The detector with the highest sensitivity for determination of acetone is the flame ionization detector.
Flame ionization detector is the most widely used detector for gas chromatography. It is highly sensitive for organic compounds like acetone. FID detectors are best suited for organic compounds, and they work on the principle that the organic compounds get ionized by the hydrogen flame and generate electrons.
These electrons pass through an electrical field, which produces a signal that is proportional to the number of ions present. This detector has the highest sensitivity for determination of acetone.
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How is a double displacement reaction completed and balanced
A double displacement reaction is a type of reaction in which two reactants exchange ions to form two new compounds. Many double displacement reactions occur between ionic compounds that are dissolved in water. A double replacement reaction is represented by the general equation.
Saved Which chemical equation describes an acid-base neutralization reaction? Multiple Choice
The chemical equation that describes an acid-base neutralization reaction is: acid + base → salt + water For example: HCl + NaOH → NaCl + H₂O
An acid-base neutralization reaction occurs when an acid reacts with a base, resulting in the formation of water and a salt. The chemical equation that describes an acid-base neutralization reaction is:
Acid + Base → Salt + Water
An example of this type of reaction would be the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH):
HCl + NaOH → NaCl + H₂O
In this reaction, the hydrochloric acid and sodium hydroxide combine to form sodium chloride (a salt) and water.
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Which of these statements relating to ecological succession is true?
During succession, there is no change to the physical or chemical environment.
During succession, existing species resist interaction with new species.
During succession, new species move into an area and colonize it.
Most ecological successions occur over 10 to 15 years.
Answer: During succession, new species move into an area and colonize it.
Explanation: Ecological succession refers to the process of change in the composition and structure of an ecosystem over time. It occurs due to the interactions between the biotic (living) and abiotic (non-living) components of an environment. As succession progresses, new species gradually establish and thrive in the area, leading to a change in the species composition. This process can occur over a long period of time, ranging from decades to centuries, depending on various factors such as environmental conditions and the specific type of succession.
what is a limitation of using a chemical formula, such as C6H12O6, to represent a compound?
A.The chemical formula does not show the types of elements that make up the compound.
B.The chemical formula does not show how the atoms are connected to one another.
C.The chemical formula does not show the number of atoms of each element in a molecule.
D.The chemical formula does not show the chemical symbols of the elements in the compound.
Answer:
B
The chemical formula does not show how the atoms are connected to one another
Answer:
b
Explanation:
edge 2020
A solution made by dissolving 25. 0 mg of insulin in 5. 00 mL of water has an osmotic pressure of 15. 5 mmHg at 25°C. Calculate the molar mass of insulin. (Assume that there is no change in volume when the insulin is added to the water and that insulin is a non-dissociating solute. )
The molar mass of insulin is approximately 0.798 g/mol, calculated using the equation for osmotic pressure and the given values of mass and volume.
To calculate the molar mass of insulin, we can use the equation for osmotic pressure:
π = (n/V)RT
where π is the osmotic pressure, n is the number of moles of solute, V is the volume of the solution in liters, R is the ideal gas constant, and T is the temperature in Kelvin.
First, convert the given values to appropriate units:
25.0 mg = 0.025 g
5.00 mL = 0.005 L
Next, rearrange the equation to solve for n (number of moles):
n = (πV) / (RT)
Substituting the given values:
n = (15.5 mmHg * 0.005 L) / ((0.0821 L·atm/(mol·K)) * 298 K)
Calculate n:
n ≈ 0.0313 mol
Finally, divide the mass of insulin (0.025 g) by the number of moles (0.0313 mol) to find the molar mass:
Molar mass = 0.025 g / 0.0313 mol
Molar mass ≈ 0.798 g/mol
So, the molar mass of insulin is approximately 0.798 g/mol.
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This question considers two applications of systems of linear equations. The sys- tems should be solved using Gaussian elimination.
(a) Balance the chemical reaction below involving carbon (C), hydrogen (H), and oxygen (O). In other words, find the smallest positive integers x, y, z, w so that the reaction is balanced by setting and solving a system of linear equations. Give the balanced chemical reaction.
xCO₂ + yH₂O → 2C6H12O6 + wO2.
This is called the photosynthesis reaction, and C6H12O6 is glucose.
The balanced chemical reaction using a system of linear equations is 24CO₂ + 24H₂O → 2C₆H₁₂O₆ + 12O₂
How to balance chemical reaction?In the chemical reaction given, to balance:
xCO₂ + yH₂O → 2C₆H₁₂O₆ + wO₂
Set up the equations. Have the same number of each type of atom on each side of the equation.
For carbon (C):
x = 262 (12 carbon atoms in each C₆H₁₂O₆ and there are 2 of them)
For hydrogen (H):
2y = 2122 (12 hydrogen atoms in each C₆H₁₂O₆ and there are 2 of them)
For oxygen (O):
2x + y = 1222 + 2w (6 oxygen atoms in each C₆H₁₂O₆, there are 2 of them, and there are 2 atoms in each O2)
From the first two equations x = 24 and y = 24.
Substituting x and y into the oxygen equation gives:
224 + 24 = 122*2 + 2w
72 = 48 + 2w
2w = 24
w = 12
So, the balanced chemical reaction is:
24CO₂ + 24H₂O → 2C₆H₁₂O₆ + 12O₂
This is the photosynthesis reaction, which converts carbon dioxide and water into glucose and oxygen, with the help of sunlight.
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The concentration of Na in compartment A is 10%, while the concentration of Na in compartment B is 5%. With regards to Na concentration, compartment A would be referred to as __________, while compartment B would be referred to as __________. g
In terms of sodium concentration, compartment A would be referred to as hypertonic, while compartment B would be referred to as hypotonic.
The terms hypertonic and hypotonic describe the relative concentration of solutes in two different compartments.
In this case, compartment A has a higher concentration of sodium (10%) compared to compartment B (5%). A hypertonic solution has a higher concentration of solutes compared to another solution. Therefore, compartment A is hypertonic in relation to compartment B.
On the other hand, a hypotonic solution has a lower concentration of solutes compared to another solution. Hence, compartment B is referred to as hypotonic in relation to compartment A due to its lower sodium concentration.
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94. 2 ml of 3. 8 Molar Rubidium Carbonate is mixed with 38. 2 ml of 5. O Molar Barium Acetate to form a precipitate:
1)Calculate the theoretical mass in grams of the precipitate using only the volume and molartity of the barium acetate
Given that the volume and molarity of barium acetate are 38.2 ml and 5.0 M, respectively. We need to find the theoretical mass in grams of the precipitate. Let's first write the balanced chemical equation for the reaction taking place: Rubidium Carbonate + Barium Acetate → Barium Carbonate + Rubidium AcetateRb2CO3(aq) + Ba(C2H3O2)2(aq) → BaCO3(s) + 2 RbC2H3O2(aq).
We can see that 1 mole of barium acetate reacts with 1 mole of barium carbonate. Hence, the molar ratio of barium acetate and barium carbonate is 1:1.Using the molarity and volume of barium acetate, we can find the moles of barium acetate as: Moles of barium acetate = Molarity × Volume in litres= 5.0 mol/L × (38.2/1000) L= 0.191 moles. Now, from the balanced chemical equation, we can see that 1 mole of barium carbonate is formed from 1 mole of barium acetate.
Therefore, the number of moles of barium carbonate formed will also be 0.191 moles. Now, let's calculate the mass of barium carbonate using its molar mass. Molar mass of BaCO3= (1 × atomic mass of Ba) + (1 × atomic mass of C) + (3 × atomic mass of O)= (1 × 137.33 g/mol) + (1 × 12.01 g/mol) + (3 × 16.00 g/mol)= 197.33 g/mol. Theoretical mass of BaCO3= Number of moles of BaCO3 × Molar mass of BaCO3= 0.191 mol × 197.33 g/mol= 37.7 g. Therefore, the theoretical mass of the precipitate is 37.7 g (approx) when only the volume and molarity of the barium acetate are taken into account. Note: In order to find the limiting reagent and the actual mass of the precipitate formed, we need to consider the volume and molarity of both the reactants.
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A ____ is an environment in which all of an organism’s needs are met.
Answer:
habitat?
Explanation:
What is the Color of trioxonitrate
Answer:
And the ans is yellowish
how to describe Pure science?
Answer:
Explanation:
Pure Science is a science that derives theories and predictions. Pure Science can also known as natural Science, basic science or fundamental science. Pure sciences deals with the study of natural phenomena through observation, experimentation and use of scientific methods.
Pure science is often conducted in a laboratory.The main objective of pure science is to increase information of a particular field of study and develop scientific theories.
Answer:
This is the development of the scientific theories and predictions such as in CHEMISTRY, PHYSICS and BIOLOGY.
Explanation:
It deals withe the study of Natural phenomena through observation, experiments and scientific methods.
Write three sentences that provide evidence supporting your claim about how the illustration and student observations support the cell theory?
Answer:
The cell theory claims these three components:
1. cell is the smallest functional unit of life: It can be observed under the microscope that cells have various type of molecules and organelles present and have adifferent functional role in the cell which explains that the cell is the smallest unit of life as its molecules or organelles can not carry the life process on their own.
2. All organisms are made up of cells: From bacteria and archaea to human and other life forms are made up of a single cell or organization of cells in a specific pattern it also can be observed by the microscopic of blood or other tissue or cell of an organism.
3. Arise from pre-existing cell: The cells are can be studied under a microscope during cell division where we can observe that new cells come from the pre existing cell by the cell division.
what is the relationship between kinetic energy and velocity ?
What is NaHCO3 = Na2CO3 + H2O + CO2 as a balanced equation?
I need help on this asap
1. When 17 moles of \(C_3H_8\) are burned, 85 moles of O2 are formed.
2. 1.205 moles of NH3 would be (1/2) * 1.205 to 0.6025 moles of N2.
3. MgO will be produced from 0.107 mol of Mg.
4. When 2.04 moles of potassium phosphate react, an amount of potassium nitrate is formed that weighs approximately 618.732 grams.
1. From the equation, which is balanced:
\(C_3H_8 + 5 O_2 --- > 3 CO_2 + 4 H_2O\)
As can be seen, the reaction between 1 mole of C3H8 (propane) and 5 moles of O2 produces 3 moles of CO2. Therefore, if 17 moles of C3H8 are burned, we can determine the number of moles of O2 that result:
O2 moles = 5/1 * 17 = 85 moles.
As a result, when 17 moles of \(C_3H_8\) are burned, 85 moles of O2 are formed.
2. From the equation at equilibrium:
\(2 NH_3 --- > N_2 + 3 H_2\)
According to stoichiometry, 2 moles of NH3 (ammonia) break down to give 1 mole of N2. We need to convert the mass of 20.5 g of NH3 into moles:
The formula for NH3 moles is mass / molar mass, which is 20.5 g / (14 g/mol + 3 * 1 g/mol) = 20.5 g / 17 g/mol, or 1.205 mol.
As a result, according to the equation, 2 moles of NH3 result in 1 mole of N2. As a result, 1.205 moles of NH3 would be (1/2) * 1.205 to 0.6025 moles of N2.
3. From the equation at equilibrium:
\(2 Mg + O_2 --- > 2 MgO\)
According to stoichiometry, 2 moles of magnesium contain 2 moles of magna oxide. We need to convert the mass into moles because we have 2.61 grams of magnesium:
The mass/molar mass is equal to 2.61 g/24.31 g/mol, or 0.107 mol magnesium.
According to the equation, 2 moles of magnesium give 2 moles of magnesium oxide. Therefore MgO will be produced from 0.107 mol of Mg.
4.According to the equation, which is balanced:
\(2 K_3PO_4 + 3 Al(NO_3)_3 --- > 6 KNO_3 + AlPO_4\)
According to stoichiometry, 2 moles of K3PO4 react to form 6 moles of KNO3. We can determine the moles of KNO3 produced based on the fact that we have 2.04 moles of K3PO4:
Moles of KNO3 = 6/2 * 2.04 = 6.12 moles
We must multiply the moles by the molar mass of potassium nitrate (KNO3) to determine its mass:
Mass of KNO3 = Moles of KNO3 * molar mass of KNO3
= 6.12 * (39.1 g/mol + 14.01 g/mol + 3 * 16 g/mol)
= 6.12 * 101.1 g/mol
= 618.732 g
Therefore, when 2.04 moles of potassium phosphate react, an amount of potassium nitrate is formed that weighs approximately 618.732 grams.
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A compound contains 29.27% carbon, 51.22% nitrogen, and 19.50% oxygen. What is the molecular formula if the molar mass is 570.5 grams?
Answer:
its either A or B most likley A if im wrong then im sorry.
Explanation:
have a wonderfull day
4 Cu₂O + CH4 →→→→ 2 H₂O + 8 Cu + CO2
If 10 g of Cu₂0 are reacted, how many grams of Cu are produced?
Answer:
8.9 grams of Cu (copper).
Explanation:
We have a balanced equiation, so lets solve this by first converting the Cu₂O to moles and then use the equation coefficients to find the moles of Cu we should expect to find.
10 grams of Cu₂O is (10 g/(143.1 g/mole) =0.070 moles of Cu₂O.
The balanced equation promises that we'll obtain 8 moles of Cu for every 4 moles of Cu₂O. That's a molar ratio of 8/4 or 2 (moles Cu/mole Cu₂O).
Therefore: (0.070 moles of Cu₂O)*(2 moles Cu/mole Cu₂O) = 0.140 moles Cu.
(0.140 moles Cu)*(63.55 g/mole Cu) = 8.9 grams of copper
A lot of work for a little copper. Next time, try MgO. It would be fun to ignite it after the synthesis.
When setting up the distillation setup, which port on the condenser serves as the water inlet?
The answer would be the round- bottom flask. When setting up the distillation setup and the round-bottom flask port serves as the water inlet.
As the round-bottom flasks is used for the boiling and also known as boiling flask.
Hence it permit the flask to have a uniform heating all over the process. The heat dispense equally in the entire process.
It is also called as RB flask.
Discovered by Emil Erlenmeyer and this equipment made from Pyrex glass.
Round-bottom flasks are the kind of flasks having spherical bottoms used as experimental glassware, generally used for chemical or biochemical work.
Hence, The port farthest from the RB flask.
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If anyone can help with this thank you
Please help i dont understand how to do this, and if you answer please show your work for it
Calculate the mass of (the ^ means exponent)
7.06 x 10^23 He atoms
1.07 x 10^23 Mg atoms
4.06 x 10^22 molecules of O2
8.19 x 10^24 molecules CO
Calculate the volume of
2800 g of C6H1206
45 moles of H2O
9.2 grams of Fe
2.8 x 10^26 particles of Al2O3
5.6 moles of H2SO3
The Avogadro's number is used to obtain the required results as;
1) 4.69 g
2) 4.26 g
3) 2.158 g
4) 381 g
5) 348.5 L
6) 1008 L
7) 3.6 L
8) 4.7 * 10^4 g
9) 112 L
What is the Avogadro’s number?The Avogadro’s number could be used to deduce the amount of substance. Let us recall that in the theory of Professor Avogadro, the mole is the number of elementary entities of a substance. In this case these elementary entities is a reference to the atoms, molecules and ions that could be found in the substance. With that in mind, we shall now carry out the calculations.
1) 6.02 * 10^23 atoms of helium has a mass of 4g
7.06 x 10^23 He atoms of He has a mass of 4.69 g
2) 6.02 * 10^23 atoms of Mg has a mass of 24 g
1.07 x 10^23 Mg atoms has a mass of 4.26 g
3) 6.02 * 10^23 molecules of O2 has a mass of 32 g/mol
4.06 x 10^22 molecules of O2 has a mass of 2.158 g
4) 6.02 * 10^23 molecules of CO has a mass of 28 g
8.19 x 10^24 molecules CO has a mass of 381 g
5) Number of moles = 2800g/180 g/mol = 15.56 moles
Given that 1 mole occupies 22.4 L
15.56 moles occupies 348.5 L
6) Given that 1 mole occupies 22.4 L
45 moles occupies 1008 L
7) Number of moles of Fe = 9.2 g/56 = 0.16 moles
Given that 1 mole occupies 22.4 L
0.16 moles occupies 3.6 L
8) 6.02 * 10^23 particles have a mass of 102 g
2.8 x 10^26 particles have a mass of 4.7 * 10^4 g
9) Given that 1 mole occupies 22.4 L
5 moles of the acid occupies 112 L
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Please Help! Chemistry question
Answer:
i think ur right
Explanation:
propose a synthetic route to convert 3-methyl-2-butanol into 3-methyl-1-butanol
To convert 3-methyl-2-butanol into 3-methyl-1-butanol, we can use an oxidation-reduction reaction. First, we will oxidize the alcohol group on the second carbon of 3-methyl-2-butanol to a ketone using a mild oxidizing agent such as chromic acid. The resulting compound will be 3-methyl-2-butanone.
Next, we will reduce the ketone on the second carbon of 3-methyl-2-butanone to an alcohol using a reducing agent such as sodium borohydride or lithium aluminum hydride. The final product will be 3-methyl-1-butanol, with the alcohol group now located on the first carbon.
Overall, the synthetic route to convert 3-methyl-2-butanol to 3-methyl-1-butanol is as follows:
3-methyl-2-butanol → 3-methyl-2-butanone (oxidation using chromic acid) → 3-methyl-1-butanol (reduction using NaBH4 or LiAlH4)
To convert 3-methyl-2-butanol into 3-methyl-1-butanol, you can follow this synthetic route:
1. First, perform an acid-catalyzed dehydration of 3-methyl-2-butanol to form a double bond, creating 3-methyl-2-butene.
2. Next, perform hydroboration-oxidation on 3-methyl-2-butene. Use borane (BH3) as the boron source and hydrogen peroxide (H2O2) as the oxidizing agent. This will add a hydroxyl group across the double bond, forming 3-methyl-1-butanol as the final product.
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How many mls of solvent are required to make a 48% solution from 25 g of solute? (round to the nearest tenth with no units!)
To make a 48% solution from 25 g of solute, you would need approximately 52.08 mL of solvent.
To calculate the volume of solvent required, we need to consider the mass percent of the solution. The mass percent is defined as the ratio of the mass of solute to the total mass of the solution, multiplied by 100. In this case, the mass percent is given as 48%.
To find the volume of solvent, we can set up a proportion using the mass percent. Let's assume the total volume of the solution is V mL. We can set up the following equation:
(25 g)/(V mL) = (48 g)/(100 mL)
Cross-multiplying and solving for V, we get:
25V = 48 * 100
V = (48 * 100)/25
V ≈ 192 mL
Therefore, you would need approximately 192 mL of the solvent to make a 48% solution from 25 g of solute.
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50 g of liquid water is frozen in an ice cube tray. What is the total weight of all of the ice cubes
Which of the following bond has the highes yield?
Baa2
BBB
Baa3
Baa1
Among the bond ratings provided, Baa1 has the highest yield. The bond ratings provided are based on the creditworthiness and risk associated with the issuer.
Generally, higher-yielding bonds indicate higher risk, which is reflected in lower credit ratings. Baa2, Baa3, and BBB all have lower credit ratings compared to Baa1, indicating a higher level of risk and, therefore, potentially higher yields. Key Learnings. Junk bonds, often known as high-yield bonds, are corporate financial securities that provide interest rates above those of investment-grade bonds. Low credit ratings, such as below BBB- from Standard & Poor's and Fitch or below Baa3 from Moody's, are typical of high-yield bonds.
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Which process releases the most energy?
Answer:
Below:
Explanation:
Nuclear fusion The first stages of respiration occur in the cytoplasm but most of the energy released is in the mitochondria (the powerhouse of the cell).
Hope it helps...
It's Ms-Muska
pls help me answer this!
Answer:
neutrons is metal.......
How many kJ of heat would be released when 250g of water freezes?
A. 565 kJ
B. -83.5 kJ
C. 83.5 kJ
D. -565 kJ
The total KJ of heat that would be released is B. -83.5 kJ
How do we solve for the KJ of heat that would be released?When a something in a liquid or semi-liquid freezes, it undergoes a phase change to a solid state, and this process involves a release of heat.
For example, when water freezes, it releases 333.5 kJ of heat per kg of water that freezes
To be able to calculate the heat released, we need to use the formula:
q = m x Lf
But first, we must convert grams to kg
m = 250 g x (1 kg / 1000 g) = 0.25 kg
q = 0.25 kg x 333.5 kJ/kg
q = 83.375 kJ
The answer is turned to the negative since heat is released.
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Consider two polluting factories that emit SO2, a pollutant that causes breathing problems and acid rain. Assume the marginal damage associated with asthma attacks and destruction of vegetation caused by SO2 is constant at $100/ton. Factory A is not efficient at reducing pollution. Its marginal cost curve to reduce pollution is given by MCA= 10*Q, where Q represents tons of SO2 not emitted. Factory B is more efficient. Its marginal cost curve is given by MCB= 5Q – 20.
3a. On the same graph of the market for pollution reduction, draw 1) the marginal damage curve and 2) the marginal cost curve for each factory.
3b. Suppose the government implements a Pigouvian tax t= MD= $100. By how many tons will Factory A reduce pollution? By how many tons will Factory B reduce pollution? What will be the total level of pollution reduction in the market? What will be the cost of pollution reduction for each factory? (Hint: Area of a triangle= 0.5*b*h). Describe why this level of pollution reduction maximizes efficiency.
3c. Take the total level of pollution reduction you found in 3b. Call this efficient level of pollution reduction Q*. Assume, instead of a Pigouvian tax, the government wants to implement Q* through quantity regulation. It mandates each factory reduce pollution by Q*/2. What will be the cost of pollution reduction to each factory? What is the total cost of pollution reduction?
3d. Now, suppose instead of mandating each factory reduce pollution by Q*/2, it issues Q*/2 permits to each factory and allows the factories to buy and sell permits between them. Which factory will sell permits? How many permits will be sold? What will the price of a permit be? What is the cost of pollution reduction for each factory after permits are traded? What is the total cost of pollution reduction?
This level of pollution reduction maximizes efficiency as it balances the marginal costs of reducing pollution with the marginal damages caused by pollution.
(a) On a graph, the marginal damage curve will be a horizontal line at $100/ton, indicating a constant marginal damage associated with SO2 pollution. Factory A's marginal cost curve, MCA = 10Q, will be a straight line with a positive slope, and Factory B's marginal cost curve, MCB = 5Q - 20, will also be a straight line but with a steeper slope.
(b) With a Pigouvian tax of $100, Factory A will reduce pollution by 10 tons (equating MCA to the tax rate: 10Q = $100), and Factory B will reduce pollution by 20 tons (equating MCB to the tax rate: 5Q - 20 = $100). The total level of pollution reduction in the market will be 30 tons. The cost of pollution reduction for Factory A is calculated by finding the area of the triangle formed between the tax line and MCA curve, which amounts to $500. Similarly, the cost of pollution reduction for Factory B is calculated as the area of the triangle between the tax line and MCB curve, which amounts to $800. This level of pollution reduction maximizes efficiency as the marginal costs of reducing pollution are equal to the marginal damages caused by pollution.
(c) If the government mandates each factory to reduce pollution by Q*/2 (half of the efficient level of pollution reduction), Factory A will reduce pollution by 15 tons (Q*/2) at a cost of $750, and Factory B will reduce pollution by 10 tons (Q*/2) at a cost of $400. The total cost of pollution reduction in this case is $1,150.
(d) If the government issues Q*/2 permits to each factory, Factory A will sell permits since its marginal cost of reducing pollution (MCA) is lower than the market price of permits. The number of permits sold will depend on the demand in the market. The price of a permit will be determined by the equilibrium between the supply and demand of permits. After permits are traded, the cost of pollution reduction for each factory will change based on the permits bought or sold. The total cost of pollution reduction will be determined by the transaction costs and the market price of permits.
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Which of the following involves a chemical change?
A. Combining baking soda and vinegar.
B. Combining salt and water.
C. Sweetening iced tea.
D. Tossing a salad.
Answer:
A.
Explanation:
hehe plss give me a heart
Answer:
A
Explanation:
no explanation. just choose answer A