the key component of smog is group of answer choices sulfur dioxide. particulate matter. carbon monoxide. ground-level ozone.
Answers
The key component of the smog is ground-level ozone.
The Ground-level ozone that is O₃ is the major component of the smog. This is formed from the photochemical reactions and with the pollutants like as the volatile in the organic compounds, the carbon monoxide and the nitrogen oxides (NOx) and it will emitted from the vehicles, and the industry.
Ozone at the ground level is very harmful air pollutant, this is because of the effects on the people and to the environment, and it is the main source of the smog. The smog is the air pollution is that the reduces visibility.
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Related Questions
which has more mass a mole of potassium or a mole of sodium explain your answer
Answers
Answer:
Mass of 1 mole potassium = 39.1
Therefore, a mole of potassium has more mass than a mole of sodium.
A solid magnesium flare has a mass of 1300 g and a volume of 743 cm3. What is the density of the magnesium?
Answers
Answer:
1.74 g/cm3
Explanation:
density=mass/volume
Explanation:
density = 1300/743
or density=1.74g/cm3
How much heat will be produced when 0.58 moles of
hydrogen peroxide (H2O2) decomposes? *
98 kJ + 2H,02(1) → 2H2O(l) + O2(g)
Answers
Answer:57.6 kJ
Explanation:
Which of these properties is most helpful when identifying a substance in a given sample of matter
Answers
Answer:
melting point
Explanation:
its one of the physical properties of a substance
Answer:
A
Explanation:
Use the following thermochemical equation to calculate how much heat in kilojoules is evolved or absorbed in each of the following processes.
2H2(g)+O2(g)?2H2O(l) ?H=?571.6kJ
A) How much heat in kilojoules is evolved in this process? (14.35 g of gaseous hydrogen burns in excess oxygen)
B) How much heat in kilojoules is absorbed in this process? (5.950 mol of liquid water are converted to hydrogen and oxygen gas)
Answers
Answer:
Explanation:
aha I finally found the answer
What does it mean if you have a metallic taste in your mouth.
Answers
The Henry's Law constant (k) for carbon monoxide in water at 25°C is 9.71 x 10-4 mol/(L·atm). How many grams of CO will dissolve in 1.00 L of water if the partial pressure of CO is 2.75 atm? A) 3.53 x 10-4 g D) 7.48 x 10-2 g B) 2.67 x10-3 g E) None of these choices is correct. C) 9.89 x 10-3 g
Answers
Answer:
2.67 * 10-3 mol/L
Explanation:
Henry's law is a gas law that states that the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid. The proportionality factor is called Henry's law constant. (Wikipedia)
Given that; C =kP
C= concentration of a dissolved gas = ?
k = Henry's Law constant = 9.71 x 10-4 mol/(L·atm)
P = partial pressure of the gas = 2.75 atm
So,
C = 9.71 x 10-4 mol/(L·atm) * 2.75 atm
C = 2.67 * 10-3 mol/L
Using the following equation
2C2H6 +7O2 -->4CO2 +6H2O
How many grams of C2H6 are formed from 9.5 moles of CO2 gas?
Answers
30.06904 grams of C2H6 are formed from 9.5 moles of CO2 gas.
How to find number of moles?
In the International System of Units, the mole is the unit of substance amount. A mole of a substance is defined as a mass of material that contains exactly 12,000 g of 12C's exact number of atoms as fundamental units. One mole has 600 sextillion molecules. While employing the mole, complicated calculations are more easily understandable. To get the number of moles, divide the compound's known mass by its molar mass. Consider a scenario where your sample of Na2SO4 weighs 20 g. 20 grammes divided by 142 grammes per mole yields 0.141 moles.
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Group 1
113.
111
110
110
Group 2
114
115
111
110
Group3
116
113
114
113
Group 4
110
111
111
110
Each of four groups of students determined and recorded the melting point of a solid compound.
If the actual melting point is 113°C, which group had the
best precision?
Answers
Answer: Group 4 had the best "precision".
Explanation:
This is a bit of a trick question. The concept being tested here is whether you understand the difference between "accuracy" and "precision."
Accuracy is how close you are to the actual answer. In this question, Group 2 is probably the most accurate since their average is near 113 (i.e., 112.5).
However, the question is asking for precision, which is how close your answers are to each other. Think of it as "consistency" (even if you are consistently wrong... at least you are "precise"!). Group 4 is the most precise, because all of their measurements are practically the same: 110, 111, 111, 110 are all basically 110. This is NOT the most accurate, but it IS the most PRECISE. :)
he mechanism of the decomposition of hydrogen peroxide is what is the overall reaction equation? is there a reaction intermediate? if so, what is it? is there a catalyst? if so, what is it? what is the rate law for the overall reaction?
Answers
The mechanism of the decomposition of hydrogen peroxide involves the breaking down of H2O2 into water and oxygen gas. The overall reaction equation is:
2H2O2 → 2H2O + O2
There is a reaction intermediate in this process, which is the formation of hydroxyl radicals (OH*):
H2O2 → H2O + OH*
OH* + H2O2 → H2O + HO2*
HO2* → H2O + O2
The decomposition of hydrogen peroxide is catalyzed by the enzyme catalase, which is found in many living organisms. The rate law for the overall reaction is:
Rate = k [H2O2][catalase]
where k is the rate constant and [H2O2] and [catalase] are the concentrations of hydrogen peroxide and catalase, respectively.
2H2O2 → 2H2O + O2
There is a reaction intermediate involved in this process, which is the hydroxyl radical (OH•).
Catalysts are often used to speed up the decomposition of hydrogen peroxide, and common catalysts include potassium iodide (KI), manganese dioxide (MnO2), and catalase enzyme.
The rate law for the overall reaction can be written as:
Rate = k [H2O2]^n
Here, k is the rate constant, and n is the reaction order with respect to hydrogen peroxide. The values of k and n depend on the specific conditions and presence of a catalyst in the reaction.
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Which statement best explains the type of bond that will form between two elements from group 6A in the model?
A. The two elements will form a covalent bond because both elements will share a single electron in order to have full outer shells
B. The two elements will form a covalent bond because both elements will share a pair of electrons in order to have full outer shells.
C. The two elements will form an ionic bond because one of the elements will donate one electron to the other element in order to have full outer shells.
D. The two elements will form an ionic bind because one of the elements will donate two electrons to the other elements in order to have full outer shells.
*Will give brainliest*
Answers
Answer:
D is the answer
Like my answer
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the correct option is option D.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.
The two elements will form an ionic bind because one of the elements will donate two electrons to the other elements in order to have full outer shells.
Therefore, the correct option is option D.
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Important functions of hydrochloric acid in digestion/absorption include:__
Answers
Important functions of hydrochloric acid in digestion/absorption include Activation of enzymes, Protein digestion, Optimal pH for enzyme activity, Denaturation of proteins, Kill bacteria and pathogens, Nutrient absorption.
Important functions of hydrochloric acid (HCl) in digestion and absorption include:
Activation of enzymes: HCl helps activate the enzyme pepsinogen, converting it into its active form called pepsin. Pepsin is essential for the breakdown of proteins into smaller peptides, initiating protein digestion in the stomach.
Protein digestion: HCl provides the acidic environment necessary for pepsin to function optimally. Pepsin breaks down proteins into smaller peptides that can be further digested by other enzymes in the small intestine.
Optimal pH for enzyme activity: HCl lowers the pH of the stomach, creating an acidic environment. This acidic pH is required for the activity of other digestive enzymes, such as gastric lipase, which aids in the digestion of dietary fats.
Denaturation of proteins: HCl helps denature proteins by disrupting their tertiary structure. This unfolding of proteins exposes more surface area, making it easier for enzymes to break them down into smaller peptides.
Kill bacteria and pathogens: The highly acidic environment created by HCl in the stomach helps kill many harmful bacteria and pathogens that may enter the digestive system through food or other means. This serves as a defense mechanism against infections.
Nutrient absorption: HCl plays a role in the absorption of certain nutrients, such as iron and vitamin B12. It helps convert these nutrients into forms that are more easily absorbed by the small intestine.
In summary, hydrochloric acid plays crucial roles in digestion and absorption. It activates enzymes, facilitates protein digestion, creates an optimal pH for enzyme activity, denatures proteins, helps kill bacteria and pathogens, and aids in the absorption of specific nutrients. Without adequate HCl production, proper digestion and nutrient absorption can be compromised, leading to digestive issues and nutrient deficiencies.
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What are the two laws of conservation of energy?
Answers
Answer:
Explanation:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. This is particularly confusing in the case of non-conservative forces, where energy is converted from mechanical energy into thermal energy, but the overall energy does remain the same. The only way to use energy is to transform energy from one form to another.
Answer:
The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. The second law of thermodynamics states that the entropy of any isolated system always increases.
Explanation:
PDB CODE: 1MRY SEQUENCE POSITION: 229 AMINO ACID MUTATED TO: ARG In the PDB protein, you were given the sequence position of a particular amino acid that is mutated to another amino acid. Draw the structure of the two amino acids. Describe why this position in your protein is important and outline the effects of the mutation will have on the 3-D structure and the function of your protein.
Answers
The mutated amino acid at position 229 is arginine (Arg), and its substitution can potentially disrupt the 3D structure and alter the function of the protein due to changes in side chain properties and interactions.
Structure of the Amino Acids:
The wild-type amino acid at position 229 is not specified, so the structure cannot be provided.
The mutated amino acid is arginine (Arg), which has a side chain containing a positively charged guanidinium group.
Importance of the Position:
The specific position 229 in the protein sequence may be functionally significant, such as being involved in protein-protein interactions, binding sites, catalytic activity, or structural stability.
Without detailed knowledge of the protein, its function, and its structural context, it is difficult to determine the exact importance of this specific position.
Effects of the Mutation on Structure and Function:
The substitution of an amino acid at position 229 from the original to arginine can have various effects on protein structure and function.
Arginine's larger and positively charged side chain may introduce steric clashes or alter electrostatic interactions within the protein structure.
The mutation can potentially disrupt local or global protein folding, stability, or conformational changes, affecting its overall 3D structure.
The functional consequences of the mutation depend on the specific role of the amino acid at position 229, which can include changes in protein-protein interactions, enzymatic activity, substrate binding, or signal transduction pathways.
It is crucial to analyze the protein's structural context, available experimental data, and computational modeling techniques to gain a more accurate understanding of the specific effects of the mutation on the protein's structure and function in the given context.
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Can someone please describe the nature and variety of instruments used to detect radiation?
Answers
Answer:
The Answer is below :)
Explanation:
A variety of handheld and laboratoryinstruments is available for detectingand measuring radiation. ... Geiger Counter, with Geiger-Mueller (GM) Tube or Probe—A GM tube is a gas-filled device that, when a high voltage is applied, creates an electrical pulse when radiation interacts with the wall or gas in the tube.
A compound contain only carbon, Hydrogen, Oxygen. Mass percentage of carbon is 52.2%, relative molecular mass of compound is 46, Find how many hydrogen atom present
Answers
Answer:
Six
Explanation:
Mᵣ = 46
Aᵣ(C) = 0.522 × 46 = 24
Difference = 22
Less 1 O = -16
Aᵣ(H) = 6
The relative atomic mass of the H atoms is 6.
The molecule contains six hydrogen atoms.
Choose the atom with:
a) Higher first ionization energy
Li and F
b) Larger atomic radius
Na ando
c) Higher electronegativity
Li and F
Answers
Answer:
a )Li
b)O
c)F
Explanation:
a) Li-1s^2 2s^1
F-1s^2 2s^2 2p^5
it is easy to pull out e- from 2p orbit than 2s because 2s orbit is close to nucleus.Therefore Li have high ionisation enthalpy
b)oxygen ion is larger than Na because o have fewer proton
c)F because it requires only 1e to achieve stable noble gas configuration.Therefore to achieve stable nobke gas electonic configuration it accept 1e.
Why might increasing the temperature alter the rate of a chemical reaction?
Answers
Answer:
Because after increasing of temperature kinetic energy of molecules increases and reaction speed increases in forward or reverse direction.
Explanation:
does the hydrogen necessary in the electron transport chain come from the splitting of carbon dioxide molecules
Answers
The hydrogen necessary for this process is ultimately derived from the splitting of carbon dioxide molecules. Yes, the hydrogen necessary for the electron transport chain is derived from the splitting of carbon dioxide molecules in a process known as the Calvin Cycle, or the light-dependent reaction.
In this process, carbon dioxide, water, and light energy are used to create high-energy molecules, such as ATP and NADPH, which are then used in the electron transport chain. During the Calvin cycle, carbon dioxide is reduced by NADPH and ATP to produce a three-carbon molecule called glycerate 3-phosphate.
Hydrogen is removed from glycerate 3-phosphate to create a two-carbon compound known as glyceraldehyde 3-phosphate. This compound is then used to create other compounds, such as glucose, which can be used for energy.
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Which horizon in a soil profile is known as topsoil? This rich, darker soil is alive with bacteria, algae, and fungi.Question 6 options:horizon Bhorizon Ohorizon Ahorizon C
Answers
Answer:
its horizon O
Explanation:
When the o is h is horizon O
2. Consider dimethyl ether at 300 K which has an angle averaged radius of 0.25 nm. a) Calculate its collision frequency at 1 bar and 1 Pa. b) Calculate its decomposition rate constant k (CH3)2CO produ
Answers
a) The collision frequency of dimethyl ether can be calculated using the kinetic theory of gases. The collision frequency is given by the equation:
\(\[\text{{Collision frequency}} = \frac{1}{4} \sqrt{\frac{8 \cdot k \cdot T}{\pi \cdot m}}\]\)
where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of dimethyl ether molecule. Given that the angle-averaged radius of dimethyl ether is 0.25 nm, we can calculate the mass of the molecule using its density or molar mass.
b) To calculate the decomposition rate constant of (CH3)2CO, we need additional information such as the reaction mechanism and reaction conditions. The rate constant for a chemical reaction depends on factors like temperature, activation energy, and the presence of catalysts. Without these details, it is not possible to calculate the decomposition rate constant accurately.
In conclusion, the collision frequency of dimethyl ether at a specific temperature can be calculated using the kinetic theory of gases. However, to calculate the decomposition rate constant of (CH3)2CO, additional information about the reaction conditions and mechanism is needed.
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Which of the following atoms cannot exceed the
octet rule in a molecule?
A) N
B) S
C) P
D) I
E) All of the atoms (a-d) can exceed the octet
rule
Answers
Of the following atoms cannot exceed the octet rule in a molecule. The answer is E) All of the atoms (A-D) can exceed the octet rule.
The octet rule states that atoms tend to gain, lose, or share electrons in order to achieve a stable electron configuration with eight valence electrons. However, there are certain atoms that can exceed the octet rule and accommodate more than eight electrons in their valence shell due to the availability of vacant d-orbitals. Atoms in the third period or beyond, such as nitrogen (N), sulfur (S), phosphorus (P), and iodine (I), can exceed the octet rule because they have d-orbitals in higher energy levels that can participate in bonding. These atoms can form expanded octets by accepting additional electrons into their d-orbitals, allowing them to accommodate more than eight electrons around the central atom in a molecule. So, all of the atoms A-D (N, S, P, and I) have the potential to exceed the octet rule and form molecules with more than eight electrons around the central atom, making option E the correct answer.
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A car is 35.3 miles down the road from the lizard driving toward it at a speed of 30.5m/s. How long will it take the car to drive 35.3m round to a tenth of a second
Answers
Answer:
t = 3.29 hour
Explanation:
It is given that,
The distance between a car and the lizard is 35.3 miles.
The speed of the car is 30.5 m/s
We need to find how long will it take the car to drive 35.3m.
It means,
Distance, d = 35.3 miles
Since, 1 mile = 1609.34 m
⇒ 35.3 miles = 56809.84 m
Speed, v = 30.5 m/s
Speed, v = d/t
So,
\(t=\dfrac{d}{v}\\\\t=\dfrac{56809.84\ m}{30.5\ m/s}\\\\t=1862.61\ s\)
or
t = 3.3 hour
Hence, it will take 3.3 hour.
Choose the compound below that should have the highest melting point according to the ionic bonding model.
A) AlN
B) MgO
C) NaCl
D) CaS
E) RbI
Answers
According to the ionic bonding model, the compound with the highest melting point is likely to be the one with the strongest ionic bonds.
In the ionic bonding model, compounds form when there is a transfer of electrons from one element to another, resulting in the formation of positive and negative ions. The strength of the ionic bond is influenced by factors such as the charges and sizes of the ions involved.
Among the given compounds, MgO (magnesium oxide) is expected to have the highest melting point. This is because magnesium (Mg) is a metal that tends to lose two electrons and form a 2+ cation, while oxygen (O) is a nonmetal that tends to gain two electrons and form a 2- anion. The resulting Mg2+ and O2- ions have strong electrostatic attraction due to the opposite charges. This strong ionic bond requires a significant amount of energy to break, leading to a high melting point for MgO.
On the other hand, compounds like AlN (aluminum nitride), NaCl (sodium chloride), CaS (calcium sulfide), and RbI (rubidium iodide) also exhibit ionic bonding but with different ion sizes and charges. While these compounds have varying degrees of ionic bonding strength, they are expected to have lower melting points compared to MgO.
In conclusion, based on the ionic bonding model, MgO (option B) is likely to have the highest melting point among the given compounds due to its strong ionic bond resulting from the combination of a 2+ metal cation and a 2- nonmetal anion.
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Determine which gas law applies by identifying the variabi
1. A gas occupies 10 L at 760 mmHg of pressure. What will the new gas pressure be if the volume increases to 20 L?
Answers
Answer:
The gas law that applies in this scenario is Boyle's law, which states that the pressure of a gas is inversely proportional to its volume at constant temperature.
Using Boyle's law equation:
P₁V₁ = P₂V₂
where P₁ is the initial pressure, V₁ is the initial volume, P₂ is the final pressure, and V₂ is the final volume.
Plugging in the given values:
P₁ = 760 mmHg
V₁ = 10 L
V₂ = 20 L
Solving for P₂:
P₂ = P₁V₁/V₂ = 760 mmHg x 10 L / 20 L = 380 mmHg
Therefore, the new gas pressure will be 380 mmHg
By using the combined gas law, which states that the pressure, volume, and temperature of a gas are related by the equation:
P1V1/T1 = P2V2/T2
where:
P1 =initial pressure
V1 =initial volume
P2 and V2 are the final pressure and volume, respectively.
We are given that the initial pressure P1 is 760 mmHg and the initial volume V1 is 10 L. We are asked to find the final pressure P2 when the volume increases to 20 L.
we can rearrange the equation to solve for P2:
P2 = (P1V1/T1) x (T2/V2)
Since the temperature is constant, we can deduce the equation to:
P2 = (P1V1)/V2
Deducing the values we have:
P2 = (760 mmHg x 10 L)/20 L
P2 = 380 mmHg
That implies, the new gas pressure will be 380 mmHg when the volume increases to 20 L.
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help!!!!! please
can someone do this i have NO clue
Answers
Mixture- honey, seawater, blood, mud
element- hydrogen, calcium
compund- magnesium oxide, copperII sulfate, potassium iodide solution.
What do you mean by mixture, element and compunds?A mixture is a material composed of two or more different chemical substances that are not chemically bonded. A mixture is the physical combination of two or more substances that retain their identities and are mixed in the form of solutions, suspensions, and colloids.
Element is a free and open-source instant messaging client that uses the Matrix protocol. End-to-end encryption, private and public groups, file sharing between users, voice and video calls, and other collaborative features are supported by Element via bots and widgets.
A compound is a substance made up of two or more different chemical elements combined in a fixed ratio in chemistry. When the elements combine, they react and form chemical bonds that are difficult to break. These bonds form as a result of atoms sharing or exchanging electrons.
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1. What class of drugs are being investigated in this study, and how do they get into our waterways? 2. What is a C-start and why is it important for larval fish survival? 3. What hypotheses are being tested in this investigation? 4. Briefly describe what the researchers found when they exposed larval fathead minnows to levels of antidepressants found in our waterways.
Answers
The effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.
1. The class of drugs being investigated in this study is antidepressants. They enter our waterways through excretion by individuals taking the medication, and disposal of unused medication into toilets or sinks that are connected to wastewater treatment plants.
2. C-start is an evasive maneuver that young fish use when they perceive a predator. This is important for larval fish survival because it helps them to avoid being eaten by predators.
3. In this investigation, researchers are testing two hypotheses. The first is that exposure to low levels of antidepressants can affect larval fathead minnows' behavior, and the second is that the effects of exposure will be more pronounced in fish that have been raised in a less stressful environment.
4. The researchers found that exposure to antidepressants at levels found in waterways can have a significant impact on the behavior of larval fathead minnows. Specifically, they found that the fish exposed to antidepressants were less likely to respond to the presence of predators, which could increase their risk of being eaten.
They also found that the effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.
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A man decides to lose weight by dieting and exercising. He chooses to reduce his caloric intake by 500 calories a day, and he lifts weights daily as his main form of exercise. After strictly following his diet and exercise plan for two weeks, he finds that even though his waist has shrunk by two inches, he has actually gained weight. The man hypothesizes that his caloric intake is still too high. What might be another possible hypothesis?
Answers
Answer:
he's also gain weight in muscles srry if that doesn't make sense
Explanation:
study island
PZZZZZZZ just Answer this question 20 POINT What happens to the total energy as the skater moves down and up the U-shaped ramp?
Answers
Answer:
The total energy stays the same.
Which of the following flows is not driven by pressure differences?
1: A deep breath
2: A river
3: A gust of wind
4: A sip through a drinking straw
Answers
Answer:
I think it is option (b) river
The river flows is not driven by pressure differences.
The wind often blows due to of differences in air pressure from one location to another. Wind blows often from zones of high pressure toward zones of low pressure and thus when the high pressure point is very close to the low pressure point the wind can blow very fast.But the river is not driven by pressure differences as it flows in its course.Conclusively we can say that the river flows is not driven by pressure differences
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