Which of the following correctly lists the compounds in order of decreasing acidity?
A) H2O > HCCH > NH3 > CH3CH3
B) HCCH > H2O > NH3 > CH3CH3
C) CH3CH3 > HCCH > NH3 > H2O
D) CH3CH3 > HCCH > H2O > NH3
E) H2O > NH3 > HCCH > CH3CH3

Answers

Answer 1

Answer:

A) H2O > HCCH > NH3 > CH3CH3

Explanation:

H2O is known as a neural compound which a pH close to 7.0. This however makes it more acidic due to it having the lowest pH when compared to the others in the option.

The other options however have their acidic strength as follows: HCCH > NH3 > CH3CH3. This explains why the pattern of decreasing acidic strength is H2O > HCCH > NH3 > CH3CH3


Related Questions

You may want to reference (Page) Section 12.4 while completing this problem. Enter the balanced chemical equation for the complete combustion of each of the following hydrocarbons found in gasoline used to start a fire:________.
Part A. liquid nonane
Express your answer as a chemical equation including phases.
Part B. liquid isopentane (2-methylbutane)
Express your answer as a chemical equation including phases.
Part C. liquid 3-ethyltoluene
Express your answer as a chemical equation including phases.

Answers

Answer:

See explanation

Explanation:

In this question, we have to remember that in all combustion reactions we will have Oxygen as reactive ([tex]O_2[/tex]) and the products are Carbon dioxide ([tex]CO_2[/tex]) and Water ([tex]H_2O[/tex]). Additionally, for the states, we will have (l) for the liquid state and (g) for the gas state. So, we can analyze each reaction:

Part A.

The formula for nonane is [tex]C_9H_2_0[/tex], with this in mind we can write the combustion reaction:

[tex]C_9H_2_0_(_I_)~ +~ O_2~->~CO_2_(_g_)~ +~H_2O_(_g_) [/tex]

When we balance the reaction we will obtain:

[tex]C_9H_2_0_(_I_)~ +~14 O_2_(_g_)~->~9CO_2_(_g_)~ +~10H_2O_(_g_) [/tex]

Part B.

The formula for 2-methylbutane is [tex]C_5H_1_2[/tex], with this in mind we can write the combustion reaction:

[tex]C5H12_(_I_)~ +~O_2_(_g_)~->~CO_2_(_g_)~ +~H2O_(_g_) [/tex]

When we balance the reaction we will obtain:

[tex]C5H12_(_I_)~ +~8O_2_(_g_)~->~5 CO_2_(_g_)~ +~6 H2O_(_g_) [/tex]

Part C.

The formula for 3-ethyltoluene is [tex]C_9H_1_2[/tex], with this in mind we can write the combustion reaction:

[tex]C_9H_1_2_(_I_)~+~O_2_(_g_)~->~CO_2_(_g_)~+~H2O_(_g_)[/tex]

When we balance the reaction we will obtain:

[tex]C9H12_(_I_)~ +~12O_2_(_g_)~->~9CO_2_(_g_)~ +~6H2O_(_g_)[/tex]

See figure 1 for further explanations.

I hope it helps!

what is the first step to solving a problem ?

Answers

Asking a question............

Calculate the PE of an object that has a mass of 2kg that is resting on a 6m table. HELP ME PLEASE I REALLY NEEEEED HELP!!!! 21 POINTS PLEASSEEEE

Answers

Answer:

Calculate the unknown variable in the equation for gravitational potential energy, where potential energy is equal to mass multiplied by gravity and height; PE = mgh. Calculate for different gravity of different enviornments - Earth, the Moon, Jupiter, or specify your own. Free online physics calculators, mechanics, energy, calculators.

Explanation:

How many protons and neutrons does iron-56 have? Question 10 options: 26 protons and 56 neutrons 26 protons and 26 neutrons 30 protons and 56 neutrons 26 protons and 30 neutrons

Answers

Answer:

Protons: 26

Neutrons: 30

Explanation:

Does pineapple belong in pizza

Answers

Answer:

No no no and no no no no no no

Answer:

This is quite a controversial question ahaha. Personally, I think pineapple on pizza is good sometimes. depends on the day though.

Explanation:

To me it is a good combination of sweet and salty. The pineapple is also pretty refreshing.

A football field is supposed to be exactly 120yd long, including the end zones. How many inches is this?

Answers

Answer:

4320 inches

Explanation:

math

A football field is supposed to be exactly 120yd long, including the end zones is 4320 inches.

What are zones?

Zones are defined as a space that is physically or artificially isolated from other spaces. There are numerous sorts and sizes of zones.

Zones are also defined as a region that is designated as having a specific average annual minimum temperature, which is important for many plants to survive.

There are four types of zones.

The intimate spaceThe personal spaceThe social spaceThe personal space

The Torrid Zone, Temperate Zone, and Frigid Zone are the three temperature-based regions of the Earth.

Planting zones are predetermined areas based on the types of plants that thrive there.

Thus, a football field is supposed to be exactly 120yd long, including the end zones is 4320 inches.

To learn more about zones, refer to the link below:

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Measured value 28.7053 cm, which has six significant figures. Round the measurement to five significant figures

Answers

Answer:

28.705 cm

Explanation:

Hello,

In this case, for rounding the number to five significant figures we must "cut" it at 5 so we hide the 3, therefore it turns out:

28.705 cm.

Moreover, we must realize that since such 3 is less than five, we do not modify the previous five to six, case which would happen if that three has changed to five or more.

Regards.

1. Why is it important to know the names and appearance of lab equipment before doing laboratory work? 1. So you will score higher on the lab test. 2. So you quickly obtain your laboratory supplies before lab. 3. So you can follow the lab instructions clearly. 4. So you can make sure everything has been cleaned before beginning the lab procedure.

Answers

Answer:

1. because what if you do a incorrect ion? it would be all wrong! 2. you dont get it quickly because! you might get the wrong equipment. 4. yep! no food or drinks!

Explanation:

hope this helps ☻︎

Which of the following would a chemist be most likely to study? A. what happens when a moving car comes to a stop B. what happens when iron rusts in the presence of water C. what happens when ice melts to form liquid water D. what happens when light reflects from a shiny surface

Answers

Answer:

B. what happens when iron rusts in the presence of water

Explanation:

5. Three solution A, B and C have pH 2, 8 and 7 respectively.
A. Which one of these will turn blue litmus paper into red.
B. Which one of these will turn china rose indicator into green
C. Which one of these will not change colour of any indicator

Answers

Answer:

A. The solution with a pH of 2 will turn the litmus paper red

B. The solution with a pH of 8 will turn the China rose indicator green

C. The solution with a Ph of 7 will not change the color of the blue litmus indicator or of the China rose indicator

Explanation:

Blue litmus paper will only change color if it is dipped into an acidic mixture which turns it red. It will not change color at all in a basic or neutral Ph solution.

China rose turns dark pink in an acidic solution and green in a basic solution. However it has no change in color with a neutral solution.

When you calculate apercent recovery you may find sometimes that it islarger than 100%. Assuming this is NOT due to errors associated with zeroing the balance, subtracting the weight of the watch glass or weigh paper, or inaccuracies in the balance calibration, suggest a possible reason for this.

Answers

Answer:

Presence of impurities in the product.

Explanation:

Laboratory experience has shown that the percent yield obtained from a reaction may be greater than 100% if the product obtained from the reaction contains impurities that causes its mass to be greater than it actually would be if the product was pure.

A typical impurity that may be present in a product is the solvent used. This can be removed by evaporation of the solvent or by washing the product thoroughly.

Reaction of solid products with gases may also increase the percentage yield above 100%.

a cube is 4 cm on each size .what is it’s volume?

Answers

The answer to your question is :64 cm cubed

Answer:

64cm^3

Explanation:

[tex]s = 4cm\\V = s^3\\\\V = 4^3\\V =4\times 4\times 4\times 4\\Volume = 64cm^3[/tex]

A protein has an isoelectric point (pI) of 9. Which of the following statements best describes the state of this protein in aqueous solution at pH 7?
A. The side chains of the protein's basic residues will be mostly uncharged
B. The side chains of the protein's acidic residues will be mostly protonated
C. The protein will have no net charge
D. The protein will have a net positive charge
E. The protein will have a net negative charge

Answers

Answer:

The  correct option is  D

Explanation:

From the question we are told that

 The pH of the aqueous solution is  [tex]pH  =  7[/tex]

 The  isoelectric point  is  [tex]pl =  9[/tex]

From the data given we see that the  

        [tex]pH[/tex] is  below  [tex]pl[/tex]

So the protein will have a net positive charge

A protein has an isoelectric point (pI) of 9, the statement which best describes the state of this protein is that the protein will have a net positive charge.

What is isoelectric point?

Isoelectric point of any susbatnce is the pH of the substance where net charge on that substance will be zero, i.e. no. of positive charged ions will equal to the number of negative charged ions.

In the question it is given that value of isoelectric point (pl) of protein is 9 and given value of pH is 7. It means that isoelectric point is higher that given pH so the protein molecule should bear a positive charge on it. If pH value is greater than pl value then molecule will bear a negative charge.

Hence option (D) is correct.

To know more about isoelectric point, visit the below link:
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Chocolate candy melting in your hand is what type of heat transfer

Answers

The answer to that is: Conduction

Normal human body temperature is 98.6 °F. This is equivalent to °C or K is :___________.

Answers

Answer:

74ifhdyteuyteutyruf

Why is important to only change one variable in a controlled experiment

Answers

A variable within a scientific experiment is something that is changed (i.e. it varies). There should be only one manipulated variable within a scientific experiment so that the experimenter can be certain it is this variable which causes a pattern in the resultant data, if any exists at all.

HOPE IT HELPS PLZ BRAINLIEST

PLEASE HELP WITH PAGE 1 FOR QUESTIONS 1, 2, 3 WITH THE GRAPHING THANK YOU.

Answers

i need a picture in order to answer that question.

What has the smallest mass,proton neutron or electron ?

Answers

electrons have smallest mass

Explanation:

Hey there!!

The answer is Electrons.

Electrons are the small part of an atom that revolves around the nucleus of an atom.

Hope it helps..

If you stacked Avogadro's number of pennies one on top of the other on Earth's surface, how far would the stack extend (in kilometers)? [For comparison, the sun is about 150 million km from Earth and the nearest star (Proxima Centauri) is about 40 trillion km from Earth.] Express your answer using four significant figures.

Answers

Answer:

Avogadro number of pennies will extend to a distance of 6.02 * 10¹⁷ km

Note: The question is missing some parts. The complete question is as follows;

A penny has a thickness of approximately 1.0 mm . If you stack ed Avogadro's number of pennies one on top of the other on Earth 's surface, how far would the stack extend (in km)? [For comparison, the sun is about 150 million km from Earth and the nearest star (Proxim a Centauri) is about 40 trillion km from Earth.]

Explanation:

Avogadro number = 6.02 * 10²³

thickness of a penny = 1.0 mm

I mm = 0.001 m

Thickness of Avogadro number of pennies stacked one upon another will be:

6.02 * 10²³ * 0.001 m = 6.02 * 10²⁰ m

Distance in km;

1 m = 0.001 km

therefore, 6.02 * 10²⁰ m = 6.02 * 10²⁰ * 0.001 km = 6.02 * 10¹⁷ km

Avogadro number of pennies will extend to a distance of 6.02 * 10¹⁷ km

Water drops that fall on a smooth surface tend to form rounded drops or beads. Then, if you touch a piece of paper to the drop, water appears to move up into the paper on its own. Identify and describe the properties of water that explain this phenomenon.

Answers

Answer:

Surface tension

Capillary action

Explanation:

Surface tension is the force acting along the surface of the liquid causing the liquid surface to behave like a stretched elastic skin. Surface tension causes the water drops that fall on a smooth surface to form rounded drops or beads.

If you touch a piece of paper to the drop, water appears to move up into the paper on its own due to capillarity. Capillarity is the tendency of a liquid to rise or fall in a narrow tube.

Pre-lab Assignment
1. Student A measures an object and records a value of 1.5 cm. Student B measures the same object
and records a value of 1.50 cm. They have both done their measurements correctly. Why do these
measurements differ?
a. They aren't different.
b. Person A used a ruler with markings every 0.1 cm. Person B used a ruler with markings every
0.01 cm.
c. Person A used a ruler with markings every 1 cm. Person B used a ruler with markings every 0.1
cm.
d. Person A rounded their measurement.
2. When multiplying or dividing measured numbers, we use the measurement with the least number of
significant figures to determine the number of significant figures (sf) in our answer. For example:
3.5 cm x 4.75 cm - 17 cm? (even though the calculator gives 16.675) Solve the following problems
assuming all are measured numbers. Report the correct number of significant figures.
a. 7.00 x 15.00 =
b. 40.2.1.901 =
c. (0.003)(13.2) =
d. 1.590+ 0.3975 =

Answers

Answer:

1. d. Person A rounded their measurement

2) a. 105.

b. 76.4

c. 0.04

d. 1.988

Explanation:

1. Measuring an object is done with the least precise one. Person A recorded 1.5cm while Person B recorded 1.50cm of the same object. This measurement differs in the sense that Person A rounded up their measurement to 2 significant figures (1.5) while Person B recorded their answer as three significant figures (1.50).

2. During multiplication and division, the result is written as the measurement in the lowest significant figure.

a. 7.00 x 15.00 = 105. Calculator showed 105.00, which is 5 s.f (two zeros after decimal point are significant). The least significant figure is 3, hence 105.00 is rounded up to 105.

b. 40.2.1.901 = 76.4; The calculator answer of this operation is 76.420200 but since the lowest significant figure is 3. We round up our answer to 3 s.f i.e. 76.4

c. (0.003)(13.2) = 0.04. For this operation, calculator answer is 0.0396, however, the lowest significant figure in the question is 1 i.e. 0.003. Note that the two zeros before 3 are insignificant. Hence, our answer will be rounded up to 1 s.f i.e. 0.04

d. 1.590+ 0.3975 = 1.988. the calculator answer to this operation is 1.9875. However, the least significant figure in the question is 4 i.e. 1.590. hence, the answer will be rounded up to 4 s.f which is 1.988.

What kind of substances can you not heat on a Bunsen burner?

Answers

Answer:

Substances which are non heat-resistant and volatile organic liquid with flammable vapor.

Explanation:

Bunsen Burner are used as a source of fire in the laboratory for heating up substances. Extra care however should be taken during heating in order to prevent fire or other forms of accidents.

Heating of mind heat resistant substances should be frowned at as the substances may get heated up and melt thereby exposing the liquid substances which may be flammable to fire thereby causing fire outbreak.

Heating of volatile organic liquid with flammable vapor should also be discouraged to prevent fire accidents.

Convert a density of 1,235 kg/m3 to grams per cubic centimeter

Answers

Answer:

Density, [tex]d=1.235\ g/cm^3[/tex]

Explanation:

It is given that, the density is 1,235 kg/m³.

We need to convert the density to g/cm³.

We know that,

1 kg = 1000 g

1 m = 100 cm

[tex]1235\ kg/m^3=1235\ \dfrac{kg}{m^3} \\\\=1235\times \dfrac{1000\ g}{(100\ cm)^3}\\\\=1.235\ g/cm^3[/tex]

So, the density is [tex]1.235\ g/cm^3[/tex].

please answer this question​

Answers

Answer:

false, true, false - In reality stirring increases the speed of dissolving.

Answer:

False

True

False

Explanation:

1.It does take the shape of the container (has cohesive and adhesive properties)

2. It is a good solvent as in it, lots of salts are able to dissolve.

3. Stirring increases the speed of dissolving.

1. What is the name of the covalent compound CCl4?2. What is the name of the covalent compound N2O5?

Answers

The first one, is like methane (CH4) but with 4 chlorine atoms. So tetrachloromethane. (Tetra is the Greek prefix for ‘four’)
The second one is a compound that consists of covalent bonds. This means that you should work with prefixes. This results in dinitrogenpent(a)oxide.

The name of the covalent compound CCl₄  is carbon tetracloride while that of N₂O₅ is dinitrogen pentoxide.

What is a covalent compound?

Covalent compound has a covalent  bond which  is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

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1. Sketch the structures of maleic and fumaric acids. What is the structural relationship between the two? 2. How does the structure/isomerism of each acid affect its physical properties?

Answers

Answer:

See explanation

Explanation:

The structures of maleic and fumaric acids are shown in the image attached to this answer.

We can easily see that maleoc and fumaric acids are geometric isomers of each other. They differ only in the orientation of the -COOH group about the C=C double bond.

Maleic acid is less stable than fumaric acid as shown by their respective heats of combustion. This is expected since maleic acid is the cis-isomer with more steric repulsion than the trans-isomer.

Maleic acid is more soluble than fumaric acid and also has a lower melting point than fumaric acid.

A beaker cannot be used for measuring the volume of a liquid because _____.

Answers

Answer:

Data obtained can't be accurate.

Explanation:

A beaker can't be used for measuring the volume of a liquid because they did not calculate volume of a liquid accurately and precisely. The marks present on the beaker are not accurate, it is just an estimate so by measuring the volume of any liquid using beaker give us a false data so that's why beaker are not used for the measurement of a volume.

what is the mass of an electron is

Answers

Answer:

the rest mass of an electron is 9.1093837915

Answer:

Fundamental properties. The invariant mass of an electron is approximately 9.109×10−31 kilograms, or 5.489×10−4 atomic mass units. On the basis of Einstein's principle of mass–energy equivalence, this mass corresponds to a rest energy of 0.511

Question: In experiment your teacher has provided you with a sample of sandy, salty, ocean water and

asked you to separate the components of the mixture. In no more than four sentences, state if the

sample is a homogeneous or heterogeneous mixture, with supporting evidence, and describe how you

would accomplish the task.

Answers

Answer:

Explanation:

Homogeneous mixture is a mixture in which the components of the mixture are in the same proportion throughout any sample extracted from the mixture while an heterogeneous mixture is a mixture in which the components of the mixture differ in term of proportion when different samples of the mixture are extracted and compared.

For example, a sandy water will have some parts (usually the bottom) of the mixture with more sand than other parts of the mixture, hence, it (sandy water) is a heterogeneous mixture. While salty and ocean water has it's salt dissolved in the same proportion throughout the water in the mixture, hence salty and/or ocean water is a homogeneous mixture.

Sandy water can be separated by filtration (i.e using a filter paper to separate the sand from the water when the mixture is poured over a filter paper) while salty and ocean water can be separated by distillation (i.e boiling of the mixture so the water molecules can boil and move through a tube as gas or steam into another container where they are cooled and converted back to liquid or water while leaving the solid salt component of the mixture in the boiling tube).

The TV weather forecaster announces that one location has a 30% chance of rain tomorrow and a 35% chance of hail. What is the probability that it will rain or hail in this location?

Answers

Answer: 65%

Explanation:

When in probability and the outcome is mutually exclusive which means that either one or the other will happen then the probabilities of the events should be added up.

P(A or B) = P(A) + P(B)

P(Rain or Hail) = P(Rain) + P(Hail)

P(Rain or Hail) = 30% + 35%

P(Rain or Hail) = 65%

Other Questions
answer the following please answer! i'll mark brainliest! In Yakuna it was -13 degrees in the morning. The highest tempature was 29. Was was the total number the temp. increased The following occurred during 20X1. A $35,000 note payable was issued. Land was purchased for $50,000. Bonds payable (maturing in 20X5) in the amount of $30,000 were retired by paying $30,000 cash. Capital stock in the amount of $40,000 was issued at par value. The company sold surplus equipment for $14,000. The equipment had a book value of $14,000 at the time of the sale. Net income was $35,500. Cash dividends of $5,000 were paid to the stockholders. 100 shares of stock of another company (considered short-term investments) were purchased for $8,300. $75,000 in bonds were issued. The next day, the proceeds were used to purchase a new building. $12,000 of depreciation was recorded on the plant and equipment. At December 31, 20X1, Cash was $93,200, Accounts receivable had a balance of $41,500, Inventory had increased to $73,000, and Accounts payable had fallen to $25,500. Long-term investments and Taxes payable were unchanged from 20X0. Required: Prepare a statement of cash flows for 20X1. Prepare the December 31, 20X1, balance sheet for Kay Wing, Inc. What was one reason that we declared independence from Great Britain? The most significant challenge in international accounting for Americancompanies is ____?A. managing multiple currenciesB. implementing cloud computing C. following GAAPD. complying with the Sarbanes-Oxley Act A car accelerates from rest to 90m/s in 3 seconds. What is the acceleration and how far did it travel? Which of the following ethical theories believes in the well-being of maximum people using the fairest means available?A. Deontological theoryB. Moral relativism theoryC. Act utilitarianism theoryD. Rule utilitarianism theory Should your height be measured in meters or centimeters Successful memoirs tell a GOOD STORY. Do you think Us and Them"meets that requirement? Why or why not? Refer to specific detailsfrom the text in your response. A student puts $250 into an account that pays 2% simple interest every year. How muchmoney in total is in their account after 3 years? help me, i will give a lot of points for this Based on the words in the Preamble, do you think the Declaration of Independence was written for selfish or ideological reasons? What is the length, in dekameters, of 1073.4 centimeters? The typical capacity for human lungs is approximately 5800 mL. At a temperature of 37C (average body tempurature) and pressure of 0.98 atm, how many moles of air do we carry inside our lungs? What does the word skulking suggest about the raccoon? 1. The raccoon is sleepy. 2. The raccoon is enraged. 3. The raccoon is wary. 4. The raccoon is joyful. the answer is 3. wary Point M is the midpoint of FG. Can the value of variable a be determined? Explain F(b+1, a+2). M(3,5). G(2a, 3b+3) Find the value of x. (12x-41) (5x) (5y) Where on a projection is the distance between locales going to be most accurate? Under most conditions, except ________ change, the resistance of an object is a constant and does not depend on the amount of the voltage or the amount of current passing through it. Let $a$, $b$, $c$, $d$, and $e$ be positive integers. The sum of the four numbers on each of the five segments connecting "points" of the star is 28. What is the value of the sum $a + b + c + d + e$?