what products are formed when each acetal is hydrolzed with aqueous acid
Answers
When each acetal is hydrolyzed with aqueous acid, reaction the main answer is that the products formed are an aldehyde or a ketone, as well as an alcohol. Here's an
:An acetal is a functional group with the structure R1R2C(OR3)2, where R1, R2, and R3 can be either hydrogen atoms or organic functional groups. Hydrolysis of an acetal with aqueous acid involves the breaking of the carbon-oxygen bond of the OR3 group, resulting in the formation of an aldehyde or ketone, as well as an alcohol.
The reaction mechanism of acetal hydrolysis is nucleophilic substitution, whereby a water molecule attacks the carbon atom of the acetal group, leading to the formation of an intermediate that undergoes hydrolysis. The overall reaction can be represented as: R1R2C(OR3)2 + H2O ⟶ R1R2COH + R3OHHere, R1R2C(OR3)2 represents the acetal, and R1R2COH and R3OH represent the aldehyde or ketone and alcohol products, respectively.
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Related Questions
I really need help with this ASAP
Answers
Answer:
1) Reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.
2) By collecting the hydrogen gas that is produced over water or in a syringe, rate graphs can be produced. The volume of gas produced and the time taken need to be recorded. The rate of the same reaction could be monitored by measuring the change in the mass of reactants as they react to form products.
How many moles of sodium cyanide (NaCN) would be needed to produce
2.1 moles of sodium sulfate (Na2SO4)?
H2SO4 + 2NaCN → 2HCN + Na2SO4
Answers
Answer:
4.2 moles of sodium cyanide (NaCN) would be needed to produce 2.1 moles of sodium sulfate (Na₂SO₄).
Explanation:
The balanced reaction is:
H₂SO₄ + 2 NaCN → 2 HCN + Na₂SO₄
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound are necessary:
H₂SO₄: 1 mole NaCN: 2 moles HCN: 2 moles Na₂SO₄: 1 moleThen you can apply the following rule of three: if by stoichiometry to produce 1 mole of sodium sulfate 2 moles of sodium cyanide are necessary, then to produce 2.1 moles of sodium sulfate how many moles of sodium cyanide are necessary?
\(amount of moles of sodium cyanide=\frac{2.1 moles of sodium sulfate*2 moles of sodium cyanide }{1 mole of sodium sulfate}\)
amount of moles of sodium cyanide= 4.2 moles
4.2 moles of sodium cyanide (NaCN) would be needed to produce 2.1 moles of sodium sulfate (Na₂SO₄).
Why is BF3 non-polar?
Arrange the following bonds in terms of increasing polarity, beginning with the lowest polarity (Show the electronegativities for full marks) [5 Marks] :
a) Ni-P
b) Si-Cl
c) Al-Cl
d) Cu-Br
e) Pb-I
Answers
Due to its very symmetric structure, BF3 (Boron Trifluoride) is non-polar. Because of its triangular planar structure, the three BF bonds' individual dipole moments cancel out, bringing the compound's overall dipole moment to zero.
Al-Cl, Si-Cl, Ni-P, Cu-Br
The difference in the electronegativity of the components determines the polarity of a bond. The propensity of an atom to gain an electron and form an anion or to have an electron nearby when in a covalent bond (sharing electrons) is known as this attribute.
The atom will find it more challenging to attract an electron the bigger the atomic radius since the attractive force will be less powerful. In the periodic table, the electronegativity rises from left to right and from bottom to top.
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what volume of a solution is needed to dissolve 1.0 mol of koh to make a solution whose ph is 13.55?
Answers
The volume of the solution is needed to be dissolve the 1.0 mol of the KOH to make the solution whose pH is the 13.55 is 2.8 L.
The pOH is expressed as :
pH + pOH = 14
pH = 13.55
13.55 + pOH = 14
pOH = 14 - 13.55
pOH = 0.45
The concentration of the OH⁻ is as :
pOH = - log [OH⁻]
pOH = 0.45
0.45 = - Log [OH⁻]
- 0.45 = Log [OH⁻]
[OH⁻] = 0.355 M
The molarity is as :
Molarity = mole /Volume
Where,
The molarity of the solution is 0.335 M
The moles of the solution is 1 mol
Volume = mole /Molarity
Volume = 1 / 0.355 M
Volume = 2.8 L
The volume of the KOH solution is 2.8 L.
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Read the excerpt from A History of Women’s Suffrage by Stanton, Anthony, and Gage.
Another writer asserts that the tyranny of man over woman has its roots, after all, in his nobler feelings; his love, his chivalry, and his desire to protect woman in the barbarous periods of pillage, lust, and war. But wherever the roots may be traced, the results at this hour are equally disastrous to woman. Her best interests and happiness do not seem to have been consulted in the arrangements made for her protection. She has been bought and sold, caressed and crucified at the will and pleasure of her master. But if a chivalrous desire to protect woman has always been the mainspring of man's dominion over her, it should have prompted him to place in her hands the same weapons of defense he has found to be most effective against wrong and oppression.
Which statement paraphrases the authors’ argument?
Throughout history, men have strived to protect women through chivalrous action and guardianship.
Women have always been subservient to men because they have needed protection during war and pillage.
Men have not been successful protecting women because they have not given women the power to protect themselves.
During times of war, men and women rely on one another for defense, and they each have weapons for battle.
Answers
Answer:
C
Explanation:
Took the test
In her book A Vindication of the Rights of Women, British author Mary Wollstonecraft advocated that women should be treated with the same respect and decency as men, particularly when it comes to education. Thus, option C is correct.
What Women’s Suffrage by Stanton, Anthony, and Gage?A Vindication of the Rights of Woman (1792), a groundbreaking feminist text, asserts that girls should be given the same privileges as males.
So that they might become outstanding husbands, mothers, and laborers in addition to being educated to be frivolous and inept by the educational system.
Women should be given the same opportunities as men, and women share the same capacity for reasoning at birth. Women should have the same rights to influence, expertise, and power in society as men do.
Therefore, Men have failed in their attempts to safeguard women because they have not given them the means to do so.
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Write the line-bond formulas for the following: Hexane cyclohexane Cyclopropane butane
Answers
The line-bond formulas for Hexane, cyclohexane, Cyclopropane, and butane are shown, with each line representing a single bond between two carbon atoms.
Here are the line-bond formulas for Hexane, cyclohexane, Cyclopropane, and butane:
Hexane:
H H H
| | |
C - C - C - C - C
| | | |
H H H H
Cyclohexane:
H H H
| | |
C C C
| | |
H H H
Cyclopropane:
H H
| |
C - C - C
| |
H H
Butane:
H H H
| | |
C - C - C - C
| |
H H
In line-bond formulas, each line represents a single bond between two carbon atoms. Hydrogen atoms are not explicitly shown, but they are assumed to be attached to each carbon atom with a single bond.
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the half life of N is 25 minutes. how long will it take 80% of the sample to decay
Answers
Explanation:
Nuclear half-life expresses the time required for half of a sample to undergo radioactive decay. Exponential decay can be expressed mathematically like this:
A
(
t
)
=
A
0
⋅
(
1
2
)
t
t
1/2
(1), where
A
(
t
)
- the amount left after t years;
A
0
- the initial quantity of the substance that will undergo decay;
t
1/2
- the half-life of the decaying quantity.
So, if a problem asks you to calculate an element's half-life, it must provide information about the initial mass, the quantity left after radioactive decay, and the time it took that sample to reach its post-decay value.
Let's say you have a radioactive isotope that undergoes radioactive decay. It started from a mass of 67.0 g and it took 98 years for it to reach 0.01 g. Here's how you would determine its half-life:
Starting from (1), we know that
0.01
=
67.0
⋅
(
1
2
)
98.0
t
1/2
→
0.01
67.0
=
0.000149
=
(
1
2
)
98.0
t
1/2
98.0
t
1/2
=
log
0.5
(
0.000149
)
=
12.7
Therefore, its half-life is
t
1/2
=
98.0
12.7
=
7.72
years
.
So, the initial mass gets halved every 7.72 years.
Sometimes, if the numbers allow it, you can work backwards to determine an element's half-life. Let's say you started with 100 g and ended up with 25 g after 1,000 years.
In this case, since 25 represents 1/4th of 100, two hal-life cycles must have passed in 1,000 years, since
100.0
2
=
50.0
g
after the first
t
1/2
,
50.0
2
=
25.0
g
after another
t
1/2
.
So,
2
⋅
t
1/2
=
1000
→
t
1/2
=
1000
2
=
500
years
.
Suppose that some hydrochloric acid is placed in a beaker and a pH meter is set into the solution. It reads pH 1.5.
(a) Describe how the pH will change when a small amount of NaOH solution is added drop by drop to the acid. t
(b) Explain why the pH will change.
Answers
Answer:
A) The pH will increase.
B)The pH will change because the solution is being neutralized via a basic solution being added to an acid.
Help Please!!! HURRY!!!!! NO SPAM!!!!!!!!!!
3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O
In the above equation how many grams of water can be made when 8 grams of HNO3 are consumed?
Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0
Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:
Element Molar Mass
Hydrogen 1
Nitrogen 14
Copper 63.5
Oxygen 16
Answers
Answer:
its for use full
In order for the reaction 2Al(s) + 6HCl(aq) →2AlCl3(aq) + 3H2(g) to occur, which of the following must be true?
a. Al must be above Cl on the activity series.
b. Al must be above H on the activity series.
c. Heat must be supplied for the reaction.
d. AlCl3 must be a precipitate.
Answers
Answer:
Option b) Al must be above H on the activity series.
may be this is the right answer .
Convert 1.4 x 1024 molecules of H2O to grams of H20.
Answers
Answer:
41.8 g of water.
Explanation:
To solve this, we introduce the concept of mol.
1 mol of anything contains 6.02×10²³ particles.
In this case, we talk about molecules of water.
Molecular weigh is 18 g/mol which indicates that 1 mol of water weighs 18 g.
So let's do the conversion
(18 g of water / 6.02×10²³ 1 mol of molecules) . 1.4×10²⁴ molecules = 41.8 g
When determining whether a chemical change has taken place, you observe and look for several indicators. Which would be considered an indication that a chemical reaction has taken place?
a Heat is given off.
b Solid melts.
c An object has changed shape.
d Substance dissolved.
Answers
A chemical change occurs when there is a bond breaking or bond making. A phase change, change in phase and or change in shape does not make a chemical change. A chemical change can be indicated by the heat given off by a reaction or change. Thus, option a is correct.
What is chemical change?There are broadly two types of change occurs for a substance namely chemical change or physical change. A physical change is a change in state or phase involves no formation products or breaking of bonds. For example melting of a solid to liquid and boiling of liquid to gas etc.
In a chemical change there makes a bond breaking or making to form a new product. All chemical reactions such as combination reactions, decomposition, displacements etc. are chemical changes.
Every chemical change is associated with an enthalpy of heat energy that is absorbed or released by the system. Thus heat given off is an indication of a chemical change. Hence, option A is correct.
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Suppose you want to search for high-redshift star-forming galaxies using a telescope equipped with a spectrograph able to measure the entire optical spectrum (400-700 nm). Star-forming galaxies contain copious hydrogen gas, from which stars form. Some of this gas will be ionized by the newly-formed stars; the spectra of star-forming galaxies there exhibit bright hydrogen lines in emission. Light from the newly-formed stars is absorbed by neutral hydrogen gas as it passes through the galaxy. a) If you wish to search for Lyman-a emitting galaxies, over what redshift range can you find such galaxies? [3 points] b) If you detect only one line, you cannot be certain that this line is the Lyman-a line, and hence that the galaxy is indeed at the computed redshift. Assuming you can also observe in the infrared (wavelengths >700 nm), how can you change your strategy to make sure that the line you detect is really the Lyman-a line? Give three examples of how you can increase confidence in the correct identification of the Lyman-a line considering only hydrogen gas. [3 points] c) Limited only to optical wavelengths and considering only hydrogen gas, what strategy should you adopt to be certain that the line you detect is really the Lyman-a line while maximizing the redshift range over which you find galaxies? With this strategy, over what redshift range can you find star-forming galaxies? Justify through appropriate computations and reasoning that this is in fact the optimal strategy for maximizing the redshift range of your search. [10 points] d) Apart form hydrogen emission lines, star-forming galaxies also usually exhibit bright [OIII] forbidden lines. Why can such lines be seen from interstellar gas but not the Earth's atmosphere or in the laboratory? [4 points]
Answers
a) The maximum observable range of redshifts that produces Lyman-alpha line is 0 ≤ z ≤ 10.6
b) i) identifying the galaxy with a radio source, ii) looking for other Lyman lines, iii) a coincidence with a continuum break
c)The maximum redshift range over which galaxies can be found using this strategy is z = 7 to z = 15.5.
d)Earth's atmosphere absorbs the radiation, and the laboratory conditions are not the same as interstellar conditions.
a) Lyman-alpha line is produced by the hydrogen atoms that have electrons that are in the ground state being raised to the first excited state. Over a certain range of redshifts, the Lyman-alpha line is redshifted to longer wavelengths that are observable by an optical spectrograph. The maximum observable range of redshifts that produces Lyman-alpha line is 0 ≤ z ≤ 10.6 (depending on the exact details of the galaxy's emission profile).
b) Observing the galaxy in the infrared can help in the identification of the Lyman-alpha line as it is shifted to longer wavelengths. Three ways to increase confidence in the correct identification of the Lyman-alpha line are:
i) identifying the galaxy with a radio source, ii) looking for other Lyman lines, iii) a coincidence with a continuum break.
c) The strategy that needs to be adopted is to look for the Lyman limit, which is the point at which the spectrum is cut off by the absorption of all hydrogen in the galaxy. To be certain that the line you detect is the Lyman-alpha line, you need to look for a decrement in the flux of the galaxy at wavelengths shorter than the line and a decrement in the flux at wavelengths longer than the line. This is because the Lyman limit will be shifted to longer wavelengths at higher redshifts, so to maximize the redshift range over which galaxies can be found, you need to search for the Lyman limit at the longest wavelength possible. The maximum redshift range over which galaxies can be found using this strategy is z = 7 to z = 15.5.
d) The reason why such lines can be seen from interstellar gas but not the Earth's atmosphere or in the laboratory is that the Earth's atmosphere absorbs the radiation, and the laboratory conditions are not the same as interstellar conditions. The forbidden lines from the interstellar gas are not affected by dust absorption because they are produced in regions where dust is not present.
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The solar system is the collective name for the sun, eight planets, and their moons. The
blank is the center of the solar system, and everything orbits around it.
Answers
Answer:
The sun
Explanation:
The sun is the center of the solar system and all the planets orbit around it (moons orbit around respective planets which orbit around the sun)
Answer:
The Sun.
Explanation:
☀️
The Sun is like the “power house” of the solar system, we rely on it, and everything orbits around it.
37. How many grams does 4.00 moles of H20 weigh?
Answers
Answer:
72 g
Explanation:
n=m/mr
m=n*mr
=4*(2+16)
+72 g
if 250. l of hydrogen gas are used to reduce copper (ii) oxide at stp, what mass of copper is to be expected?
Answers
The expected mass of copper produced is approximately 357.13 grams. To determine the mass of copper produced when hydrogen gas reduces copper(II) oxide, we need to use the balanced chemical equation and the stoichiometry of the reaction.
The balanced chemical equation for the reaction between hydrogen gas (H2) and copper(II) oxide (CuO) is:
2 H2(g) + CuO(s) → Cu(s) + H2O(g)
From the equation, we can see that 2 moles of hydrogen gas are required to produce 1 mole of copper. Therefore, we need to convert the volume of hydrogen gas to moles, and then use the mole ratio to find the moles of copper.
First, let's convert the volume of hydrogen gas to moles using the ideal gas law:
PV = nRT
Where:
P = pressure (STP is 1 atm)
V = volume of gas (250 L)
n = number of moles of gas
R = ideal gas constant (0.0821 L·atm/(mol·K))
T = temperature (STP is 273.15 K)
Plugging in the values:
(1 atm)(250 L) = n(0.0821 L·atm/(mol·K))(273.15 K)
n = (1 atm)(250 L) / (0.0821 L·atm/(mol·K))(273.15 K)
n ≈ 11.24 moles of H2
According to the stoichiometry of the balanced equation, 2 moles of H2 react to produce 1 mole of Cu. Therefore, the moles of Cu produced will be half of the moles of H2 used:
moles of Cu = 11.24 moles H2 / 2
moles of Cu ≈ 5.62 moles
Finally, we can calculate the mass of copper using the molar mass of copper (Cu):
mass of Cu = moles of Cu × molar mass of Cu
mass of Cu = 5.62 moles × 63.55 g/mol
mass of Cu ≈ 357.13 g
Therefore, the expected mass of copper produced is approximately 357.13 grams.
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What is the molarity of a solution in which 25g NaCl in a 2.00 L solution?
Answers
Mass of sodium :- 23 grams
Mass of Chlorine :- 35.5 grams
Mass of NaCl :- 58.5 grams
mass given :- 25 grams
moles :- 0.432 ( given mass/ ionic mass)
\(molarity = \frac{moles}{vol} \\ molarity = \frac{0.432}{2} \\ molarity = 0.216 \: mole{l}^{ - 1} or \: molar\)
A liquid has a density of 0.70g/ml. Find the mass of the liquid which can be put
into a beaker holding 130mL.
Answers
Answer:
The answer is
91 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density of liquid = 0.70 g/mL
volume = 130 mL
The mass is
mass = 0.7 × 130
We have the final answer as
91 gHope this helps you
NEED HELP NOW
Which item does not contain a noble gas?
neon sign
mp3 player
flash camera
helium balloon
Answers
Answer:
may be mp3 player......
Answer:
mp3 player
Explanation:
Neon sign contains Neon
Flash camera contains Xenon
Helium balloon contains Helium
What does displacement reaction tell you about the reactivity of the 2 metals involved?
Answers
it tells me that one element is more reactive than the other
Explanation:
using the reactivity series. the element that come above is the most reactive e.g
potassium
sodium
calcium
magnesium....
potassium is more reactive than sodium and the following below
calcium is more reactive than magnesium since it is below it in the reactivity series.
CONCLUSION, reactivity decreases down the reactivity series and increases up the reactivity series. the example i gave is part of the reactivity series of cations but there is also for anions
derived mammalian characteristics include all of the following except _______.
Answers
While there are several derived mammalian characteristics that define this group of animals, there are also some traits that are not considered unique to mammals. Egg-laying and the lack of a diaphragm in some mammals are examples of traits that are not derived mammalian characteristics.
Derived mammalian characteristics are those traits that distinguish mammals from other animal groups. Some of the derived mammalian characteristics include the presence of mammary glands, hair, three middle ear bones, and a neocortex. These traits are unique to mammals and have been developed throughout evolution to help them survive in their environments. However, there are some traits that are not considered derived mammalian characteristics.
One of the traits that is not considered a derived mammalian characteristic is egg-laying. While most mammals give birth to live young, there are some mammals such as the platypus and echidna that lay eggs. This trait is not unique to mammals and is also seen in other animal groups such as reptiles and birds.
Another trait that is not considered a derived mammalian characteristic is the lack of a diaphragm in some mammals. While most mammals have a muscular sheet called the diaphragm that separates the thoracic and abdominal cavities and aids in breathing, some mammals such as sloths and armadillos lack a fully developed diaphragm.
In conclusion, while there are several derived mammalian characteristics that define this group of animals, there are also some traits that are not considered unique to mammals. Egg-laying and the lack of a diaphragm in some mammals are examples of traits that are not derived mammalian characteristics.
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2. True or false? The complete ionic equation contains only those substances directly involved in
reactions in aqueous solutions.
True or
False
Answers
An equation in chemistry, particularly a chemical equation, refers to a written description of a chemical reaction.
Correct answer is : True.
A chemical equation reflects the substance composition of the reacting substance and the substance structure of the products produced by a reaction. The full ionic equation reflects the full formation and splitting of ions in a chemical reaction when all ions in a reaction are replaced with their respective ions that make them up in solution.
It is true that the full ionic equation includes only those substances that are directly involved in reactions in aqueous solutions, as it focuses only on the ions that change and participate in the reaction taking place. It means, the complete ionic equation separates the ions present in the equation into their respective aqueous state by listing out all the ions present on the reactant and product side of the equation.
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What is occuring when reactants are mixed ad heated and liquid collects in the side of the apparatus for esterification
Answers
When reactants are mixed and heated in an esterification reaction, a liquid product is formed along with other byproducts.
When reactants are mixed and heated in an esterification reaction, a liquid product is formed along with other byproducts. Esterification is a chemical reaction between an alcohol and a carboxylic acid, often catalyzed by an acid catalyst such as sulfuric acid. The reaction produces an ester and water as byproducts.
During the reaction, the alcohol and carboxylic acid are mixed together and heated. The acid catalyst is added to speed up the reaction. As the reaction proceeds, the ester and water are formed. The ester is a liquid, while water is a gas at the reaction temperature.
The liquid product that collects in the side of the apparatus is the ester that is being produced. This liquid can be separated from the reaction mixture and purified using various techniques, such as distillation or extraction. The byproduct water can also be removed by distillation or other means. The ester that is produced can have a wide range of applications, such as in the production of perfumes, flavorings, and plastics.
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what is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two don't actively share an electron? group of answer choices hydrogen bond ionic bond disulfide bond hydrophobic bond covalent bond
Answers
The weak bond between the hydrogen atom of one molecule and the nitrogen atom of another molecule, where the two don't actively share an electron, is called hydrogen bond. Option A is correct.
A hydrogen bond is a type of intermolecular attraction that occurs when a hydrogen atom, already covalently bonded to one electronegative atom, interacts with another electronegative atom.
In this case, the hydrogen is bonded to a highly electronegative nitrogen atom, creating a partially positive charge on the hydrogen and a partially negative charge on the nitrogen, allowing for electrostatic attraction between the two molecules.
Hydrogen bonds are relatively weak compared to covalent bonds, but they play a critical role in many biological and chemical processes. For example, hydrogen bonds help hold together the two strands of DNA, which is critical for the proper functioning of genetic information.
Hence, A. is the correct option.
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--The given question is incomplete, the complete question is
"What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two don't actively share an electron? group of answer choices A) hydrogen bond B) ionic bond C) disulfide bond D) hydrophobic bond E) covalent bond."--
Which of the following is a qualitative physical property?
a. Alcohol is toxic to the liver
b. Aluminum reacts with oxygen to form aluminum oxide
c. Carbon is a solid black powder
d. Hydrogen’s boiling point is -259.9 degrees Celsius
Answers
Answer:
c
Explanation:
the rest are chemical properties
if 0.8 moles of zen are used,how many moles of HCL are required?
Answers
Answer:
1) 1.6 moles of HCl
Explanation:
1) 1.6 moles of HCl
2) 7.0 moles of HCl
3) 2.4 moles of hydrogen
4) 0.96 moles of HCl
Explanation:
The balanced chemical equation is:
According to stoichiometry :
1 mole of require = 2 moles of
0.8 moles of will require= of
3.5 moles of will require= of
According to stoichiometry :
2 moles of produce = 1 mole of
4.8 moles of will require= of
According to stoichiometry :
1 mole of are produced by = 2 moles of
0.48 moles of are produced by = of
Amino acids that are usually positive, i.e. Protonated, at physiological pH
Answers
There are several amino acids that are usually positive, or protonated, at physiological pH, which is around 7.4. These include histidine, lysine, and arginine.
Histidine has a side chain with a pKa of approximately 6.0, which means that at physiological pH, about half of the histidine molecules will be protonated and carry a positive charge. Lysine and arginine have side chains with even higher pKa values, around 10.8 and 12.5, respectively. As a result, almost all of the lysine and arginine molecules in a physiological environment will be protonated and positively charged. These positively charged amino acids play important roles in protein structure and function, as well as in enzyme catalysis and ion transport across cell membranes.
Amino acids that are usually positive or protonated at physiological pH (around 7.4) are lysine, arginine, and histidine. These amino acids contain basic side chains which can accept protons, making them positively charged under physiological conditions.
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Why are there 8 elements in the 3rd stage in a periodic table ?
Answers
Answer:
PLEASE MARK ME AS THE BRAINLIEST
Explanation:
According to the 2n2 rule, the maximum number of electrons in the third period = 2 x (3)2 = 18. But, the last shell cannot accommodate more than 8 electrons so, the number of electrons in third period is 8. Hence, the number of elements is also 8.
There is a different Safety Data Sheet for every chemical.
Select one:
O True
o False
Answers
Answer:
True
Explanation:
This is true because every chemical reacts differently
The ink of some permanent markers is soluble in alcohol but not in water.Can water be used to remove stains from these permanent markers?If not what can be used to remove them.
Answers
Answer:
See the answer below
Explanation:
No, water cannot be used to remove stains from the permanent makers. However, alcohol can be used.
Since the inks of permanent markers are insoluble in water, trying to clean a stain created by a permanent marker with water would be a waste of effort. Only alcohols can be used to successfully remove the stain because the inks will dissolve in the alcohols.