As we will soon see in Section 4.5, gasoline is a complex mixture of alkanes and other hydrocarbons, and the term "octane rating" is used as a standard measure of the performance of engine fuel. In the petroleum industry, one area of interest is the use of catalysts to convert unbranched alkanes and branched alkanes with higher octane ratings (Journal of the Japan Petroleum Institute 2004, 47, 1–10). For example, heptane can undergo isomerization in the presence of suitable catalysts to give eight different constitutional isomers, all of which are branched alkanes with the molecular formula C7H16. Draw all eight constitutional isomers, making sure not to draw the same compound twice.

Answer:

Bromin-79

Explanation:

The isotope bromine-79 will contain 35 protons, 35 electrons and 44 neutrons.

Answer:

Option B. A tractor–trailer traveling at 80 kph.

Explanation:

Kinetic energy can be defined as the energy possessed by a body in motion. Mathematically, it is expressed as:

K.E = ½mv²

Where:

K.E is the kinetic energy.

m is the mass of the object.

v is the velocity of the object.

From the equation, K.E = ½mv²,

We can say that the kinetic energy (K.E), is directly proportional to both the mass (m) and square of the velocity (v). This implies that the greater the mass of an object, the greater the kinetic energy and the smaller the mass, the smaller the kinetic energy.

Now, considering the options given in question above, it is evident that the tractor–trailer has a greater mass than the car, cheetah and motor cycle. Hence, the tractor–trailer will have a greater kinetic energy even though they are traveling with the same velocity.

Answer:

Ok what question

Explanation:

Answer:

Amplitude

Explanation:

Answer:

no

Explanation:

Answer:no

Explanation:The moon orbits the Earth once every 27.322 days. It also takes approximately 27 days for the moon to rotate once on its axis.

Answer:

They all carry bacteria you have to feed it

Explanation:

Answer:

They all have  Organisms.

Explanation:

Hope this helps!

Brainliest Please.

Answer:

The correct option is acetic acid

Explanation:

Distillation is the process of separating a mixture of substances based on differences in boiling points. During distillation, the compound with the lowest/least boiling point is distilled and collected first and then the one with the next least boiling point and it goes on like that.

From the explanation above, acetic acid has the least boiling point (in the organic layer) with 118°C and thus will distill first. This is then followed by isopentyl alcohol (130°C) and then isopentyl acetate (142°C) and finally sulfuric acid water (290°C).

Answer:

In one mole of NH₄Cl  6.022 × 10²³ atoms of N are present.

Explanation:

Given data:

Number of atoms of N = ?

Number of moles of NH₄Cl = 1 mol

Solution:

First we have to calculate the number of  atoms in NH₄Cl .

There is only 1 mole of N in 1 mole of NH₄Cl .

Now we will calculate the number of atoms of nitrogen in one mole of N  by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1  mole of N = 6.022 × 10²³ atoms of N

Thus in one mole of NH₄Cl  6.022 × 10²³ atoms of N are present.

Answer:

Tempature

Explanation:

Matter can move between any two states (or phases) of matter depending on the pressure and temperature conditions. ... The temperature of the melting and boiling points depend on the identity of the substance and the atmospheric pressure.

Also apex.

Answer:

temperature

Explanation:

an example here

ice

when its cold ice tends to stay as a solid but as the temperature rises the ice melts and turns into a liquid... with more heat the water will turn into gas

Answer:

The frequencies of light that an atom can emit are dependent on states the electrons can be in. When excited, an electron moves to a higher energy level or orbital. When the electron falls back to its ground level the light is emitted.

Answer:

A Light is produced when an electron moves from a higher to a lower energy level.

Explanation:

Answer:

The net force is greater at the second situation as well as the acceleration due to the contribution of the second guy.

Explanation:

Hello.

In this case, since the net force is computed via adding all the exerted forces on a body, for the first situation we can see that the net force equals the force provided by that guy when pulling, whereas in the second situation the net force equals the force of both of the guys pulling the car:

[tex]F_N_1=F_1\\\\F_N_2=F_1+F_2[/tex]

For the acceleration, we can see that applying an extra force (due to the second guy) turns out into a greater acceleration, that is why the car at the second situation reaches the tree whereas the other one does not.

Best regards.

Answer:

The answer  is  [tex]\frac{dT}{dP} = 2.84*10^{-4}\ K/Pa[/tex]

Explanation:

From the question we are told that

  The boiling point of water is  [tex]T_b = 100^oC = 100 + 273 = 373 \ K[/tex]

  The enthalpy of vaporization is  [tex]\Delta H_{vap} = 40.69 \ kJ mol-1 = 40.69 *10^{3} \ J/mol[/tex]

  The molar volume of liquid water is  [tex]V =0.019 * 10^{-3} m^3 mol^{-1}[/tex]

   The molar volume of steam is  [tex]V_s = 30.199 * 10^{-3} \cddot m^3\cdot mol^{-1}[/tex]

  The pressure is  [tex]P = 1.01325 \ bar[/tex]

Gnerally from Clausius Clapeyron equation we have that

      [tex]\frac{dP}{dT} = \frac{\Delta H_{vap}}{ T * \Delta V}[/tex]

Here  [tex]\Delta V = V_s - V[/tex]

=>     [tex]\Delta V = [30.199 * 10^{-3} ] - [ 0.019 * 10^{-3}][/tex]

=>     [tex]\Delta V = [30.199 * 10^{-3} ] - [ 0.019 * 10^{-3}][/tex]      

=>     [tex]\Delta V = 0.03018 \ m^3 mol^{-1}[/tex]          

So

    [tex]\frac{dP}{dT} = \frac{40.69 *10^{3} }{ 373 * 0.03018}[/tex]

=>  [tex]\frac{dP}{dT} = 3522.28 \ Pa/K[/tex]

Generally from the we are ask to obtain the change in the boiling point of water at 1000 C per Pa change under atmospheric pressure conditions which is mathematically represented as

       [tex]\frac{d T}{dP}[/tex]

So

    [tex]\frac{dT}{dP} = \frac{1}{\frac{dP}{dT} } = \frac{1}{3522.28}[/tex]

=> [tex]\frac{dT}{dP} = \frac{1}{\frac{dP}{dT} } = 2.84*10^{-4}\ K/Pa[/tex]

Answer:

The balanced equation is 2SO2+O2→2SO3 .

the answer is D because can be tested the others ones is opinion

please mark me as brainliest

Answer:

52g of carbon dioxide

Explanation:

Liquid hexane + gaseous oxygen --> Carbon dioxide + gaseous water

The balance chemical equation is given as;

C6H12 + 9O2 --> 6CO2 + 6H2O

From the stochiometry of the reaction;

1 mol of hexane (86g) would consume 9 mol of oxygen (144g) to form 4 mol of carbon dioxide (264g)

The limiting reactant in this equation is hexane as it would run out before oxygen. This means hexane determines how much of the carbon dioxide is formed.

86g of hexane = 264g of crbon dioxide

17g of hexane = xg of carbon dioxide

x = 17 * 264 / 86 =  52g of carbon dioxide

The question is incomplete; the complete question is;

If the pressure of each gas is increased at constant temperature until condensation occurs, which gas will condense at the lowest pressure?

A) Octane

B) Ethane

C) Butane

D) All the gases will condense at the same pressure

Answer:

Octane

Explanation:

If we study the table closely we will realize that octane has the greatest molecular mass among all the gases shown.

The greater the molecular mass, the lower the pressure required for the condensation of the gas. Hence, the lowest pressure is required for the condensation of octane at constant temperature.

Explanation:

subtract it into 273.15to convert it in to celcius

Answer:

they are expected to have the same particles because their masses are the same with there molar mass

Answer:

D) Ba < Pb < P

Explanation:

Barium (Ba): 5,2117

Lead (Pb): 7,4167

Phosphorus (P): 10,4867

Increasing order of ionization energy:

Ba < Pb < P

Pb: [Xe] 6s² 4f¹⁴ 5d¹⁰ 6p²

P:   [Ne] 3s² 3p³

Ba: [Xe] 6s²

Learn more about trends of ionization energy here:

https://brainly.com/question/6842791

#SPJ2

Answer:

Decreases  

Explanation:

Answer: If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.

(hope this helps ^^)

Given parameters:

Number of moles of Nitrogen = 2.0mole

Temperature of the gas = 1000c

Pressure on the gas = 100000Pa

Gas constant R = 8.31J/molK = 0.082atmdm³mol⁻¹k⁻¹

Unknown:

Volume in cubic meter and cubic decimeter = ?

Solution:

The ideal gas law is given as;

       PV  = nRT

where P is the pressure on the gas

          V is the volume of the gas

         n is the number of moles

         R is the gas constant

         T is the temperature of the gas

Let us convert to appropriate units;

      1000°C to K;

       K  = 1000 + 273  = 1273K

100000Pa to atm;

           101325Pa  = 1atm

           100000Pa = 0.99atm

 Input the parameters and solve for the unknown;

      0.99 x V  = 2 x 0.082 x 1273

                   V  = 210.9dm³

to m³;

        1000dm³   = 1m³

        210.9dm³ = [tex]\frac{210.9}{1000}[/tex]   = 0.21m³

Answer

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Answer:

the mean is 6 but you don't have that as an option.

Explanation:

the mean is the average.

to find the mean you have to add all of your data first

3 + 2 + 2 + 12 + 6 + 5 + 14 + 4 = 48

then you have to divide your answer by how many numbers there are in total.

48 / 8 = 6

the mean is 6.