ozone layerAir pollutionDue to these reason the percentage of CO2 in the atmosphere is increased by 46.
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Draw the mechanism for the reaction of acetyl chloride (ethanoyl chloride) with the ethoxide anion to yield ethyl acetate (ethyl ethanoate)
Ethanoyl chloride is a common acyl chloride. Any other acyl chloride will function similarly. Similarly, ethanol is regarded as a typical alcoholic beverage. simply substitute the CH3CH2 group with an alkyl group.
The first stage of the reaction (the addition stage) includes a nucleophilic attack on the relatively positive carbon atom by one of the lone pairs on an ethanol molecule's oxygen.
The second stage (elimination) occurs in two stages. The carbon-oxygen double bond reforms in the first step, releasing a chloride ion.
The ethanoyl chloride then removes a hydrogen ion, yielding ethyl ethanoate and hydrogen chloride.
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The empirical formula of the sugar glucose is ch2o. if the relative molecular mass of glucose is measured to be 180.16 g/mol then what is the molecular formula for glucose?
Answer:
18016
Explanation:
(empirical formula)n=molar mass
Answer: C_6 H_12 O_6
Explanation: The molar mass of glucose is given as 180.16 gm/mol.
It is 40% carbon, so the weight of the carbon is 40% of 180.16 =72.06 gm. The molar weight of the carbon is 12.011 gm, so the total number of the moles of carbon are 72.06/12.011 = 6 moles.
It is 6.719% of hydrogen, so the weight of the hydrogen is 6.719% of 180.16 = 12.105 gm. The molar weight of the hydrogen is 1.008 gm, so the total number of the moles of hydrogen are 12.105/1.008 = 12 moles.
It is 53.27% of oxygen, so the weight of the oxygen is 53.27% of 180.16 = 95.97 gm. The molar weight of the oxygen is 16 gm, so the total number of the moles of oxygen are 95.97/16 = 6 moles.