Answers
Answer:
The mechanism is E1 and the product is cyclohexene
Explanation:
Attached to this answer is an image of the reaction mechanism of the reaction between cyclohexanol and concentrated sulfuric acid/phosphoric acid. The acid (H3O^+) acts as catalyst.
We can see that the first step in the mechanism is the protonation of the -OH group of the alcohol. This is followed by loss of water molecule which is a good leaving group.
The water now acts as a Lewis base by abstracting a proton from the substrate, forming cyclohexene and regenerating the acid catalyst.
Related Questions
Calculate the mass of a body
Whose volume is
Is 2cm3 and
density is 520cm3
Answers
Answer:
The answer is
1040gExplanation:
Density = mass / volume
mass = density × volume
volume = 2cm³
density = 520g/cm³
mass = 2 × 520
= 1040g
Hope this helps you
PLS HELP GIVING BRAINLIEST AND 100 POINTS
Which of the following describes air temperature and air pressure at higher altitudes?
Air temperature increase while air pressure decreases
Air temperature and air pressure both decrease
Air temperature and air pressure both increase
Air temperature decreases while air pressure increases
Answers
The air pressure is low at higher altitudes. The pressure decreases up the higher altitudes. Same with temperature, as we go up the higher altitudes the temperature decreases as molecules becomes more far apart.
altitude ↑ || pressure ↓
altitude ↑ || temperature ↓
A local barista serves coffee at 85°C. You add ice to the coffee to cool it to 55°C. Assume that an ice cube is 24 g and -18.5°C. How many ice cubes would you need to add to your 355 mL cup of coffee to bring it to 55°C? The specific heat of ice is 2.05 J/g°C, the specific heat of water is 4.184 J/g°C, and the specific heat of fusion of water is 334 J/g. Remember that an ice cube will need to be warmed to 0°C, will melt, and then the newly melted water will be warmed to 55°C.
A. 1
B. 2
C. 3
D. 4
Answers
To solve this problem, we need to consider the energy required to warm the ice cube from -18.5°C to 0°C, the energy required to melt the ice cube, and the energy required to warm the melted water from 0°C to 55°C. Let's calculate the energy for each step and determine the number of ice cubes needed.
Warming the ice cube to 0°C:
The specific heat capacity of ice is 2.05 J/g°C. The temperature change is from -18.5°C to 0°C. Therefore, the energy required to warm the ice cube can be calculated as:
Energy = mass × specific heat capacity × temperature change
Energy = 24 g × 2.05 J/g°C × (0°C - (-18.5°C))
Energy = 24 g × 2.05 J/g°C × 18.5°C = 899.4 J
Melting the ice cube:
The heat of fusion (specific latent heat of fusion) of water is 334 J/g. We need to determine the energy required to melt the ice cube. The mass of the ice cube is 24 g, so the energy required can be calculated as:
Energy = mass × heat of fusion
Energy = 24 g × 334 J/g = 8016 J
Warming the melted water from 0°C to 55°C:
The specific heat capacity of water is 4.184 J/g°C. We need to determine the energy required to warm the melted water from 0°C to 55°C. The mass of the melted water can be calculated by subtracting the mass of the ice cube that melted from the initial mass of the ice cube (24 g).
Mass of melted water = 24 g - 24 g = 0 g (since all the ice melted)
Therefore, no additional energy is required for this step.
Now, let's add up the energy required for each step to determine the total energy needed to cool the coffee from 85°C to 55°C:
Total energy required = Energy to warm the ice cube to 0°C + Energy to melt the ice cube
Total energy required = 899.4 J + 8016 J = 8915.4 J
Given that each ice cube provides 8915.4 J of energy, we can determine the number of ice cubes needed to cool the coffee.
Energy per ice cube = 8915.4 J
Energy required to cool the coffee = Total energy required = 8915.4 J
The number of ice cubes needed = Energy required to cool the coffee / Energy per ice cube
Number of ice cubes needed = 8915.4 J / 8915.4 J = 1
Therefore, you would need to add 1 ice cube to your 355 mL cup of coffee to bring it to 55°C.
The correct answer is A. 1.
A 0.649 g sample containing only K2SO4 (M.M. 174.25) and (NH4)2SO4 (M.M. 132.13) was dissolved in water and treated with Ba(NO3)2 to participate all SO42- as BaSO4 (M.M. 233.38). Find the weight percent of K2SO4 in the sample if 0.977 g of precipitate was formed.
Answers
Based in the data provided, the percentage by mass of K2SO4 is 60.55 %.
What is the mass of K2SO4 in the mixture?The mass of K2SO4 in the mixture is obtained from the data given as follows:
Total mass of sample = 0.649 g
Let the mass of K2SO4 in the mixture be X g
Mass (NH4)SO4 = (0.649 - X )g
Moles of K2SO4 = X g/174.25 g/mol
= 0.00574X mol
Moles of (NH4)2SO4 = (0.649 - X)g / 132.13 g/mol
= (0.00491 - 0.00757X) mol
Total number of moles SO42- ions precipitated = 0.00574X mol + (0.00491 - 0.00757X)mol
= (0.00491-0.00183X) mol
Mole ratio of SO42- ions to Ba2+ ions = 1:1
Thus, moles of Ba2+ ions = (0.00491 - 0.00183X)mol
Moles of BaSO4 precipitated = 0.977 g/233.38 g/mol = 0.00419 moles
1 mole of BaSO4 produces 1 mole of Ba2+ ions
Therefore,
(0.00491 - 0.00183X) mol = 0.00419mol
0.00183X = 0.00491 - 0.00419mol
0.00183X = 0.00072
X = 0.00072/0.00183 = 0.393 g
Mass of K2SO4 = 0.393 g
Percentage by mass of K2SO4 = (0.393/0.649) × 100
Percentage by mass of K2SO4 = 60.55 %
Learn more about percentage by mass at: https://brainly.com/question/26150306
i have an important test coming up!!! i need help with thisss!!!!
Answers
What is the working mechanism in the pH meter? Briefly describe it.
Answers
The pH-sensitive electrode is usually a glass electrode that contains a special type of glass that is sensitive to hydrogen ions (H+). When the electrode comes into contact with a solution, the H+ ions in the solution interact with the glass, generating a small electrical potential difference that is proportional to the pH of the solution.
The reference electrode, on the other hand, is a half-cell that contains a stable reference solution, usually a saturated solution of potassium chloride (KCl) in water. The reference electrode provides a stable reference potential against which the pH-sensitive electrode can be measured.
When the pH-sensitive electrode and the reference electrode are both immersed in the solution, the potential difference between the two electrodes is measured by the pH meter, which then converts the voltage into a pH value using a calibration curve.
In summary, the pH meter measures the electrical potential difference between a pH-sensitive electrode and a reference electrode to determine the pH of a solution.
The valves in the heart open and close to move blood in between heart chambers. O a) three directions O b) two directions O c) four directions d) one direction
Answers
Answer:
im not sure but i think its four directions
Hi,
The valves in the heart open and close to move blood in between heart chambers.
Answer:
d) one direction
How many significant digits are in 89015
Answers
Answer:
Total 5 significant digits.
Explanation:
Significant digits are the numbers that give a meaningful contribution. For example, digit 013 has the 2 significant digits and zero is not a significant digit because digits 1 and 3 give meaningful contribution but digit zero does not value meaningful contribution. Similarly, the 89015 has a total of 5 significant digits and these digits are the 8, 9, 0, 1, and 5.
Express your answers as integers separated by commas.
Answers
Not enough information man
What structural features do you think contribute to a high thermal conductivity?
HURRY PLEASE!!!!
Answers
The structural features which contributes to a high thermal conductivity are the direction of travel of heat and the nature of materials.
What is Thermal conductivity?This is referred to as a measure of its ability to conduct heat or current and it is dependent on some factors such as the nature of the materials.
For example , metals conduct heat and electricity easily because the materials allow free electrons to move between the atoms and also the direction of travel of heat which is towards them is also a factor in this regard.
Read more about Thermal conductivity here https://brainly.com/question/11213835
#SPJ1
can some one help The function of the cell wall in a plant cell is Question 2 options: Allowing material to pass in and out of the cell Uses carbon dioxide, water and energy from the sun to make sugar Breaks sugar down into ATP which the cell can use for energy Provides support and protection for the cell
Answers
Answer:
the protection one
Explanation:
the cell wall acts a barrier
What do all the elements in one row of the periodio fable have in common?
Answers
Answer:
Energy levels
Explanation:
Elements in one row of the periodic table have the same energy levels. A row on the periodic table is the horizontal arrangement of elements. These rows are called periods.
There are 7 periods on the periodic table.
Each elements on a period begins with an atom having one valence electrons and then ending with completely filled orbitals. Elements in the same period are known to have the same electronic shells which is the energy level. The principal quantum number of their electrons is the same.2. 4.6gof X is burnt completelyto produce 6.2g of X oxide (X,O). M (0) = 16 gmol ¹. Calculate the amount of oxygen that reacted in this experiment. [2 MARKS]
[ii] calculate the mass of 1 mole of x.[2mark]
[iii] predict and give a reason explaining the reaction of x2o in water.[1mark]
Answers
As per the given data, 1.6 grams of oxygen reacted in this experiment.
To calculate the amount of oxygen that reacted in the experiment, we need to determine the difference in the mass of X oxide (X,O) formed and the mass of X initially used.
Given:
Mass of X = 4.6 g
Mass of X oxide (X,O) = 6.2 g
To find the amount of oxygen that reacted:
Mass of oxygen = Mass of X oxide - Mass of X
= 6.2 g - 4.6 g
= 1.6 g
Therefore, 1.6 grams of oxygen reacted in this experiment.
Calculate the mass of 1 mole of X:
Given that the mass of X is 4.6 g, we can calculate the molar mass of X by dividing the mass by the number of moles:
Molar mass of X = Mass of X / Number of moles of X
Molar mass of X = 4.6 g / 0.1 mol
Molar mass of X = 46 g/mol
Therefore, the mass of 1 mole of X is 46 grams.
Thus, the answer is 46 grams.
For more details regarding moles, visit:
https://brainly.com/question/30885025
#SPJ1
The chemical formula for lithium phosphide is Li3P. Which best describes this ionic compound?
Lithium ions have 1 positive charge, and phosphorus ions have 3 negative charges.
Lithium ions have 3 positive charges, and phosphorus ions have 1 negative charge.
Lithium ions have 1 negative charge, and phosphorus ions have 3 positive charges.
Lithium ions have 3 negative charges, and phosphorus ions have 1 positive charge.
Answers
Answer:
B) Lithium ions have 1 positive charge, and phosphorus ions have 3 negative charges.
Explanation:
Lithium phosphide is an ionic compound in which lithium ions have 1 positive charge, and phosphorus ions have 3 negative charges. Therefore, option A is correct.
An ionic compound is a type of chemical compound that is composed of ions held together by electrostatic forces of attraction. These compounds are typically formed through the transfer of electrons between atoms, resulting in the formation of positively charged cations and negatively charged anions.
Ionic compounds often form crystal lattice structures due to the strong electrostatic forces between the ions. They tend to have high melting and boiling points.
Learn more about ionic compounds, here:
https://brainly.com/question/30420333
#SPJ6
how many significants are in 54.0047
Answers
Answer:
There are 6
Explanation:
The significant figures in that number are 5 4 0 0 4 7
Hope this helps:)
If 25.82 mL of 0.0500 M NaOH solution are required to reach the equivalence point of an acid-base titration of 40.0 mL of 7-Up, how many moles of NaOH were required?
Answers
If 25.82 mL of 0.0500 M NaOH solution are required to reach the equivalence point of an acid-base titration of 40.0 mL of 7-Up, the number of NaOH required is 0.00126 moles.
What is equivalence point?The point at which chemically identical amounts of reactants are put together is known as the equivalence point in a chemical reaction.
In other words, during titration, it is the point at which the titrant addition is sufficient to totally neutralize the analyte solution. The number of moles of a solution with an unknown concentration is equal to the number of moles of a titrant, or standard solution. Because it is a point where the amount of acid and base required to neutralize a solution is equal, it is often referred to as the stoichiometric point. It should be noted that the acid to base ratio need not be 1:1. The balanced acid-base chemical equation explains this acid-base ratio. For this, indicators might be used, for example, phenolphthalein or methyl orange.
The reaction between citric acid and NaOH is,
H₃C₆H₅O₇(aq) + 3NaOH(aq) → Na₃C₆H₅O₇(aq) + 3H₂O(l)
According to the formula,
M = \(\frac{n}{V}\)
where,
M is the molarity,
n is the number of moles and,
V is the volume(L)
For NaOH;
M = 0.0500 M
V = 25.82ml = 0.02582 l
n = M × V
n = 0.00126 moles
To know more about acid-base titration, visit;
https://brainly.com/question/2728613
#SPJ1
Assume that a film includes repeated scenes showing the trademark Voom on the sports shoes of its attractive adolescent protagonists. Althoughthe film is successful among young audiences, no increase occurs in the sale of Voom shoes. Which of the following hypotheses about this outcome is the most plausible on the basis of the studies cited?
A) Audiences feel uncomfortable because Voom is an unfamiliar brand.
B) Most members of the audience already own a pair of Voom shoes.
C) Audiences are worried by the social implications of these scenes.
D) Audiences are too engrossed in the story to notice the shoes.
Answers
Answer: D
Explanation: Even if the audiance did not have a pair of shoes felt uncomfortable or worried not a lot of people would have noticed. If anyone noticed it would only be about 5% of people so that is how I came to the conclision of D.
Which element would have similar properties to Sulfur? Chlorine O a ob Fluorine Oxygen Nitrogen
Answers
Answer:
sir/ma'am, i know i'm a NOOB at this kind of stuff but i believe it's oxygen.
Explanation:
i can't really remember the answer since it's been a week or so that i done this problem, it's between nitrogen and oxygen, though, i believe it's oxygen.
if ya don't believe me or trust me, then here's the link to help ya:
https://socratic.org/questions/what-elements-would-have-similar-properties-to-sulfur#628367
Cu20(s) + C(s) - 2Cu(s) + CO(g)
To perform this synthesis, the team added 114.2 grams of Cu20 to 11.1 grams of C to form 87.1 grams of Cu.
In this copper synthesis reaction, what is the limiting reagent and the excess reagent?
Answers
Answer:
That means Cu2O is limiting reagent and C is excess reagent
Explanation:
Based on the reaction, 1 mole of Cu2O reacts per mole of C. The ratio of reaction is 1:1.
To solve this question we need to convert the mass of each reactant to moles. The reactant with the lower amount of moles is limiting reactant and the excess reactant is the reactant with the higher number of moles.
Moles Cu2O -Molar mass: 143.09 g/mol-
114.2g Cu2O * (1mol / 143.09g) = 0.798 moles Cu2O
Moles C -Molar mass: 12.01g/mol-
11.1g C * (1mol / 12.01g) = 0.924 moles C
That means Cu2O is limiting reagent and C is excess reagent
C + 2 Cl2 —> CCl4 if 4 moles of CCl4 are produced, how many grams of C were reacted?
Answers
To solve this problem, we need to use the stoichiometry of the chemical equation to determine the number of moles of C reacted, and then convert to grams using the molar mass of carbon.
From the balanced equation, we see that 1 mole of C reacts to form 1 mole of CCl4. Therefore, if 4 moles of CCl4 are produced, then 4 moles of C must have reacted.
To convert moles of C to grams, we need to use the molar mass of carbon, which is 12.01 g/mol. Therefore:
4 moles C x 12.01 g/mol = 48.04 g C
So, 48.04 grams of C were reacted in this chemical reaction to produce 4 moles of CCl4.
To know more about moles , visit :
https://brainly.com/question/26416088
#SPJ1
Which compound has a functional group that contains two oxygen atoms?
Answers
The compound that has a functional group containing two oxygen atoms is peroxide. In addition to peroxides, there are other compounds that contain functional groups with two oxygen atoms. These include carboxylic acids and esters.
Peroxide compounds, such as hydrogen peroxide (H₂O₂) or organic peroxides, have a functional group (-O-O-) where two oxygen atoms are bonded together. This group is responsible for the characteristic properties and reactivity of peroxides.
Carboxylic acids: Carboxylic acids have the functional group -COOH, which consists of a carbonyl group (C=O) and a hydroxyl group (-OH) bonded to the same carbon atom. While carboxylic acids have one oxygen atom from the carbonyl group, the hydroxyl group provides the second oxygen atom.
Esters: Esters have the functional group -COO-, which consists of a carbonyl group (C=O) and an oxygen atom (-O-) bonded to the same carbon atom. This arrangement gives esters two oxygen atoms within their functional group.
Hence, the compounds with functional groups containing two oxygen atoms include peroxides, carboxylic acids, and esters.
Learn more about functional groups here:
https://brainly.com/question/28563874
#SPJ 2
What is the Insight's rating in kilometers per liter?
Answers
Answer:
I don't use this
Explanation:
Match each type of rock with the way it is formed.
pressure and heat
cooling magma
erosion and deposition
cooling lava
intrusive igneous rock
arrowRight
extrusive igneous rock
arrowRight
sedimentary rock
arrowRight
metamorphic rock
Answers
The correct match is as follows:
Pressure and heat - Metamorphic rock
Cooling magma - The Intrusive igneous rock
Cooling lava - The Extrusive igneous rock
Erosion and Deposition - Sedimentary rock
This is because Metamorphic rocks are formed as a result of past existing rocks changing form. If the igneous and sedimentary rocks are exposed to high temperature and pressure, they then become metamorphic rocks.
Intrusive igneous rocks form when magma cools slowly. This process soon results in the formation of large-crystal like structures. Whereas, when exposed to the atmosphere lava cools rather quickly. This faster cooling process forms extrusive igneous rocks. The fast cooling lava creates smaller crystals and a smoother surface.
The sediments that are formed as a result of weathered rocks are usually deposited on the surface of Earth, or at the bottom of rivers and oceans. Over time, sediments collect and form layers over the most recent layer. This leads to the formation of sedimentary rocks.
To learn more about minerals and rocks click below,
https://brainly.com/question/15844293
#SPJ9
Answer:
I believe this is your answer, or wait I know this is your answer
Explanation:
An image of Earth's layer is above.
Which layer is the most dense?
layer A
layer B
layer C
layer D
Answers
Answer:
d
Explanation:
il answer in comments if you brainly me
TiCl4 + O2
What is the predicted product
Answers
Answer: Titanium dioxide
there is concern in health-related government agencies that the american diet contains too much meat, and numerous recommendations have been made urging people to consume more fruit and vegetables. one of the richest sources of vegetable protein is soy, available in many forms. among these is soybean curd, or tofu, which is a staple of many asian diets. chemists have isolated an anticancer agent called genistein from tofu, which may explain the much lower incidence of cancer among people in the far east. a valid lewis structure for genistein is
Answers
Answer:
Explanation:
The aim of this question is to draw the structure of genistein and determine the number of atoms with sp² hybridization in the molecule.
From the image below, we will see the lewis structure of genistein. From the image, the blue asterisk atoms are sp² hybridized and the red marked atoms are sp³ hybridized.
We will also notice that all the carbon atoms contain 3 σ-bonds with no lone pair of electrons.
Using the knowledge of Valence shell electron repulsion theory (VSEPR), the above-mentioned carbon atom is said to be sp²hybridized.
Also, the oxygen atoms which are doubly bounded contains 1 σ-bond and 2 lone pair electrons. These oxygen atoms are also sp² hybridized.
Finally, the singly bonded oxygen atom is composed of 2 σ-bonds and 2 lone pair electrons. This makes it to be sp³ hybridized.
Altogether, we have a total of 16 sp² hybridized atoms and 4 sp³ hybridized atoms.
Arrange the following bonds in order of increasing polarity. (a) H — F, F — F, H — H, H — I
Answers
Answer:H-F>F-F>H-I>H-H
Explanation:The polarity of a bond is determined by the difference in electronegativity between the two atoms of the bond. Electronegativity is a measure of an atom's ability to attract electrons to it in a chemical bond. The greater the difference in electronegativity between two atoms, the more polar the bond.
The electronegativity values for the atoms:
H: 2.2
F: 3.98
I: 2.66
Which of the following elements is going to be the most reactive and why? Nitrogen or Oxygen?
A) Nitrogen because it has the strongest attractive force and the largest
electronegativity.
B) Oxygen because it has the weakest attractive force and the largest
electronegativity.
C) Oxygen because it has the strongest attractive force and the largest
electronegativity
D) Nitrogen because it has the weakest attractive force and the largest
electronegativity.
Answers
Answer:
(C) Oxygen because it has the strongest attractive force and the largest
electronegativity
Explanation:
Oxygen will be most reactive
configuration = \(1s^22s^22p^4\)
As oxygen need only two electrons to complete its octet.
Oxygen will have stronger force than nitrogen as it will tend to pull electrons more to complete its octet. Also along the period electronegativity increases so oxygen has higher electronegativity than nitrogen
Question 2 of 10
What is the percent yield of a reaction?
The amount of product obtained x 100
amount possible
B. The amount of product actually obtained in a reaction
C. The amount of product that is possible from a reaction
D. The difference between measured and calculated amounts
A.
Answers
Answer:
c
Explanation:
PLEASE ANSWER ASAP
How many representative particles are 2.62g of a molecular compound with a molar mass of 273g?
(MUST SHOW ALL WORK FOR CREDIT)
Answers
There are 5.79 x 10²¹ representative particles in 2.62g of the molecular compound.
Determine the number of moles of the molecular compound.
We can use the formula:
moles = mass / molar mass
where mass is 2.62g and molar mass is 273g/mol.
moles = 2.62g / 273g/mol
moles = 0.00961 mol
Use Avogadro's number to convert from moles to representative particles.
We can use the formula:
representative particles = moles x Avogadro's number
where Avogadro's number is 6.022 x 10²³.
representative particles = 0.00961 mol x 6.022 x 10²³
representative particles = 5.79 x 10²¹
To know more about molar mass, here
brainly.com/question/22997914
#SPJ4