The major source of indoor air pollution in developing countries is a lead based paints on furniture and walls. b indoor cooking with biomass as a fuel. c synthetic materials in construction of buildings. d release of radon-222 gas.
Answers
Globally, there are serious threats to people's health and safety from indoor air pollution. Many individuals in poor nations are subjected to indoor air pollution, which has significant effects on their lifespan and quality of life. Lead-based paints on furniture and walls, indoor cooking using biomass as a fuel, and synthetic building materials are some of the main contributors to indoor air pollution in developing nations.
construction of buildings, and the release of radon-222 gas. These pollutants can have both short and long-term effects on human health, ranging from mild to severe respiratory problems to cancer and death.In underdeveloped nations, lead-based paints on walls and furniture constitute a substantial source of indoor air pollution. Heavy metal lead is poisonous and can seriously harm the kidneys, central nervous system, and other organs. As well as raising the risk of heart disease, stroke, and other illnesses in adults, lead poisoning can also affect children's cognitive and developmental growth. . Children are particularly vulnerable to lead poisoning, as they may ingest or inhale lead particles while playing on furniture or walls.Indoor cooking with biomass as a fuel isanother important factor in emerging nations' indoor air pollution. Foam insulation, adhesives, and other synthetic materials can over time leak hazardous substances into the atmosphere. From headaches and vertigo to cancer and other serious ailments, these substances can lead to a variety of health issues. Finally, one of the main causes of indoor air pollution in many developing nations is the emission of radon-222 gas. A naturally occurring radioactive gas called radon may enter houses and other structures through foundational cracks and openings. Particularly among smokers, exposure to high levels of radon can raise the risk of lung cancer.In conclusion, indoor air pollution is a serious issue in developing nations, and there are many different reasons why it occurs. furniture painted with lead-based paint,For such more question on synthetic materials
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Related Questions
write a balanced chemical equation for the standard formation reaction of solid water .
Answers
The balanced chemical equation for the standard formation reaction of solid water is: H₂ (g) + 1/2O(g) → H₂O(s)
The standard formation reaction of solid water is: H₂ (g) + 1/2O₂(g) --> H₂O(s)
The balanced chemical equation for the standard formation reaction of solid water is: H₂ (g) + 1/2O(g) → H₂O(s)
The standard enthalpy change of the above reaction can be determined from the enthalpies of formation of the products and reactants using Hess's Law.
Standard enthalpy of formation (∆Hfo) is defined as the amount of heat absorbed or released when one mole of a substance is formed from its constituent elements in their standard states under standard conditions (∆Hfo=0 at 298 K and 1 atm).
Since H₂O(s) is the standard state of water, its standard enthalpy of formation (∆Hfo) is -285.8 kJ/mol. This means that the formation of one mole of solid water releases 285.8 kJ of heat energy.
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Name and title:include your name, instructor's name, date, and name of lab.objectives(s):in your own words, what is the purpose of this lab?hypothesis:in this section, please include the if/then statements you developed during your lab activity. these statements reflect your predicted outcomes for the experiment.if the mass of the sun is 1x, at least one planet will fall into the habitable zone if i place a planet in orbits___, ____, ____, and ____, and all planets will orbit the sun successfully.if the mass of the sun is 2x, at least one planet will fall into the habitable zone if i place a planet in orbits___, ____, ____, and ____, and all planets will orbit the sun successfully.if the mass of the sun is 3x, at least one planet will fall into the habitable zone if i place a planet in orbits___, ____, ____, and ____, and all planets will orbit the sun successfully.procedure:the materials and procedures are listed in your virtual lab. you do not need to repeat them here. however, you should note if you experienced any errors or other factors that might affect your outcome.using the summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.data:record your observation statements from space academy.when the mass of the sun is larger, earth moves around the sun at a ______ (faster, slower) pace.when the mass of the sun is smaller, earth moves around the sun at a ______ (faster, slower) pace.when earth is closer to the sun, its orbit becomes _____ (faster, slower).when earth is farther from the sun, its orbit becomes _____ (faster, slower).for each trial, record the orbit number of each planet from the sun. be sure to indicate the number of planets in the habitable zone after each trial. create a different configuration of planets for each trial. an example has been supplied for you. orbit numberplanet one orbit numberplanet two orbit numberplanet three orbit numberplanet four number of planets in the habitable zone number of planets left in successful orbitexample: sun's mass 1x 135612sun's mass 1x—trial one sun's mass 1x—trial two sun's mass 2x—trial one sun's mass 2x—trial two sun's mass 3x—trial one sun's mass 3x—trial two conclusion:your conclusion will include a summary of the lab results and an interpretation of the results. please answer all questions in complete sentences using your own words.using two to three sentences, summarize what you investigated and observed in this lab.you completed three terra forming trials. describe the how the sun's mass affects planets in a solar system. use data you recorded to support your conclusions.in this simulation, the masses of the planets were all the same. do you think if the masses of the planets were different, it would affect the results? why or why not?how does this simulation demonstrate the law of universal gravitation?it is the year 2085, and the world population has grown at an alarming rate. as a space explorer, you have been sent on a terraforming mission into space. your mission to search for a habitable planet for humans to colonize in addition to planet earth. you found a planet you believe would be habitable, and now need to report back your findings. describe the new planet, and why it would be perfect for maintaining human life.
Answers
If the mass of the sun is 1x, at least one planet will fall into the habitable zone if I place a planet in orbits 2, 6, and 75, and all planets will orbit the sun successfully.
If the mass of the sun is 2x, at least one planet will fall into the habitable zone if I place a planet in orbits 84 , 1, and 5, and all planets will orbit the sun successfully.
If the mass of the sun is 3x, at least one planet will fall into the habitable zone if I place a planet in orbits 672 and 7, and all planets will orbit the sun successfully.
When the mass of the sun is larger, Earth moves around the sun at a faster pace.When the mass of the sun is smaller, Earth moves around the sun at a slower pace.When Earth is closer to the sun, its orbit becomes faster.When Earth is farther from the sun, its orbit becomes slower.What would occur if the Earth was closer to the sun?When Earth is closer to the sun, there will be hotter climate. A little movement that takes one closer to the sun could lead to a huge impact.
Due to the fact that there is warming that can make the glaciers to melt, there is an increase in the sea levels and flooding occurs in a lot of areas of the planet and when there is no land to absorb some of the sun's heat, the temperatures on Earth would tend to rise more.
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2. Which of the following is/are TRUE regarding net ionic equations?
A. Net ionic equations show only the particles directly involved in the
chemical change.
B. Spectator ions are included in complete equations, but not in net ionic
equations.
C. lonic charges do not need to be balanced in a net ionic equation.
D. Combustion, combination, and decomposition reactions can be written as
net ionic equations.
Answers
A and B are true.
C and D are false.
Out of the given four statements, A and B are only correct.
Explanation:
In the complete equation of a chemical reaction, the complete symbols of reactants and products are written along with states of matter under conditions at which the reaction is taking place.In the net ionic equation of a chemical reaction, only those chemical species are written which directly participating in the chemical reaction.The mass and charge in the net ion equation must be balancedIt is used in neutralization reactions, redox reactions, double displacement reactions.So from this, we can conclude that out of the given four statements, A and B are only correct.
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Consider the following pair of reactions. Predict the type of substitution mechanism, predict which reaction of the pair will occur at the faster rate, and draw the correct organic product
Answers
The reaction with S_N₂mechanism is likely to be faster than the reaction with S_N₂ mechanism. This is because the carbocation intermediate formed in S_N₁ mechanism is more stable.
The pair of reactions given below is:
CH₃Cl + NaOH→CH₃OH + NaCl
CH₃I + NaOH→CH₃OH + NaI
The type of substitution mechanism:
The first reaction involves S_N₁ mechanism (unimolecular nucleophilic substitution). The second reaction involves S_N₂ mechanism (bimolecular nucleophilic substitution).
Prediction of the reaction that will occur at a faster rate:
The reaction with S_N₁ mechanism is likely to be faster. The rate of this reaction mainly depends on the stability of the carbocation intermediate formed after the initial step. In this case,CH₃Cl reacts to form a tertiary carbocation which is more stable than the primary carbocation formed in CH₃I.
Drawing the correct organic product:
CH₃Cl + NaOH→CH₃OH + NaCl
CH₃I + NaOH→CH_3OH + NaI
CH₃C reacts with NaOHin an S_N₁ mechanism to produceCH₃OH and NaCl.
CH₃ reacts withNaOH in an S_N₂mechanism to produce CH₃OH and NaCI.
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How do you think the -OH on the end of the pentanol molecule will affect the surface tension? Will pentanol have greater surface tension, less surface tension, or about the same surface tension as pentane or hexane? Write a prediction in the space below, and then submit your answer to move to the next section.
Answers
The -OH on the end of the pentanol molecule will affect the surface tension as it will be higher as that of as pentane or hexane.
What is Surface tension?This is referred to as the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid.
It minimizes the surface area and the higher strength of the intermolecular force is present in the pentanol therefore the surface tension of the pentanol is more than surface tension of the pentane and hexane.
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What is the balance of this reaction=1N2+3H2=2NH3
Answers
N2 + 3 H2 = 2 NH3
Reaction type: synthesis
Perform the following mathematical operation and report the answer to the appropriate numbers of significant figures. 7.273-12.37=?
Answers
7.273 - 12.37 = -5.097
Answer:
-5.10
Explanation:
7.273 - 12.37 = -5.097
round up!
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what does it mean if the thermometer temperature suddenly drops in the middle of your distillation?
Answers
As the distillation head fills with the vapors of lower-boiling compound, the head temperature rises.
What happens to the temperature when you just distill something?
The temperature at which the solution must boil rises as the distillation goes on because the more volatile component boils out quicker. As a result, the distillate's composition varies with time. Because the lower-boiling compound completes the distillation process before the higher-boiling compound's vapors can fill the distillation head and raise the head temperature, the temperature lowers. The lower boiling liquid has finished its distillation process, leaving just the upper boiling liquid, which causes the temperature to begin to fall.
As a result, the impure liquid must be heated up in the flask it is contained in before it can begin to evaporate and reach the thermometer on top.
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The molar solubility of CoS is 5.0 x 10^-22 mol L-1 in pure water. Calculate the Ksp for Cos. 1.6 x 10^-35 2.5 x 10^-43 4.7 x 10^-6 5.0 x 10^-22 2.2 x 10^-11
Answers
The Ksp for CoS, whose molar solubility of is 5.0 x 10^-22 mol L-1 in pure water, is 2.5 x 10^-43.
To calculate the Ksp (solubility product constant) for CoS (cobalt sulfide) using its molar solubility:
1. Write the balanced chemical equation for the dissolution of CoS:
CoS (s) ⇌ Co²⁺ (aq) + S²⁻ (aq)
2. Given the molar solubility of CoS is 5.0 x 10^-22 mol L⁻¹, this means that the concentrations of Co²⁺ and S²⁻ ions in the solution are also 5.0 x 10^-22 mol L⁻¹.
3. Use the Ksp expression, which is the product of the concentrations of the ions raised to the power of their coefficients:
Ksp = [Co²⁺] x [S²⁻]
4. Substitute the concentrations of Co²⁺ and S²⁻ ions into the Ksp expression:
Ksp = (5.0 x 10^-22) x (5.0 x 10^-22)
5. Calculate the Ksp value:
Ksp = 2.5 x 10^-43
The Ksp for CoS is 2.5 x 10^-43.
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what are true about bonds
Answers
Answer:
a.
Explanation:
which statmemt is true for most chemical reactions an energy change occurs during the breaking and forming of bonds
Answers
An energy change occurs during the breaking and forming of bonds is true for most chemical reactions an energy change occurs during the breaking and forming of bonds .
Chemical bonds between atoms and molecules can break and form during chemical reactions. Existing bonds must be broken in order for new ones to form, which releases energy during the process. The enthalpy change or overall energy change during a chemical reaction is typically expressed as the energy difference between the products and the reactants.
Depending on whether energy is absorbed or released during a reaction, the enthalpy change can either be positive or negative. The reaction is exothermic and energy is released if the enthalpy of the products is lower than the enthalpy of the reactants. The reaction is endothermic and energy is absorbed if the enthalpy of the products is greater than the enthalpy of the reactants.
The question is incomplete, complete question will be "Which statement is true for most chemical reactions?
An energy change occurs during the breaking and forming of bonds.
The internal energy of the system increases during a reaction.
Energy is released during the formation of reactants.
The enthalpy of the products is higher than the enthalpy of the reactants."
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A plot of the Maxwell distribution of velocities for a number of different gases measured at the same temperature shows that
Answers
Answer:
as molecular mass increases, more molecules have speeds close to their average speed.
Explanation:
A plot of the Maxwell distribution of velocities for several different gases measured at the same temperature shows that "as molecular mass increases, more molecules have speeds close to their average speed."
This is evident in the fact that the Maxwell distribution of speeds for a given selection of gas at a given temperature shows certain traits if one of the main variables is changed, such as
1. Mass: The proportion of speeds for a given selection of gas is narrower and the average speed is lower for gas of higher molecular weight.
2. Temperature: The proportion of speeds for a given selection of gas is wider and the average speed is higher as the temperature of a gas increases.
Which is the balanced version of the half-reaction below?
Answers
Answer:
The answer is B
Explanation:
Because H2S →S + 2HplusChoose the correct missing coefficient to balance the following equation:
___NO + O2 ---> 2NO2 *
1
2
3
4
Answers
Answer:
the answer is 2 hope this helps
common things of all metals
Answers
Answer: Well most if not all metals rust due to oxidation. Most can be melted at certain temperatures or just heated to a certain degree to be maluable
Explanation:
Which is not true? Question 1 options: Cold currents cause nearby coastlines to be colder. Warm currents cause nearby coastlines to be warmer. Oceans move more slowly than wind. Oceans hold more heat than atmosphere on land. Currents are made by wind blowing over the water.
Answers
Currents are made by wind blowing over the water.
Explanation:Currents created by wind are formed through the use of warm and cold air. The warm air becomes lighter through expansion, causing it to rise and transform into a warm air current. Cool air is heavier than the warm air, which makes it move to replace the warm air, thus forming a cool air current.
In short, currents are not made by wind blowing over water, but by the characteristics of warm and cool air acting on one another.
Additionally, the rest of the answers can easily be proven true.
Cold currents do cause nearby coastlines to become colder. This is because these winds blow into the coast and affect the temperature. The process also applies to warm air. Warm air can blow into the coastline and warm the area. (With this, both "Cold currents cause nearby coastlines to be colder," and "Warm currents cause nearby coastlines to be warmer," have been shown to be truthful.)
Oceans more more slowly than wind is also correct. The ocean is an uninterrupted surface which winds can peacefully blow across. This lack of disruption causes the winds to move quickly - much faster than even the ocean itself. The ocean('s) currents move slower than the winds. (Therefore, "Oceans move more slowly than wind," had been proven true.)
Oceans hold more heat than atmosphere on land has a simple explanation: the Sun. As we know, this humongous, fiery star we depend on for survival spreads its sunlight all over Earth. The oceans are no exception. The ocean(s) absorb(s) this sunlight and transform(s) it to heat and energy. Since water has a higher capacity for heat compared to air, it can store larger amounts of heat with less of a change in temperature (than air). (For that reason, "Oceans hold more heat than atmosphere on land," is indeed a factual statement.)
All of the options, apart from Currents are made by wind blowing over the water, have been proven true. With that being said, our answer is clear. (Hope this helps - have a lovely week!)
Answer:
currents are made by wind blowing over the water
Explanation:
In which direction does weather typically move? a. from east to west c. from north to south b. from west to east d. from south to north *this is the next question on the test and the answer is FROM WEST TO EAST*
Which of these describe a warm front?
Warm and cool air mass that are not strong enough to move one another
Cold air meets warm air, fast moving and stormy. Severe weather is likely.
Warm air meets cold air. Slow moving with less severe weather.
Ocean surface temperature is greater than 80F.
*these are the third question answers and there are no brainly answers online, so the answer to this one is, WARM AIR MEETS COLD AIR. SLOW MOVING WITH LESS SEVERE WEATHER.*
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When zinc reacts with copper sulfate solution, zinc sulfate solution and copper are formed. (i) An experiment was carried out to measure the temperature change when zinc powder reactswith copper sulfate solution. Initial temperature of copper sulfate solution = 20 °Cfinal temperature of mixture after the reaction = 46 °CExplain what the temperature readings show about the type of heat change that occurs duringthis reaction
Answers
Answer:
it is an endothermic reaction
Explanation:
This is because there is a rise in temperature from 20 to 46. this means that the reaction takes in heat from the suuroundings
I really need help with this before 4:50
Your Uncle Danny just moved into a new apartment and wants to make his famous spaghetti sauce for his new
neighbors. Unfortunately, he hasn't unpacked all of his kitchen utensils. His recipe calls for ' a cup of
oregano, however he can only find a teaspoon to measure out his spices. How many teaspoons of oregano
would be the same as a cup?
Answers
Answer:
48 teaspoons
Explanation:
1 cup equals 48 teaspoons.
An amoeba is a one-celled organism. The cell theory states that which of the following characteristics of amoebas must be true?All amoebas have a regular, spherical shape.All amoebas move rapidly using a cilia.All amoebas have organelles called chloroplasts.All amoebas come from other amoebas.
Answers
Answer:
I believe the answer is all amoeba come from other amoeba
An organic compound was analyzed and found to contain 70.6% carbon, 5.9% hydrogen, and 23.5% oxygen by mass. Additionally, the molar mass of the compound was experimentally determined to be 136 g/mole. What is the molecular formula for the compound?How many grams of MgCl2 would be required to prepare 250 mL of a 0.8 M solution of that solute in water? Please report your answer to two digits after the decimal place.
Answers
This substance's chemical formula is C₈H₈O₂ and To create the 0.8 M solution, 19.04 g of MgCl₂ must be dissolved in 250 mL of water.
How is a molecular formula composed?The chemical formula for a chemical compound's molecular formula lists the variety of atoms that make up the molecule.
Briefing:Assuming we have 100 g of the molecule, the masses of its constituent parts are as follows in order to get its molecular formula:
-70.6 g of carbon
-5.9 g of hydrogen
-23.5 g of oxygen
We next divide these masses by the molar masses of the constituent components to obtain the moles:
-carbon: 70.6 g / 12 g/mol = 5.88 mol
-hydrogen: 5.9 g / 1 g/mol = 5.9 mol
-oxygen: 23.5 g / 16 g/mol = 1.47 mol
To get the molar ratio, divide the moles by the least number (1.47 mol for oxygen):
-carbon: 5.88 mol / 1.47 mol = 4
-hydrogen: 5.9 mol / 1.47 mol = 4
-oxygen: 1.47 mol / 1.47 mol = 1
As a result, we have the empirical formula:
This empirical formula's molar mass is
4 x 12 g/mol + 4 x 1 g/mol + 16 g/mol = 68 g/mol
In order to arrive at our final result, we divide the molar mass of our compound by the molar mass of the empirical formula.
136 g/mol / 68 g/mol = 2
We multiply the index numbers by 2 to get the molecular formula C₈H₈O₂.
The following equation is used to determine how much MgCl2 is required to make a 0.8 M solution of it in 250 mL (0.250 L):
c = n/V ⇒ n = c * V
c - molarity of the solution (0.8 M)
n - number of moles of solute
V - the volume of the solution
Now we plug in the values we have:
n = 0.8 M * 0.250 L
n = 0.2 mol
Now, we can determine the mass of the solute using the molar mass of MgCl2 (M = 95.211 g/mol):
n = m/M
m = n * M
m - the mass of the substance
m = 0.2 mol * 95.211 g/mol
m = 19.04 g
Therefore, 19.04 g of MgCl2 are required to create a 0.8 M solution in 250 mL.
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If the metal from problem 4 was initially at room temperature (22 0 C), what would the final temperature of the metal be? You know that you add 120 joules of energy to the metal. What change in temperature would you observe Q = is energy as Heat, 120 Joulesm = mass in grams, 5.0 gramsc = is the specific heat capacity, 0.385 J/g°CΔT = the change in temperature, calculated as Final Temperature - Initial T120 = 5 * 0.385 * T120 = 1.925TT = 62°C of change in temperature
Answers
The question is mostly solved. The definition of heat is used for this problem which tells us:
\(Q=mCp\Delta T\)Where,
Q is the heat added to the system, 120 J
m is the mass of the metal, 5.0 g
Cp is the specific heat of the metal, 0.385J/g°C
dT is the change of temperature:
\(\Delta T=T_2-T_1\)T2 is the final temperature, unknown
T1 is the initial temperature, 22°C
We clear the final temperature from the equation:
\(\begin{gathered} Q=mCp(T_2-T_1) \\ Q=mCpT_2-mCpT_1 \\ T_2=\frac{Q+mCpT_1}{mCp} \end{gathered}\)Now, we replace the known data:
\(T_2=\frac{120J+5.0g\times0.385\frac{J}{g\degree C}\times22\degree C}{5.0g\times0.385\frac{J}{g\degree C}}\)\(\begin{gathered} T_2=\frac{120+5.0\times0.385\times22}{5.0\times0.385}\degree C \\ T_2=84\degree C \end{gathered}\)Answer:
The final temperature of the metal will be 84°C
The change in the temperature will be 84°C-22°C=62°C
Please help and I will give brainliest!
Answers
I am going to put them in order
R r
R RR rR
r rR rr
Plants have various levels of organization. At which level of organization are the smallest structures in a plant?
Cellular
Organ
Organism
Tissue
Answers
10.8 1.0
Electronegativity difference of Mg and O:
yes
no
Answers
Answer:
2.3 / yes
Explanation:
edg 2020
Answer: 2.3 and yes
Explanation:
explain with example the combination and decomposition reaction.
Answers
Answer:
Decomposition reactions require an input of some form of energy. For example, under the influence of an electric field, water breaks down to give hydrogen and oxygen. In the presence of sunlight, hydrogen peroxide decomposes into oxygen and water.
which of the following are advantages of using pbr3 instead of the strong acid hbr for this transformation? choose one or more: a. the reaction occurs under mild conditions. b. hbr is very mild, so other functional groups in the molecule would not be a concern. c. the reaction does not lead to carbocation rearrangements. d. the reaction does not lead to elimination products. e. the reaction requires high temperatures. f. the reaction is stereospecific.
Answers
The advantages of using PBr₃ instead of the strong acid HBr for this transformation is the reaction occurs under mild conditions.The correct answer is A.
Alkyl halides can be produced from alcohols using phosphorus tribromide (PBr₃ ). The structure at carbon is inverted during the reaction with PBr₃ .
Since it prevents the potential of carbocation rearrangements, employing PBr₃ to transform alcohols into alkyl halides is much milder and more predictable than doing it with HBr or HCl.
You might think of the two steps that this reaction takes as "activation" and "substitution." By creating a bond with P (O-P bonds are highly strong) and displacing Br from P during the "activation" process (notice that this is effectively nucleophilic substitution at phosphorus), the alcohol is transformed into a suitable leaving group.
After being "activated," or changed into a suitable leaving group, oxygen can now participate in a substitution process at carbon.
By using a backside attack (SN2) to attack carbon, the bromide ion that was displaced from phosphorus breaks down carbon and forms C-Br, leaving behind a new alkyl bromide with an inverted structure and the Br₂P-OH leaving group.
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Describe hydrogen's atomic structure and its molecular structure.
Answers
Explanation:
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.
Names: hydrogen atom, H-1, protium, ¹H
Protons: 1
Neutrons: 0
Symbol: 1H
Answer:
The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also associated with this nucleus.
Explanation:
Determine the ph of a solution made by dissolving 400.0 of sodium acetate dissolved in 100.0 of 0.100 acetic acid.
Answers
The pH of a solution made by dissolving 400.0 g of sodium acetate in 100.0 mL of 0.100 M acetic acid is determined by the equilibrium between acetic acid and its conjugate base. With the pKa value for acetic acid (4.76), we can substitute these values into the Henderson-Hasselbalch equation to find the pH of the solution.
The pH can be calculated using the Henderson-Hasselbalch equation, which is pH = pKa + log([A-]/[HA]), where [A-] represents the concentration of the conjugate base (sodium acetate) and [HA] represents the concentration of the acid (acetic acid). In this case, acetic acid is in excess, so it acts as the limiting reagent. Using the given information, we can calculate the concentration of acetic acid ([HA]) as 0.100 M and the concentration of sodium acetate ([A-]) as 0.400 M (after converting grams to moles and mL to liters). With the pKa value for acetic acid (4.76), we can substitute these values into the Henderson-Hasselbalch equation to find the pH of the solution.
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At the end of seafloor spreading, where does the molten rock solidify?
Answers
Answer:
As the two plates move apart from each other, which often occurs at a rate of several centimetres per year, molten rock wells up from the underlying mantle into the gap between the diverging plates and solidifies into new oceanic crust. Spreading centres are found at the crests of oceanic ridges.
Explanation:
I found this answer by taking notes in class
Answer:
0k HI! so the answer is A
Explanation:
hope is helpful
The chemical weathering process known as oxidation would be most effective in the breakdown of which of the following Earth minerals?
pyroxenes
quartz
calcite
halite
feldspar
Answers
The chemical weathering process known as oxidation would be most effective in the breakdown of pyroxenes, quartz, calcite, and feldspar Earth minerals.
Oxidation is a chemical reaction between oxygen and other substances in the environment which causes a breakdown of the Earth minerals, resulting in their decomposition. Halite, or sodium chloride, is an example of a mineral that is not affected by the oxidation process.
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