xà phòng hóa hoàn toàn 66,6 gam hỗn hợp 2 este HCOOC2H5 và CH3COOCH3 bằng dung dịch NaOH thu được hỗn hợp X gồm 2 ancol. Đun nóng hỗn hợp X với H2SO4 đặc ở 140 độ C sau phản ứng xảy ra hoàn toàn thu được m gam nước. Giá trị của m

Answers

Answer 1

Answer:

IS THIS EVEN ENGLISH YES

Explanation:


Related Questions

In a separate maddyase experiment using (Et)-10nM, the reaction velocity is measured as 3uMS. What is the substrate concentration used in the experiment

Answers

Answer: hello your question has some missing data attached below is the missing data

Applying the Michaelis-Menten Equation

An enzyme is found that catalyzes the reaction X ⇋ Y Researchers find that kcat for this enzyme is 600s^-1 and carry out several additional experiments.

answer :

substrate concentration [ x ] = 10⁻⁵ M

Explanation:

Given data:

[Et ] = 10 * 10⁻⁹ M ,  

Reaction velocity ( V₀ ) = 3* 10⁻⁶ Ms⁻¹

applying Michaelis-Menten  Equation

= 3* 10⁻⁶ = [tex]\frac{600 *10*10^{-9} * (X) }{10^{-5} + (X) }[/tex]  ,    

= ( 3 * 10⁻⁶ )( x ) + ( 3 * 10⁻¹¹ ) = ( 6 * 10⁻⁶ ) ( x )

hence the substrate concentration [ x ] = 10⁻⁵ M

A child is suffering from fever but the doctor cannot immediately pinpoint the ailment on the basis of this one symptom. Explain why. Also mention another two such general symptoms.​

Answers

the child can also have sore and or maybe stomach problems. it can be indigestion

so there are various conditions one can go through and this may take time for a doctor to discover or bring to light the medical condition that the person I'd goin thru

Explanation:

please notify me if I'm incorrect

Which of the following statements about facilitated diffusion is true?

Gated proteins control the rate of diffusion.

Molecules move up the concentration gradient.

ATP is required to move molecules through the protein channels.

Molecules move from an area of low to high concentration.

Answers

Gated proteins control the rate of diffusion

Which type of plate boundary would be most likely to lead to above-ground volcanic activity?

A . Subduction
B .divergent
C.collisional
D . Transform

Answers

Answer:

A.Subduction

Explanation:

In a subduction zone, one plate slides beneath another. This leads to friction that can melt the crust and result in volcanic activity

Though plants, fungi, and prokaryotes all have cell walls, we place them in different taxa. Which of these observations comes closest to explaining the basis for placing these organisms in different taxa, well before relevant data from molecular systematics became available?

Answers

Answer:

Due to other differences.

Explanation:

The plants, fungi, and prokaryotes all have cell walls, we place them in different taxa because of the other differences such as mobility, mode of nutrition etc. Plants and fungi are not mobile means can not move from one place to another whereas prokaryotes are mobile. Fungi and prokaryotes are heterotrophs means that feed on other organism whereas plants are autotrophs means make their own food. There is also difference in their cell wall i.e. the cell of plants is composed of cellulose, the cell wall of prokaryotes especially bacteria is composed of peptidoglycans and the cell wall of fungi is composed of chitin.

The blood is injected with a special dye that stains the areas where it passes through. Where in the brain and spinal cord would you expect to see the stain?

Answers

Answer:

脑循环是特殊区域循环的最重要组成部分。例如人脑的耗氧量约为全身耗氧量的1/5,人脑血流量约占全部心输出量的13%~15%。充足的脑血流量是lanation:

awncer the question plz awncer soon its about biology if any one knows the awncer reply me do it on a paper and send me plz if u can if not type and send plz​

Answers

Answer:

Blood is filtered by glomerulus ... cannot see full diagram.

Urine flows to the bladder through the ureter which is Part N.

Blood is carried into the kidney through by the renal artery which is Part O.

oil-rich countries in the middle east cover about 4% of earth's total land area but posses about 48% of the world's known oil reserves. what is the main reason for high concentration of reserves in this part of the world?

Answers

The correct answer is A. Geological processes.

Explanation

Oil is a hydrocarbon of fossil origin by geological processes that transforms large amounts of organic matter deposited on anoxic bottoms of seas or lake areas of the geological past, which were later covered by heavy layers of sediment. This causes organic materials to be transformed into oil by the heat and pressure of the upper layers. However, this phenomenon does not occur in all parts of the earth because in some, as in the case of the Middle East, there were large amounts of organic matter that became an oil reserve. So the correct answer is A.

After photosynthesis, how will producers get their energy? Producers receive glucose from the intake of oxygen. Producers will release glucose into the atmosphere, feeding the ecosystem. Producers will create glucose, which is the primary source of food. Producers will receive glucose directly from any rainfall that occurs.

Answers

Answer:

After photosynthesis (Producers will create glucose, which is the primary source of food)

Explanation:

The biotic component of an ecosystem is made up of all living organisms in it. These organisms are divided into two main groups according to the way they feed:

--> Producers (autotrophs) and

--> Heterotrophs.

Producers are organisms that are able to use sunlight or chemical energy to manufacture their own food (glucose) from simple inorganic substances. This process is known as photosynthesis. Producers include all green plants, photosynthetic protists and some bacteria

Producers extract inorganic nutrients and chemical energy from their non-living environment, that is, from the abiotic component of the ecosystem. Since autotrophs are the only organisms that can produce food in an ecosystem, they are also known as PRIMARY FOOD PRODUCERS.

PRODUCERS use some of the food they produce for their activities and building their body tissues (growth). The rest is stored in various parts of the body.

Answer: Its C,  Producers will create glucose, which is the primary source of food.

Explanation: The person above me is right and I also got it right on the test :) hope this helps.

What is not an issue regarding DNA identification?
(A) It is not very reliable
(B) Having databases of millions of DNA profiles can result in more incorrect coincidental matches with partial samples
(C) There is disagreement about whose DNA should be included in the database
(D) Private information related to peoples genetic makeup could get out, which could result in discrimination against them on that basis

Answers

Answer:

(A) It is not very reliable

Explanation:

Having a database would cause lots of issues and disagreements

Difference between Acute Disease & Chronic Disease

NO SPAM​

Answers

Answer:

Acute disease develop suddenly and last a short time while chronic disease develop slowly and last for an extended period of time.

Explanation:

Acute disease come rapidly and are accompanied by symptoms that require short term care and therefore get better once treated.

chronic disease are slower to develop and may progress over time hence have many warning signs or no signs .

PLEASE HELP MAX POINTS AND BRAINLIEST
Which of the following statements best proves that the law of conservation of mass is obeyed during photosynthesis?

a. The starting total number of oxygen atoms in carbon dioxide is equal to the ending total number of oxygen atoms in glucose.

b. The starting total number of oxygen atoms in carbon dioxide gas is equal to the ending total number of oxygen atoms in glucose and oxygen.

c. The total mass of glucose and oxygen formed from photosyntheesis is equal to the total mass of carbon dioxide and water used up during the reaction.

d. The total mass of glucose and carbon dioxide formed from photosynthesis is equal to the total mass of oxygen and water used up during the reaction.

Answers

c. The total mass of glucose and oxygen formed from photosyntheesis is equal to the total mass of carbon dioxide and water used up during the reaction. (right answer i believe)

The total mass of glucose and oxygen formed from photosyntheesis is equal to the total mass of carbon dioxide and water used up during the reaction.

The reaction is given by.

CO_2+H_2O—⟩C_6H_12O_6+O_2

what is cell differentiation?

Answers

Answer:

The process through which a cell transforms from one cell type to another is known as cellular differentiation. In most cases, the cell transforms into a more specialized form. As a multicellular organism develops from a basic zygote to a complex system of tissues and cell types, it undergoes many stages of differentiation.

OAmalOHopeO

Which best illustrates the result of the process of meiosis?
A pea plant has the same flower color as its parent plants.
A daughter looks different from both her mother and her father.
A cheetah cub has very similar fur to its mother.
A Labrador puppy looks exactly like its father.

Answers

Answer:

B. A daughter looks different from both her mother and her father.

Explanation:

A daughter looking different from both her mother and father illustrates the process of meiosis because the cells produced are non-identical to the original cells.  

Answer:

B) A daughter looks different from both her mother and her father.

Explanation:

100% on Edge

describe in detail how enzymes function using pectinase as an example

Answers

Answer:

Pectinase is an enzyme that breaks down pectin, a polysaccharide found in plant cell walls. Therefore, pectinase enzymes are commonly used in processes involving the degradation of plant materials, such as speeding up the extraction of fruit juice from fruit, including apples and sapota

what are mendelian genetic used for

Answers

Answer:

Mendel first observed the different patterns of gene segregation for selected traits in garden peas and was able to determine probabilities of recurrence of a trait for subsequent generations and analyses of large families with many affected individuals can be used to determine whether a disease-associated gene is located on an autosome or on a sex chromosome, and whether the related disease phenotype is dominant or recessive.

HELPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!! All of the following cause mechanical weathering EXCEPT ____. a. ice c. burrowing animals b. tree roots d. carbonic acid

Answers

Explanation:

c. burrowing animals is the answer

Write atleast 2 functions of a frontal lobe.​

Answers

Executive Functions, thinking, planning, problem solving, organizing, emotions, behavioral control, personality.

Why do grasshoppers blend with the grass or bush?

Answers

Because they’re green. grasshopper are also pretty small.
because of camouflage grass hoppers easily blend in with grass brush trees and ext because they are green

When core body temperature rises, blood vessels in the skin
get wider, allowing a larger volume of blood to flow near the skin surface. This is called:
A. Negative feedback
B. Vasodilation
C. Shivering
D. Vasoconstriction

Answers

Answer:

B.Vasodilation

Explanation:

as vasodilation is the widening of blood vessels

Answer:

b

Explanation:

Which of the following describes a solution that contains a buffer?
• A. Citric acid is added to the solution, but the pH of the solution does
not change.
O B. Distilled water is added to the
does not change.
solution, and the ph of the solution
• C. Acetic acid is added to the solution, and the ph of the solution
becomes lower.
D Sodium hydroxide, a base, is added to the solution, and the pH of
the solution becomes higher.

Answers

Answer:

a  Citric acid is added to the solution, but the pH of the solution does

not change.

Explanation:

Which of the following products is an example of innovation and technology in plant science?
A prepotted herb garden
A potted fern
The use of GPS data
USDA hardiness zones

Answers

Explanation:

A prepotted herb garden is the answer

hope this helps you

have a nice day:)

For some parents, their offspring have larger beak depths; for others it's smaller. How does the concept of variation of traits help to explain this?

Answers

Answer:

beak depth is a complex (quantitative) trait

Explanation:

Additive effects refer to the resulting effects of two or more genes acting together. Beak depth is a quantitative trait whose variation is determined by the additive effects of many genes acting together and the environment. In quantitative traits, variation is continuous and produces a range of phenotypes. In consequence, in this case, some offspring will have a larger average beak depth compared to their parents, whereas others will have a smaller average beak depth compared to their parents. It is due to the combination of alleles or 'additive effects' inherited from different parents, and the interaction between these genes and the environment. Heritability refers to the proportion of quantitative trait variation due to additive genetic factors: a higher heritability is due to the predominance of additive genetic effects and less influenced by environmental effects.

1)Fishing boats have decreased the number of herring in the sea. Explain why that could affect the number of offspring puffins can raise.
2) Which animals have a bigger food supply now there are fewer herrings?
3) Global warming is expected to reduce the biomass of phytoplankton in the oceans. What effect will that have on the rest of the food web?​

Answers

Explanation:

1) When the number of herrings decrease, the food available for the puffins decrease and therefore they will not be able to feed their offspring. This will cause the number of offspring to decrease.

2) Any other animal(s) which hunts and eats the same prey as a herring will now have a bigger food supply.

3) When the biomass of phytoplankton decrease, the next animal in the food web will not have any food and their numbers will decrease, decreasing the number of the animals next in the web, as they too lose their food. This will continue for the rest of the food web and the number of animals will decrease.

A child is suffering from indigestion and was given a dose milk of magnesia explain why

Answers

Answer:

Magnesia is a base.

Explanation:

When you get indigestion its generally because of the over production of Hydrocloric acid in the stomach which is neutralized by consuming a basic compound like milk of magnesia.

Mark as Brainliest ;)

Pls can someone tell me how many times the human heart beats daily.

Answers

Answer:

human heart beats about 100,000 times in one day

Answer:

100,000 times daily

Explanation:

A heart beats about 100,000 times a day and pumps about 7,200 liters (1,900 gallons) of blood.

Cheers,

define ostia in science​

Answers

Answer:

Ostia are tiny pores present all over the body of sponges. its function is to let the water, along with desire nutrient flows interior of the sponges.

Answer:

An opening, a passage.

Explanation:

science - Anatomy

ASAP
Identify the error in the following statement: “Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where light energy is used to convert glucose and water into carbon dioxide and oxygen.”
A. “glucose” and “carbon dioxide” should be switched
B. No errors
C. “water” and “oxygen” should be switched
D. “chloroplasts” should be “mitochondria”

Answers

I think its B the answer for your questions not sure
Hope u find it

Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where light energy is used to convert carbon dioxide and water into glucose and oxygen. Option A is the right answer.

What is photosynthesis?

Photosynthesis is the process by which green plants prepare their own nutrients with the help of sunlight, water, and carbon dioxide.

Photosynthesis helps plants to prepare their own food, these plans are called autographs.Photosynthesis takes place inside the protoplast.This process takes place in some other organisms other than green plants.Chlorophyll is the green pigment that is required for this process to take place.The end products that are formed in the process of photosynthesis are glucose and water.

Hence Option A is the right answer.

To learn more about photosynthesis, refer:

https://brainly.com/question/1388366

#SPJ2

A functional corpus luteum should be found on the ______ day of a woman's menstrual cycle.
Question 24 options:



20th



10th



5th



1st

Answers

Answer:

it should be on 5th day I could be wrong

Explanation:

I don't have no explanation

The area where the two chromatid halves of a chromosome
are joined is called a
A. centrosome
B. metaphase plate
C. centromere
D. mitotic spindle

Answers

Answer C. centromere—the region that joins the two sister chromatids
The area where the two chromatid halves of a chromosome
are joined is called a

C. centromere

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Alex can cut a cord into 7 pieces in 36 seconds. How long will it take him to cut the cord into 12 pieces? (the answer is NOT 61 or 62.) A plank 6m long leans against a vertical wall so that the foot of the plank is 4m away from the wall. A lizard climbs 2m up the plank. Calculate the horizontal distance between the lizard and the wall. The population of Greater Accra increased by 20% and became 900,7000. The original population of the city was: Write the quotient as a single power?[tex]\frac{7^4}{7^0}[/tex] A car is travelling in the velocity of 20 m/ s . After 30 sec it covers a distance of 1200 m. Calculate the acceleration of car and the final velocity of the car You prepare a gel mobility assay with the following samples:Lane 1 Radiolabeled lacO DNA + Lac Repressor protein preincubated with allolactoseLane 2 Radiolabeled lacO DNA + Lac Repressor protein preincubated with lactoseLane 3 Radiolabeled lacO DNA + Lac Repressor protein missing its DNA binding domainLane 4 Radiolabeled lacO DNA + Lac super-repressor (Is) preincubated with allolactoseLane 5 Radiolabeled lacO DNA + lac repressor proteinOn which lanes do you expect to see two bands?a. 3b. Lane 1 and 2c. Lane 2, 4, and 5d. 2 and 4e. 1 and 5 Helppp, at least 6 sentences The word affected is CLOSEST in meaning to: A. influenced B. effect C. destroyed D. harmed Which is the inverses I still dont get this job description about doctor Instructions: Find the missing side. Round your answer to the nearesttenth.59028XX= Explain the benefits of many different ethnic groups in Ghana Whats the best major among these and why plz .Business management Business marketing Business banking Standard Direct Materials Cost per Unit Crazy Delicious Inc. produces chocolate bars. The primary materials used in producing chocolate bars are cocoa, sugar, and milk. The standard costs for a batch of chocolate (1,800 bars) are as follows: Ingredient Quantity Price Cocoa 480 lbs. $0.30 per lb. Sugar 150 lbs. $0.60 per lb. Milk 120 gal. $1.20 per gal. Determine the standard direct materials cost per bar of chocolate. If required, round to the nearest cent. $fill in the blank 1 per bar Flying cars ......... More popular in the future( be) The next train ......... At 9a.M( leave) Don't visit me next month.........! I........ In Greece. ( travel) Complete each sentence.An attempt to influence someone else's thoughts, feelings, and actions is known asA proposition known as the basis of an argument is known asA suggestion that something can be accepted, changed, or done is known as Why did Meiji leaders expand Japans military and heavily invest in industrialization? b) State the minimum monthly income and hourly wage per worker needed to cover monthly expenses for the family you used in part a. Then, explain how to calculate the hourly wage based on the monthly income and state the hourly wage. Assume that each full-time worker works four 40-hour work weeks per month, and each part-time worker works two 40-hour weeks per month. The lines below are perpendicular. If the slope of the green line is , what isthe slope of the red line?-55m = 15 times a certain number plus 5 times the same number is 80 what is the number