how many primary carbon are in 2,3 dimethylpentane​

Answers

Answer 1

Answer:

There are 7 carbons in 2,3 dimethylpentane

Explanation:

Because 2,3-dimethlypentane is an organic compound of carbon and hydrogen with formula C7H16


Related Questions

Which of the following processes is exothermic? Group of answer choices Allowing meat to thaw after taking it out of the freezer Popsicle melting on a warm summer day Boiling water in a beaker to convert it to steam Rolling a ball up a hill Reacting hydrogen and oxygen gases to make water

Answers

Answer:

Reacting hydrogen and oxygen gases to make water

Explanation:

Exothermic means that energy is released into the environment, so let's go through the process of elimination.

Allowing meat to thaw after taking it out of the freezer - NO it is endothermic, and takes energy/heat from the environment to thaw.

Popsicle melting on a warm summer day - NO also endothermic, the opposite of exothermic.

Boiling water in a beaker to convert it to steam - NO because we need to add heat, so it doesn't release any energy.

Rolling a ball up a hill - NO, for a ball to roll up a hill, it needs energy from something else, so it's not exothermic.

Reacting hydrogen and oxygen gases to make water - YES this reaction makes new bonds, which releases energy, so this is exothermic.

Among the following choices reacting hydrogen and oxygen gases to make water is an exothermic reaction as it releases energy as new bonds are formed.

What is an exothermic reaction?

An exothermic reaction is defined as a chemical reaction which involves release of energy in the form of light,heat .In these reactions, energy is transferred from system to surroundings rather than taking energy from surroundings into system as in endothermic reactions.

In an exothermic reaction,change in enthalpy is negative.Therefore, it can be inferred that net amount of energy which is required to start the exothermic reaction is less than the net amount which is released by the reaction.

Examples of exothermic reactions are combustion reactions, detonation of nitroglycerin , neutralization reactions and nuclear fission.

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Perform the forlowing
mathematical operation, and
report the answer to the correct
number of significant figures.
4568/13 = [?]

Answers

Answer:

[tex]\large \boxed{350}[/tex]

Explanation:

In multiplication and division problems, the answer can have no more significant figures than the number with the fewest significant figures.

My calculator gives the result:

[tex]\dfrac{4568}{13} = 351.3846154[/tex]

4658 has four significant figures.

     13 has two significant figures.

You must round to two significant figures.

That is, you drop all the digits to the right of the 5 — the red line in Fig. 1 below. You are rounding to the nearest ten.

To round a number to the nearest ten, you look at the number in the ones place (1). See Fig. 2.

If the number to be dropped — the digit in the ones place — is less than 5, you drop the digit in the ones place (Fig. 3). It becomes a zero.

The number in the tens place is a trailing zero. It is not significant.

[tex]\text{The quotient of $\dfrac{4658}{13}$ is $\large \boxed{\mathbf{350}}$}[/tex]

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide. H2SO4 + KOH ⟶

Answers

Answer:

The answer to your question is given below.

Explanation:

The reaction of sulfuric acid and potassium hydroxide is called neutralisation.

Neutralisation is a reaction involving an acid and a base which produces salt and water only.

For the react between sulfuric acid, H2SO4 and potassium hydroxide, KOH, we can predict the products obtained as follow:

H2SO4 + KOH —>

In solution, H2SO4 and KOH will dissociate as follow:

H2SO4(aq) —> 2H^+(aq) + SO4^2-(aq)

KOH(aq) —> K^+(aq) + OH^-(aq)

H2SO4 + KOH —>

2H^+(aq) + SO4^2-(aq) + K^+(aq) + OH^-(aq) —> K^+(aq) + SO4^2-(aq) + 2H^+(aq) + OH^-

H2SO4 + KOH —> K2SO4 + H2O

Now, we can balance the above equation as follow:

H2SO4 + KOH —> K2SO4 + H2O

There are 2 atoms K on right side and 1 atom on the left side. It can be balance by writing 2 in front of ko as shown below:

H2SO4 + 2KOH —> K2SO4 + H2O

There are 2 atoms of H on the right side and a total of 4 atoms on the left side. It can be balance by writing 2 in front of H2O as shown below:

H2SO4 + 2KOH —> K2SO4 + 2H2O

Now,the equation is balanced.

Answer:

Given the reactants, H2SO4 and KOH, we are asked to determine the product(s) of the reaction. Since H2SO4 is an acid and KOH is a base. This is a neutralization reaction, thus, the products are salt and water.  

So, H+ from H2SO4 will react with OH- from KOH forming H2O. K+ will also react with SO4 2- forming K2SO4. Therefore, the balanced reaction will be:

H2SO4 + 2KOH ---> K2SO4 + 2H2O

Explanation:

The identity of an element is determined by

A. the number of neutrons
B. the weight of the nucleus
C. the number of protons
D. the number of electrons



The answer is Number of Protons !

Answers

Answer: D. the number of protons

Explanation: The number of protons shows you what the Atomic number of an element is on the Periodic table of elements.

The identity of an element is primarily determined by the number of protons it possesses. The Option C.

What determines the identity of an element?

Each element on the periodic table has a unique number of protons in its nucleus which is referred to as its atomic number. This fundamental property of an element distinguishes it from other elements and determines its place on the periodic table.

While number of neutrons and electrons can vary within an element, it is the number of protons that defines its identity. Thus, the correct answer is C: the number of protons.

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3.87 moles of iron bromide yielded10.4 moles of sodium bromide

Answers

Answer: 89.57 %

Hope it helps

Question #13
What causes the low pressure zones around the equator?
Hint: How does air move at a low pressure zone? Why does
air move that way? What happens at the equator that would
cause air to move that way?

Answers

Answer:

Warm equatorial air rises higher into the atmosphere and migrates toward the poles. This is a low-pressure system. At the same time, cooler, denser air moves over Earth's surface toward the Equator to replace the heated air. ... This happens because Earth's rotation generates what is known as the Coriolis effect

How would a decrease in volume affect the following reaction? N2 (g) + O2 (g) Two arrows stacked on top of each other. The top arrow points to the right. The bottom arrow points to the left. 2NO(g) (1 point) The equilibrium would shift to the right. The equilibrium would shift to the left. There would be no change to equilibrium. The affect on equilibrium cannot be determined.

Answers

Answer:

Explanation:

                        N₂(g) + O₂(g) ⇄ 2NO( g )

We shall apply Le Chatelier's principle to see the effect of decrease in volume or increase in concentration on the effect of state of equilibrium in the reaction given .

In this reaction 1 volume of nitrogen gas reacts with 1 volume of oxygen to give 2 volume of NO gas . In total there is no change in volume due to reaction . So when we change the volume , the concentration of reactant and product will affect the rate of forward and reverse reaction . Overall there will be no change in the state of equilibrium . The equilibrium will neither shift to the right nor will shift to the left.

It will remain unchanged .

what is mean by stakeholder​

Answers

Answer:

a stakeholder is a party that has an interest in a company and can either effect or be affected by the business. the primary stakeholder in a typical corporation are its investors , employees, customers and supplies.

Please help me...

Atoms of elements X, Y and Z have 16, 17 and 19 electrons, respectively. Atoms of argon have 18 electrons.

a Determine the formulae of the compounds formed by the combination of the atoms of the elements:
(i) X and Z
(ii) Y and Z
(iii) X with itself.

b In each of the cases shown in
A (i)–(iii) above, name the type of chemical bond formed.

c Give two properties you would expect to be shown by the compounds formed in an (ii) and an (iii).

Answers

Answer:

a 1) XZ2

2) YZ

3) X2

b 1) Ionic bond

2) Ionic bond

3) covalent bond

c) ionic compounds has high melting and boiling point

ionic compounds can conduct electicity in aqueous form

covalent compounds have electrons shared between the atoms

covalent compounds have lower melting point compared to ionic compound

Answer:

(i) XZ = Potassium Sulfide [K2SO4]

(ii) YZ = Potassium Chloride [KCI]

(iii) X = Sulfur [S]

b) (i) Ionic Bond. (ii) Ionic Bond. (iii) Covalent Bond.

c) (i) Ionic compounds have high melting and boiling points.

(ii) Ionic compounds can conduct electricity in a molten state or a solution as they have ions that can move and carry charge.

(iii) Covalent compounds have low melting and boiling points.

(iv) Covalent compounds can not conduct electricity as all electrons are involved in bonding so there are no free electrons or ions to carry the charge.

Hope this is OK :))

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explain the formation of coke?

please answer this question
I will mark u the brainlest☺️☺️​

Answers

Answer:

Here is it....

Explanation:

Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will_______________.

Answers

Answer:

If mass remains the same while the volume of a substance changes, the density of the substance will also change.

Answer:

BELOW

Explanation:

If mass remains the same while the volume of a substance decreases the density of the substance will increase.

Was is meant by the term suprenatural? Does science deal with the supernatural?

A. The term supernatural literally means (within nature) Science deals with the supernatural because it works within nature, not above it

B. The term supernatural literally means (above nature) Science does not deal with the supernatural because it works within nature, not above it

C. The term supernatural literally means (within nature) Science does not deal with the supernatural because it works above nature, not within it

D. The term supernatural literally means (above nature) Science deals with the supernatural because it also works with nature, not within it

Answers

Answer:

The term supernatural literally means, Science does not deal with the supernatural because within nature, not within it


The density of a 39 gram object with a volume of 5 cm is

Answers

Answer:

[tex]\huge\boxed{\sf D = 7.8 \ g/cm^3}[/tex]

Explanation:

Density = Mass / Volume

Where Mass = 39 g and Volume = 5 cm³

So,

[tex]\sf Density = \frac{39}{5} \\Density = 7.8 g/cm^3[/tex]

explain why ply(ethene) can become a pollutant? ​

Answers

Answer:

ipotseeeeeeeeeeeeeeee

please someone explain this I dont get it at all. how do we know that the 4th electron came from 2p because it's at 4th ionisation? why is it talking about 3s?? how do overall know that aluminium is in group 3 from the table??? thanks​

Answers

When you look at a table of ionization, you will see that certain groups, or columns, on the periodic table will either lose or gain a certain number of electrons. We can also see that aluminum is in the third column, hence it is in group 3

Balance the following equation. Choose "blank" if no coefficient other than 1 is needed. CaCl2 + Na2CO3 CaCO3 + NaCl

Answers

Answer:

Hi there!!!

The answer is given in picture.

In question we had 2 sodium(Na) and chlorine (cl) but after reaction nacl donot contain it. so, we need to put 2 infront of nacl to make them equal.

As balancing chemical equation refers to the process of keeping or making equal to the atoms of both product and reactant.

Hope it helps..

percentage of carbon in urea

Answers

The percentage of carbon in urea is [CO(NH 2) 2] is 20%

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How do scientists use ice to study ancient climates?


A. through glacial deposits and ice cores

B. through glacial deposits and ice ages

C. through ice cores and pollen grains

D. through pollen grains and ice ages



Which greenhouse gas is produced by commercial refrigeration and air conditioning systems?


A. carbon dioxide

B. fluorinated gas

C. nitrous oxide

D. methane

Answers

Q1. A.

Q2. Nitrous oxide

Hope this helped ♥︎

Explanation:

the first question's answer is a

the second question's answer is c

Suppose you were given a substance and asked
to determine whether or not it was a plasma. Write
the characteristics you would look for to identify
the substance.

Answers

Answer:Particles in plasmas collide more often.

Plasma particles have high kinetic energy (they move quickly).

Plasma particles are far apart.

The ionized particles have no fixed volume

Explanation:

Plasma is the fourth form of matter which has freely moving electrons in it. The substance can be identified as plasma if its particles collide often and are far apart.

What is plasma?

Plasma is a type of matter other than solids, liquids, and gas. They have similar properties to that of gas. Plasma particle collides are often like gases as they move freely in space. Like gases that have no definite shape and volume.

The plasma particles have ionic charges, positive and negative resulting in high kinetic energy. This property allows them to show electromagnetism and electrical conductivity.

The ionized particles are due to the high temperature that allows them to have the property of electrical conductivity and compression.

Therefore, the particles of plasma are ionized and have high kinetic energy.

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Define physical and chemical properties, provide three examples of each, discuss their reversibility, and explain the fundamental differences between them.

Answers

Answer:

Physical properties are defined as the properties which can be observed without changing its chemical composition.

For example: color, volume, and molecular weight.

Chemical properties are defined as the properties which can be observed only after changing chemical identity of the substance.

For example: reactivity, toxicity, and flammability.

The fundamental differences between physical and chemical properties are as follows:

Chemical properties are related to chemical bonds of the substance while physical properties are not.In chemical properties, chemical identity of substance changes while physical properties do not have any change.Chemical properties predict the reaction of substance while physical properties only describe the appearance of the substance.

Answer:

Chemical properties are related to chemical bonds of the substance while physical properties are not.

In chemical properties, chemical identity of substance changes while physical properties do not have any change.

Chemical properties predict the reaction of substance while physical properties only describe the appearance of the substance.

Explanation:

using methyl ,phenolphthalein and litmus name an acid

Answers

Answer:

These are two types of indicators which show a solution is either an acid a natural or an alkali solution

Explanation:

Hope this helps :)

If a gas displays a solubility of 0.00290M at a partial pressure of 125 kPa, what is the proportionality constant for this gas in this solvent and at this temperature?

Answers

Answer:

The proportionality constant ( Henry’s constant) = 2.32 * 10^-5 M/kPa

Explanation:

Here in this question, we are concerned with calculating the proportionality constant for this gas.

Mathematically, we can get this from Henry law

From Henry law;

Concentration = Henry constant * partial pressure

Thus Henry constant = concentration/partial pressure

Henry constant = 0.00290 M/125 kPa = 2.32 * 10^-5 M/kPa

4 examples of ionic bonding identifying in each one the anion, the cation and demonstrate the ionic bonding by means of the electronegativity difference.

Answers

Answer:

Here are some examples

Explanation:

NaCl

Cation = Na⁺, Anion = Cl⁻; ΔEN = |0.93 - 3.16| = 2.23

MgS

Cation = Mg²⁺, Anion = O²⁻; ΔEN = |1.31 - 3.44| = 2.53

KBr

Cation = K⁺, Anion = Br⁻; ΔEN = |0.82 - 2.96| =  2.14

CaF₂

Cation = Ca²⁺, Anion = F⁻; ΔEN = |1.00 - 3.98| = 2.98

In each case, ΔEN > 1.6, so the compound is ionic.

What is the colour formed when N2O is bubbled into a solution of acidified FeSO4​

Answers

The color formed when N2O is bubbled through Feso4 is = reddishbrown

If a chemist wants to make one liter of a 1.5 M solution of NaOH from a stock solution of 2.5 M NaOH, how many milliliters of the stock solution would the chemist need to use?


A.6.0 x 102 mL

B. 0.60 mL


C. 1.7 x 103 mL

Answers

Answer:

0.60 mL

Explanation:

1. Set up the equation using Vi = MfVf / Mi

Vi = (1.5M · 1L) / 2.5M

2. Solve

1.5 / 2.5 = 0.6

What is the atomic number of neon?

Answers

Answer:

the atomic number of a neon is 10

The recommended dose of aminophylline for children is 1.0 mg/kg/hr. 15 mL of a 30 mg/mL sltn is added to a 150 mL bottle of D5W. At what rate mL/hr should the injection be delivered to 35 lb child

Answers

Answer:

The answer is "6.68 [tex]\frac{ml} {hr}[/tex]".

Explanation:

It's going to be 18.18 kg to turn body mass to kg.  

Size 1mg / kg / hr, therefore = 1 x 18.18

                                               = 18.18 kg / hr  

now we adding 30 mg / ml of dextrose = 30 x 15

                                                                 [tex]=\frac{450mg}{15 ml +150 ml}[/tex]

of dextrose, from 15 ml to 150 ml;  

Therefore, now 450 mg in 165m:    

[tex]= \frac{ 450}{165}\\ \\=2.72 \frac{mg} {ml}[/tex]  

now divide the   18.18 by 2.72:

[tex]=\frac{18.18}{2.72}[/tex]

= 6.68 [tex]\frac{ml} {hr}[/tex]

calculate the amount in moles of a gas which occupies 250cm3 at s.t.p​

Answers

Answer: 0.01 moles (I am guessing)

Explanation:

Firstly, cm3 and ml are equal to one another, therefore 250cm3 can also be written as 250 ml. I Googled and found that ideally, one mole of gas will occupy a volume of 22.4 L (22,400 ml) at s.t.p. 250 ml out of 22,400 ml is 0.01 rounded, therefore I assume that is the answer. About 0.01 mole occupies 250 cm3 at s.t.p.

Air is an example of a mixture because the elements and compounds that make up air retain their individual properties. T or F

Answers

Answer:

True

Explanation:

This is true because no chemical bonding or change was involved only mechanical mixing.

This is true
Hope that help

Which of the following polyatomic ions will form an ionic compound with two sodium ions? CO32− HCO31− NO21− NO31−

Answers

Answer:

CO32−

Explanation:

We have to consider the valencies of the polyatomic ions involved. Recall that it is only a polyatomic ion with a valency of -2 that can form a compound which requires two sodium ions.

When we look closely at the options, we will realize that among all the options, only CO32− has a valency of -2, hence it must be the required answer. In order to be double sure, we put down the ionic reaction equation as follows;

2Na^+(aq) + CO3^2-(aq) ---------> Na2CO3(aq)

Answer:

A).  CO32−

Explanation:

Other Questions
The accountant for Mandarin Company is preparing the company's statement of cash flows for the fiscal year just ended. The following information is available:Retained earnings balance at the beginning of the year $949,000Net income for the year 295,000Cash dividends declared for the year 55,000Retained earnings balance at the end of the year 1,397,000Cash dividends payable at the beginning of the year 12,600Cash dividends payable at the end of the year 14,900What is the amount of cash dividends paid that should be reported in the financing section of the statement of cash flows?a. $55,000.b. $57,300.c. $82,500.d. $2,300.e. $52,700. Which of the circumstances below most accurately describes conditions that are likely to permit a robust anti-tumor adaptive immune response?a. A tumor with high expression of proteins that have mutations in sequences encoding HLA-binding peptides.b. A robust acute inflammatory response to PAMPs expressed specifically by tumor cells.c. Anti-tumor T lymphocytes that have high expression of CTLA-4.d. A tumor with high expression of PD-L1. function of carbohydrates the smallest square number which can be divisible by 11 and 5 If an object's mass is 70 g, and its volume is 10cm cubed, what is its density? Please need help ASAP please need help 100 points please Eleanor spends all of her money on magazines and donuts. In 2014, she earned $14.00 per hour, the price of a magazine was $7.00, and the price of a donut was $1.00. Which of the following give the nominal value of a variable? A. Eleanor's wage is $14.00 per hour in 2014. B. The price of a donut is $1.00 in 2014. C. Eleanor's wage is 2 magazines per hour in 2014. Which of the following give the real value of a variable? A. Eleanor's wage is 14 donuts per hour in 2014. B. The price of a magazine is 7 donuts in 2014. C. Eleanor's wage is $14.00 per hour in 2014. Suppose that the Fed sharply increases the money supply between 2014 and 2019. In 2019, Eleanor's wage has risen to $28.00 per hour. The price of a magazine is $14.00 and the price of a donut is $2.00. In 2019, the relative price of a magazine is ________. Between 2014 and 2019, the nominal value of Eleanor's wage ______, and the real value of her wage _________. Monetary neutrality is the proposition that a change in the money supply nominal variables and _______ real variables. In which of the following compounds does the carbonyl stretch in the IR spectrum occur at the lowest wavenumber?a. Cyclohexanone b. Ethyl Acetate c. - butyrolactone d. Pentanamide e. Propanoyl Chloride what is the diamater of a circlethe area of a circle is 144 m^2 Find the missing probability. P(B)=720,P(A|B)=14 ,P(AB)=? what is the equation of the translated function, g(x), if f(x)=x^2 Convert the following:4 liters is equivalent toa0 quarts A firm recently issued $1,000 par value, 15-year bonds with a coupon rate of 9%. Coupon interest payments will be paid semi-annually. The bonds sold at par value, but the firm paid flotation costs amounting to 5% of par value. The firm has a corporate tax rate of 21%. What is the firm's after-tax cost of debt for these bonds? Accidentally a food handler sprays glass cleaner onto a pan of baked chicken strips. Which type of hazard is this? 14. Find the distance between (7,217pi/180 ) and (5,-23pi/36 ) on the polar plane. please help I am not sure about my answer Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A sampling distribution is normal only if the population is normal. Choose the correct answer below. A. The statement is false. A sampling distribution is normal only if n30. B. The statement is false. A sampling distribution is normal if either n30 or the population is normal. C. The statement is true. D. The statement is false. A sampling distribution is never normal. This is not really a question but can you read my essay that I wrote last year and review it? Please. If life is not suffering you still do not have the moral righteousness to decide whether someone else's life is worth living. What this person is saying is, life is not meant to live in pain, therefore you cant decide if someone else should live or die. This relates to abortion. Abortion is the termination of a life, a babys life. There is no excuse to abort unless it is to save the life of the mother. Besides, there are other options. Abortion is wrong, for many reasons, therefore it should be illegal. A human is a human being from the point it was created. According to BBC.com, A foetus has a unique genetic code, a foetus is a unique individual. Aborting a child, no matter how long it has been inside its mother's womb, would be killing it. And killing a human being is a crime. It is wrong to kill beings that would have a future like ours if they lived. (BBC.com: Introduction to the Abortion Debate) Everybody wants to live a happy and succesful life. Why not give a child the chance to grow up, to be successful and happy? It is wrong to cause pain & suffering, a foetus is sufficiently developed to feel pain by 18 weeks. (BBC.com: Introduction to the Abortion Debate) Nobody wants to be in pain, so why cause it to another? One said, Many women do not become pregnant by choice. It is wrong to force these women to remain pregnant when they do not want to be. (Kialo.com Pro-life vs Pro-choice: Should abortion be legal?) It is obvious that most women who have an abortion do not become pregnant because they want to. But no one forces these women to remain pregnant, instead some give advice on how to raise a child. If women abort, they are forcing a baby to die when they do not want to. ... This can lead to additional abortion benefits; it allows women to continue pursuing their educational or career goals and work toward greater financial stability. (Unplannedpregnancy.com Pros & Cons of Abortion: 16 Things Every Women Should Know) But according to the University of Massachusetts Medical School, only 4% of the abortions are due to interference with education or career plans. The causes of financial instability are, the lack of money management skills, income stability, and financial literacy. (ScienceDaily.com) One of the leading causes of the lack of money management skills is education expenses. (solveyourdebts.com) According to marketplace.org, college graduates leave school with a debt of $30,000. But 53% end up being unemployed or working in a job that doesnt require a bachelors degree. (Washington.edu) So there is no reason to abort if you have that excuse. There are two other options besides abortion. Adoption and parenting. If you truly do not have the money to raise a child or do not want it you could put it up for adoption. There are many couples out there willing to adopt and raise a child. On the other hand, you could just raise the child. There are many organizations that provide help if it is needed. Later on, after the pregnancy, you can learn to love it and care for it. It may be true that it is cheaper to abort than to raise a child. According to CBSnews.com, the estimated cost of raising a child from birth through age 17 is $233,610. To abort, it costs from about $350 to $950. But what matters most is that you love and care for the child. Although an abortion usually lasts 10-15 minutes, it still violates the right to life. It causes pain and suffering to both the mother and the baby. There are other options, abortion doesnt have to be one of them. Why not give a chance, instead of taking one away? A friend of your has been absence from school for months dus to illness write a letter to the friend describing some interesting things that have happened in the school during the period and expressing your wish for a quick recovery According to John Locke, when do people have the right to revolt against their government?