Answer:
Atoms are made up of a nucleus, protons and electrons
Challenge What mass of methane (CH4) must be burned in order to liberate 12,880 kJ
of heat? Refer to Table 3.
HW
The mass of methane (CH₄) which must be burned in order to liberate 12,880 kJ of heat is 231.9 g
A combustion reaction is a reaction in which a substance reacts with the oxygen and releases the energy in the form of light and heat.
Given data :
Heat energy liberated = 12,800 kJ
Δ Combustion = 891 kJ/mol
To calculate the mass of methane (CH₄) -
Number of moles of methane burned = Heat energy used
Δ Combustion
Number of moles of methane burned = 12880
891
Number of moles of methane burned = 14.455 mol
Since, Molar mass of methane is 16.043 g/mol
So, Mass of methane = Number of moles of x Molar mass of methane
methane burned
Mass of methane = 14.455 mol x 16.043 g/mol
Mass of methane = 231.9 g
Therefore, the mass of methane which must be burned is 231.9 g.
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supposed chemists attempt to produce an element with atomic number 119 based on it’s likely position on the periodic table what would you expect it’s electronegativity to be? explain how you can make this prediction
An element with atomic number 119 will be an alkali metal with a +1 oxidation state which makes it highly electronegative.
What is Electronegativity?This is described as the tendency of the atom of an element to attract electrons so as to form a bond. This is done so that the elements can achieve a stable octet configuration.
On the other hand, if an element with atomic number 119 was present based on it’s likely position on the periodic table then it will most likely be an alkali metal with a +1 oxidation state and will be highly electronegative as it requires the loss of only one electron in other to achieve a stable configuration thereby making it highly reactive.
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What is the definition of Chemical Symbol
A chemical symbol is a notation of one or two letters representing a chemical element.
During a class activity, students used colored candies to create models of elements, compounds, homogeneous mixtures, and heterogeneous mixtures. The students were then asked to use the models to compare and contrast mixtures and pure substances.
Which THREE observations could the students have made?
Responses
A.The dishes of candies representing compounds and homogeneous mixtures have the same ratio of different colored candies, so compounds and homogeneous mixtures are similar because they have the same ratio of their component substances.
The dishes of candies representing compounds and homogeneous mixtures have the same ratio of different colored candies, so compounds and homogeneous mixtures are similar because they have the same ratio of their component substances.
B.The candies in the dish representing elements are all one color and the candies in the dish representing the heterogeneous mixture are four different colors, so elements have only one part while heterogeneous mixtures have four different parts.
The candies in the dish representing elements are all one color and the candies in the dish representing the heterogeneous mixture are four different colors, so elements have only one part while heterogeneous mixtures have four different parts.
C.The dishes of candies representing elements, compounds, and homogeneous mixtures look the same no matter which part of the dish you are looking at, so pure substances are similar to homogeneous mixtures because they both look the same throughout.
The dishes of candies representing elements, compounds, and homogeneous mixtures look the same no matter which part of the dish you are looking at, so pure substances are similar to homogeneous mixtures because they both look the same throughout.
D.The candies in the dishes representing elements and compounds look the same, but the candies in the dish representing heterogeneous mixtures do not look the same, so pure substances are different than heterogeneous mixtures because pure substances look the same and heterogeneous mixtures don’t.
The candies in the dishes representing elements and compounds look the same, but the candies in the dish representing heterogeneous mixtures do not look the same, so pure substances are different than heterogeneous mixtures because pure substances look the same and heterogeneous mixtures don’t.
E.The candies in the dish representing compounds are stuck together and can’t be separated and the candies in the dishes representing the homogeneous and heterogeneous mixtures are not stuck together and can easily be separated, so compounds are different from mixtures because the parts of the compound cannot be separated.
The observation that could be made by the students are; B, D, E
What is a mixture?A mixture is composed of two or more substances that do not chemically react together. Elements are chemical substances that have independent existence. Elements are combined together to give compounds.
The three observations that the students could make are;
The candies in the dish representing elements are all one color and the candies in the dish representing the heterogeneous mixture are four different colors, so elements have only one part while heterogeneous mixtures have four different parts.The candies in the dishes representing elements and compounds look the same, but the candies in the dish representing heterogeneous mixtures do not look the same, so pure substances are different than heterogeneous mixtures because pure substances look the same and heterogeneous mixtures don’t. The candies in the dish representing compounds are stuck together and can’t be separated and the candies in the dishes representing the homogeneous and heterogeneous mixtures are not stuck together and can easily be separated, so compounds are different from mixtures because the parts of the compound cannot be separated.Learn more about about mixtures:https://brainly.com/question/24898889
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which is more reactive hydrogen or Oganesson based on Electron affinity
The negatively charged atoms are known to show the electron affinity. Hydrogen is more reactive than oganesson based on electron affinity.
What is electron affinity ?The amount of energy released when an electron is added to a neutral atom to create a negatively charged ion is known as electron affinity in chemistry.
Due to the difficulty in determining atoms' electron affinities, values are only known for a small number of chemical elements, primarily halogens.
Similar towards how chlorine can achieve the configuration of noble gases and become an electronegative ion, hydrogen has a high attraction for electrons, becoming the hydrogen anion and obtaining the stable configuration of helium.
The first synthetic element to belong to group 18 (the noble gases), oganesson has the potential to be substantially more reactive than the other members of that group.
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Why is an acid able to produce ions in aqueous solution? assume that the general formula of an acid is given by ha, where a is usually a halogen or oxygen atom.
An acid is able to produce ions in the aqueous solution because polar H-A bond break due to the attraction between H atoms and the O atoms of water.
When an acid is dissolved in an aqueous solution, it forms hydrogen ions along with a conjugate base.
After dissolving in water, an acid dissociates to form hydrogen ions or H+ ions which reacts with water molecules to form hydronium ions i.e. H3O+.
Let's take this, the dissociation of hcl produces h+ ions and cl- ions in water.
HCl ⇄ H+ + cl-
The ions in aqueous solution help in electricity conduction. In the absence of water acids can not dissociate.
To put it simply, acids produce ions only when they are added to water.
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Which chemical group is most likely to be responsible for an organic molecule behaving as a base?.
The chemical group which is most likely to be responsible for an organic molecule behaving as a base is Amino group.
Amines are the nitrogen containing organic bases.
Simple organic molecules such as methylamine, H₃N-CH₃, and ethylamine, H₃N-CH₂CH₃ are known as the bronsted bases.
Functional group is defined as a group of atoms in molecule having different chemical properties and provides some characteristics to the molecule. The functional group is attached to the carbon atom in a molecule.
Functional groups can behave as a base or an acid depending on the ability of the structure to accept or to donate the H⁺ ions.
Amino group is represented as :
R
\NH₂
. .
Amino group is having the ability to accept the H⁺ ions, and it forms NH₃⁺.
--NH₂ + H⁺ → NH₃⁺
So, Amino group is most likely to be responsible for an organic molecule behaving as a base.
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describe the main factors that led to a boom in the human population size in the last 300 years
Something that causes an object to move
You do not have to begin a measurement with the liquid level at 0. 00 ml in the buret. True or false?.
Explanation:
Fill the buret with the liquid you wish to deliver and read the volume. It is not necessary to adjust the level of the liquid to exactly 0.00 ml
Nitrogen has two isotopes, N-14 and N-15, with masses of 14.0031 amu and 15.001 amu respectively. If the atomic mass of nitrogen is 14.00674 amu, what is the abundance of each isotope?
(If there is any work pls include that in the answer so I get credit ;-;)
The percentage abundance of Mass of N-14 is 99.6 % while the percentage abundance of N-15 is 0.4%.
What is the abundance of each isotope?We know that an element is composed of several isotopes. The isotopes of an element has the same atomic number but different mass numbers. The reason for the difference in the mass number of the elements is the fact that the elements do not have the same number of neutrons.
Now we have the following information;
Mass of N-14 = 14.0031 amu
Mass of N-15 = 15.001 amu
Atomic mass of nitrogen = 14.00674 amu
Let the percentage abundance of Mass of N-14 be x and the percentage abundance of N-15 be 1 - x
We now have;
14.00674 = 14.0031x + 15.001(1 - x)
14.00674 = 14.0031x + 15.001 - 15.001x
14.00674 - 15.001 = 14.0031x - 15.001x
-0.9943 = -0.9979x
x = 0.996
Hence;
percentage abundance of Mass of N-14 =0.996 or 99.6 %
percentage abundance of N-15 = 1 - 0.996 = 0.004 or 0.4%
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How many protons, neutrons, and electrons are there?
Answer:
60 electrons and 62 protons
Explanation:
62 is the
mass number and proton number its plus 2 charge so it has to be 60 electrons
atoms contain protons, neutrons and electrons.
a lithium atom has the symbol 7/3Li
Explain in terms of sub-atomic particles, why the mass number of this lithium atom is 7?
Sub atomic particles are those particles which have the size smaller that the size of an atom. these are neutrons, electron and protons.
Mass number = neutrons + protons so in lithium 3+4=7
The number of protons present in an element is known as atomic number. This is denoted as Z. Different atom have different atomic number because they have different number of protons.
The sum of protons and neutrons give us the mass number. This is denoted as A. The weight of the of the electron can be neglected so atomic mass is almost equal to mass number.
In case of lithium its nucleus consist of 3 protons and 4 neutrons so mass number = neutrons + protons ,3+4=7.
⁷₃Li this is the symbolic representation where above number is mass number and below number is the atomic number.
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Explain why the liquid in a thermometer expands as temperature increases. How is this related to the kinetic energy of the partical that makes up the liquid
When the temperature of the liquid increases, the liquid will have greater kinetic energy, so they move about more and spread apart, This will cause the expansion of the liquid in the thermometer.
What is kinetic theory of matter?
The kinetic theory of matter also known as particle theory of matter states that all matter consists of many, very small particles which are constantly moving or in a continual state of motion.
The three states of matter include;
liquid statesolid stategaseous stateThe distance between the molecule of each state of matter increases with increase in temperature.
The distance between the molecules of liquid is greater than that of solid while the distance between the gaseous molecules is the greatest.
Thus, when the temperature of the liquid increases, the liquid will have greater kinetic energy, so they move about more and spread apart, This will cause the expansion of the liquid in the thermometer.
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A gas mixture being used to simulate the atmosphere of another planet at 23°c consists of 337 mg of methane, 148 mg of argon, and 210 mg of nitrogen. The partial pressure of nitrogen at 296 k is 19. 0 kpa. Calculate the total pressure of the mixture.
The total pressure of the mixture is 81.57 kPa
Why is it possible to calculate the total pressure of a mixture?Each rapidly moving gas particle in a mixture has an equal chance of colliding with the container walls. As a result, each gas exerts its own pressure independent of the other gases present. The total pressure is the sum of all collisions per unit of wall area over a given time period.1. Write down all units given.
T= 296.15 k
337 mg CH4
148 mg Ar
210 mg of N2
PPN2= 19 kPa
2. Convert mg to g.
337 mg= 0.337 g CH4
148 mg= 0.148 g Ar
210 mg= 0.210 g N2
3. Calculate moles for each.
0.337/16.04= 0.021 mol CH4
0.148/39.948= 0.003 mol Ar
0.210/28.02= 0.007 mol N2
4. Calculate the mole fraction of N2. Xi= nN2/n total
0.007/0.021 + 0.003 + 0.007= 0.225
5. Remember that PPN2= xN2 x Total Pressure
19 kPA= 0.225x
6. Solve for x.
19/0.007=84.45 kPA
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HELP PLS ITS IMPORTANT
Calculate the heat in kJ required to change 10.0 g of water at 20.0°C into steam at 120.0°C. The specific heat of ice, water and steam is 2.108 J/g*°C, 4.18 J/g*°C, 2.010 J/g*°C respectively. Hf for H2O = 334 J/g, Hv for H2O = 2260 J/g.
The total heat added is obtained as 26.36 kJ.
What is the heat required?We know that heat is the form of energy that exists due to the temperature difference between two bodies. Now when we heat water, we add heat to the water and the effect is that the temperature of the water would begin to rise and this owes to the heat that we have added to the water.
We know from the question that;
Mass of water = 10.0 g
Specific Heat capacity of liquid water = 4.18 J/g*°C
Specific Heat capacity of steam = 2.108 J/g*°C
Heat of vaporization of water = 2260 J/g
H = (10 * 4.18 * (100 - 20)) + (10 * 2260) + (10 * 2.108 * (120 - 100))
H = 3344 + 22600 + 421.6
H = 26.36 kJ
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One gram of sodium chloride will take longer to dissolve in a solution of 2 m glucose than in a solution of pure water. What is the most reasonable explanation for this observation?.
One gram of sodium chloride takes longer to dissolve in a solution of 2M glucose than in pure water. This is because sodium chloride will encounter a greater frequency of collisions in a 2M glucose solution than in water. This shows that diffusion occurs more slowly in a solution containing a solute than in pure water.
If you were to put one gram of sodium chloride in a beaker of pure water, it would eventually dissolve. However, if you were to put the same amount of sodium chloride in a beaker of water that also contained two moles of glucose, it would take longer for the sodium chloride to completely dissolve.
The reason for this is that, in a solution with more molecules present, the sodium chloride would encounter more collisions. This would lead to a slower diffusion rate, and thus, a longer time for the sodium chloride to completely dissolve.
In general, solutions with more molecules present will have a slower diffusion rate than solutions with fewer molecules present. So, if you want the sodium chloride to dissolve quickly, it's best to put it in a pure water solution.
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Many everyday substances, such as oxygen, gold and aluminium, are elements.
Other substances such as water and sugar are not.
Explain what this means in terms of the atoms in them.
Many everyday substances, such as oxygen, gold and aluminium, are element . but Other substances such as water and sugar are not
element is the simplest pure substance that can not be broken down into any other substance on the other hand atom is the smallest particle of an element.compound is a pure substance which is made of two or more than two elements that are combined chemically in a fixed ratio.so, from the above discussion we concluded that H2O and C12H22O11 are compound because these do not have single type of atom rather they consititute a fixed proportion of more than one elements.but oxygen written as O2aluminium written as Algold written as Au so, all of these have single type of atoms, so known as element .To know more about element visit :
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in a synthesis, the temperature inside the reaction flask is called the reflux temperature. what would be the internal reaction temperature in the diels alder reaction studied today?
The internal reaction temperature would be constant temperature in the Diels alder reactions, The temperature would be 25 ° C to 100° C.
Diels alder reaction : This reaction is used to make the chemical more stable. This reaction is used to synthesis of different materials such as plastics and rubber.
It is an exothermic reaction.
Xylene is used to faster the chemical reaction in the given process.
The product would be cyclohexane.
MP of the reaction is 84 °C to 114 ° C.
It is also a electrocyclic reaction.
In past it uses temperature around 200°C.
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PLS HELP IVE BEEN STUCK ON THIS FOR SO LONG
v
How would you describe the bond that exists between two oxygen atoms to make the o2 molecule? how many lone pairs are present on each individual oxygen atom?.
The bond that exists between two oxygen atoms to make the O2 molecule is described as two covalent bonds and two lone pairs of electrons are present on each individual oxygen atom.
A double bond in chemistry is a covalent bond between two atoms that involves four bonding electrons, rather than two as in a single bond.
In the oxygen molecule, O2, the oxygen atoms that make up the molecule are bonded together by sharing two pairs of electrons. Each oxygen atom has 6 valence electrons, if they share two of their valence electrons with each other, they each have 8 valence electrons.
In this way, the so-called octet rule is fulfilled, where atoms gain, lose or share electrons with other atoms to have 8 valence electrons and thus acquire a noble gas configuration.
What is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
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How much energy is needed to raise the temperature of 5.0 grams of lead from 25°C to 35°C? [specific heat (c) = 0.129 J/(g•°C)]
Q=C x M x ^ T
The amount of energy that is needed to raise the temperature of 5.0 grams of lead from 25°C to 35°C is 6.45J.
How to calculate energy?The energy of a substance can be calculated by using the following formula:
Q = mc∆T
Where;
Q = quantity of heat absorbed or releasedm = mass of substancec = specific heat capacity∆T = change in temperature (°C)According to this question, 5.0 grams of lead needs to be raised from 25°C to 35°C, the amount of energy needed can be calculated as follows:
Q = 5 × 0.129 × {35°C - 25°C}
Q = 6.45J
Therefore, the amount of energy that is needed to raise the temperature of 5.0 grams of lead from 25°C to 35°C is 6.45J.
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the student determines the mass of the agcl precipitate to be 5.48 g. on the basis of this information, calculate each of the following. (i) the number of moles of mgcl2 in the original mixture (ii) the percent by mass of mgcl2 in the original mixture
What is Gravimetric analysis?
Gravimetric analysis difficulties are basically stoichiometry problems with a few extra stages. It is a class of lab techniques to determine the concentration of a solution by measuring the mass of a precipitate formed. To find moles of solute use grams of precipitate and to find concentration divide by volume.
To calculate moles of precipitate:Moles = mass / molar mass
To calculate mass of analyte:mass moles × molar mass
To calculate percent by mass of analyte in sample:(mass analyte/ mass sample) × 100
Solution:
Given:
Mass of AgCl= 5.48 g
1) Molar mass of AgCl = 143.42 g/mol
Number of moles of AgCl = 5.48 g AgCl/143.32 AgCl = 0.0382 mol AgCl
Number of moles of MgCl₂ = 0.0382 mol AgCl × (1 mol Cl/1 mol AgCl )× (1 mol MgCl₂/2 mol Cl ) = 0.0191 mol MgCl₂
2) Mass of MgCl₂ = 0.0191 mol MgCl₂ × (95.20 g MgCl₂ / 1 mol MgCl₂)
=1.82 g MgCl₂
Percent by mass = ( 1.82 g MgCl₂/ 2.94 g sample) × 100% = 61.9% MgCl₂ by mass
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An element with 20 protons and 20 elec-
trons gains one electron. The electron goes
into what type of orbital?
An element with 20 protons and 20 electrons gains one electron. This gained electron goes into the 3d-orbital.
What are electrons?Electrons may be defined as the type of sub-atomic particles which are consistently revolving around the nucleus of an atom. These particles are negatively charged in nature. It may be thought that J.J. Thomson discovered the electrons for the very first time.
The electronic configuration of an element that possesses 20 electrons is [tex]1s^2 2s^22p^63s^23p^64s^2[/tex]. So, the 4s orbital is completely filled. Now, the gained electron must enter the 3d orbital in order to systematize the electronic configuration. The electrons will fill up the five 3d orbitals and finally the three 4p orbitals to complete energy level 4.
Therefore, an element with 20 protons and 20 electrons gains one electron. This gained electron goes into the 3d-orbital.
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Why is an acid able to produce ions in aqueous solution? assume that the general formula of an acid is given by ha, where a is usually a halogen or oxygen atom.
An acid is able to produce ions in the aqueous solution because polar H-A bond break due to the attraction between H atoms and the O atoms of water.
When an acid is added to an aqueous solution, it produces hydrogen ions along with a conjugate base.
After dissolving in water, an acid splits up to form hydrogen ions or H+ ions which reacts with water molecules to form hydronium ions i.e. H3O+. The general formula of an acid shows that is is composed of a halogen atom, oxygen atom and hydrogen atoms.
Let's take this, the dissociation of HNO3 produces h+ ions and NO3- ions in water.
HNO3 ⇄ H+ + NO3-
These ions are responsible for electricity conduction. In the absence of water acids can not dissociate.
To put it simply, acids donate h+ ions only when they are added to water.
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If you were to do a 50% serial dilution, starting with a 10% concentration, how many dilutions would you have to make before getting to 2. 5% as your final concentration?.
The number of dilutions required to reach 2.5% as the final concentration would be 2.
Any dilution in which the concentration is reduced by the same amount in each subsequent stage is referred to as a serial dilution.
In serial dilutions, the original volume divided by the final amount is known as the dilution factor.
[tex]DF = \frac{V_i}{V_f}[/tex]
Now we are given that we must do 50% serial dilution, which indicates that the concentration must be reduced to half of its starting value after each dilution.
∴ [tex]DF=\frac{10}{50}[/tex] × [tex]100[/tex]
DF = 2
This indicates that starting with a 10% concentration, a single dilution would result in a 5% concentration. And again diluting this 5% concentration would result in a 2.5% concentration.
Hence, the number of dilutions required to reach 2.5% as the final concentration would be 2.
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25 cm³ of 0.1 mol/dm³ hydrochloric acid exactly neutralise 20 cm³ of aqueous sodium hydroxide.
The equation for this reaction is:
NaOH + HCI →→ NaCl + H₂O
What is the concentration of the sodium hydroxide solution?
The concept molarity is an important method which is used to calculate the concentration of a solution. Here molarity - volume relation is used to find out the concentration of the sodium hydroxide solution.
The term molarity is defined as the number of moles of the solute present per lite of the solution. It is represented as 'M' and it is expressed in the unit mol / L.
The equation connecting molarity and volume is:
M₁V₁ = M₂V₂
M₂ = M₁V₁ / V₂
0.1 × 25 / 20 = 0.125 cm³
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With this information, we now need to calculate the volume in milliliters. We need to know how many mls a drop of oleic acid occupies using the density of 0. 895 g/ml and the number of drops of oleic acid solution used.
According to the density, there are m/0.895 milliliters in a drop of oleic acid and the total drop is 0.895/m of total volumes.
We need to know about the density to solve this problem. Density is a unit that measures how dense an object is. Density can be measured by dividing mass by volume. It can be written as
ρ = m / V
where ρ is density, m is mass and V is volume
From the question above, we know that
ρ = 0.895 g/mL
Assume that 1 drop of oleic acid is m gram. Hence,
ρ = m / Vdrop
0.895 = m / Vdrop
Vdrop = m/0.895 mL
Find the total drops
V = Vdrop x n
n = V / Vdrop
n = V / (m/0.895)
n = 0.895/m of total volumes
in a drop, there is m/0.895 mililiters of oleic acid and the total drop is 0.895/m of total volumes.
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the reaction a 2b → c is found to be first order with respect to both a and b. when the concentration of a is 0.200 m and the concentration of b is 0.400 m, the reaction rate is 0.00700 m/s. what is the numerical value of k
Option E) In the reaction A+ 2B-C that is found to be first order with respect to both a (0.200 m concentration and b (0.400 m concentration) the numeric value of k is 0.0875
What is Concentration?Concentration in chemistry terms is calculated by dividing a constituent's abundance by the mixture's present total volume.
Mass concentration, molar concentration, number concentration, and volume concentration are four different categories that can be described in a mathematical description.
A + 2B → C
Rate = K [A] [B]
Here,
[A] = 0.2 M [B]
⇒ [A] = 0.4 M
rate = 0.007 M/s
Therefore, rate = K [A] [B]
⇒ 0.007 = K (0.2) (0.4)
⇒ K = 0.0875 M^(-1) S^(-1)
Thus, option E is correct.
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Complete question
The reaction A+ 2B-C is found to be first order with respect to both A and B. When the concentration of A is 0.200 M and the concentration of B is 0.400 M, the reaction rate is 0.00700 M/s. What is the numerical value of k for this reaction (with appropriate units where time is in seconds and concentration is in M, as needed).
A) 0.0438
B) 0.0140
C) 11.4
D) 5.60 x 10^(-4)
E) 0.0875
A plot of the maxwell distribution of speeds for the same sample of gas at different temperatures shows that.
The same sample of gas at different temperatures shows that at low
temperatures, most molecules have speeds close to their average
speed.
What does the Maxwell-Boltzmann distribution graph show?
Put simply, a Maxwell-Boltzmann distribution graph shows how the energy of gas particles varies within a system.
This is solely a measurement of the speeds of particles because kinetic energy is directly related to speed.
The Maxwell-Boltzmann distribution in chemistry is the subject of this article.
We will begin by describing how to read a graph of the Maxwell-Boltzmann distribution. This will involve taking a closer look at things like the typical energy and the most likely energy.
The graph will then be changed under various circumstances, such as when a catalyst is added or the temperature is raised.
The Maxwell-Boltzmann distribution, which we previously mentioned, is a probability function that depicts the distribution of energy among the particles of an ideal gas. (For more information on this topic, see Chemical Kinetics.)
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A plot of the maxwell distribution of speeds for the same sample of gas at different temperatures shows that at low temperatures, most molecules have speeds close to their average speed.
What is the maxwell distribution of speed?The distribution of energy between identical but distinct particles is the subject of the Maxwell-Boltzmann distribution.
The distribution of speeds for gas at a specific temperature is specified by the Maxwell-Boltzmann equation, which is the foundation of the kinetic theory of gases.
The speed that is most likely to occur, the speed that is average, and the root-mean-square speed can all be calculated using this distribution function.
The number of molecules moving at a given speed is represented by the Maxwell-Boltzmann graph's y-axis.
Therefore, if the graph is higher in a certain area, it indicates that there are more gas molecules traveling at such speeds in that area.
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