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Related Questions
A hypothesis is made at
the conclusion of all research
the conclusion of an experlment
some point during an experiment
after gathering initial data and defining the research
Answers
Answer:
a hypothesis is an assumption before further investigation (a guess)
Explanation:
hello hello I hope this helps LOL have a nice dayyyyy
Answer:
after gathering initial data and defining the research
Explanation:
"Hypothesis" refers to the researcher's scientific guess or prediction about the outcome of a research. Such expectation is being done after gathering initial data and defining the research, which means it happens before even conducting the study.
Under hypothesis, the variables' relationships are being predicted but with no evidence yet. It is very important to make a hypothesis according to three criteria: specificity and clearness, testability and falsifiability.
A scuba diver is using scuba gear to breathe under water. The pressure on her lungs is 2.5 atm and her lung volume is 4.4 L. What will happen to the volume of her lungs when the pressure increases to 4.5 atm?
Answers
Answer:
2.44 LExplanation:
The volume can be used by using the formula for Boyle's law which is
\(P_1V_1 = P_2V_2 \\ \)
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the final volume
\(V_2 = \frac{P_1V_1}{P_2} \\\)
We have
\(V_2 = \frac{2.5 \times 4.4}{4.5} = \frac{11}{4.5} \\ = 2.444444....\)
We have the final answer as
2.44 LHope this helps you
A photon has an energy of 2.88×10^-18 J . Convert energy into eV.
Answers
A photon has an energy of 2.88 × 10⁻¹⁸ J. The energy into eV is 17.97 eV.
What is Photon Energy ?The energy which is carried by a single photon is called Photon energy.
It is expressed as:
E = hf
where,
E = Photon energy
h = Planck's energy
f = Wave frequency
How to convert Joules (J) into Electron volt (eV) ?To convert J into eV
E(eV) = E(J) × 6.241509 × 10¹⁸
= 2.88 × 10⁻¹⁸ × 6.241509 × 10¹⁸
= 17.97 eV
Thus from the above conclusion we can say that A photon has an energy of 2.88 × 10⁻¹⁸ J. The energy into eV is 17.97 eV.
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C3H8 + 3O2 → 3CO2 + 4H2
How many moles of oxygen are necessary to react completely with 4.0 moles of propane (C3H8)?
Answers
Answer:12
Explanation:
A mixture of calcium chloride and calcium trioxocarbonate(IV) In water can be separated by which separating technique
Answers
Answer:
Filtration
Explanation:
materials generally become warmer when light is reflected by them. absorbed by them. transmitted by them. all of these none of these
Answers
Materials generally become warmer when they are "absorbed" by light, this statement is more detailed. So, the correct answer is "absorbed by them."
Explanation: When a material absorbs light, it receives energy from the light, which leads to an increase in temperature. When light is absorbed by a material, the energy of the light is transformed into internal energy in the material. The temperature of a material can increase as a result of this energy absorption.
This is due to the fact that the increased internal energy of the molecules in the material causes them to vibrate more quickly and hence results in a temperature rise.
The light reflects or transmits when it passes through the material. When light reflects off a surface, it bounces back in the opposite direction. Transmitted light travels through a material without being absorbed by it.
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The process that converts straight-chain alkanes into branched hydrocarbons is called A hydrolysis B.cracking C. hydrogenation D. reforming
Answers
The process that converts straight-chain alkanes into branched hydrocarbons is called: B. cracking.
The process that converts straight-chain alkanes into branched hydrocarbons is called option B: cracking. Cracking is a chemical process widely used in the petroleum industry to break down larger hydrocarbon molecules into smaller ones. It involves the thermal decomposition of hydrocarbons under high temperatures and pressures, often in the presence of a catalyst.
During cracking, long-chain alkanes are subjected to heat and pressure, causing the carbon-carbon bonds to break. This results in the formation of shorter hydrocarbon chains, including branched hydrocarbons. The process can occur in various forms, such as thermal cracking, catalytic cracking, or hydrocracking, depending on the specific conditions and desired products.
By converting straight-chain alkanes into branched hydrocarbons, cracking enhances the volatility, stability, and reactivity of the resulting hydrocarbon products. It is an essential process in the production of gasoline, diesel fuel, and other valuable hydrocarbon derivatives, as branched hydrocarbons often exhibit improved combustion characteristics and higher octane ratings.
Overall, cracking plays a vital role in the petroleum refining industry, enabling the transformation of long-chain alkanes into a more diverse range of hydrocarbon products with desired properties and applications.
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Draw the major organic product of each reaction. Assume a one-to-one ratio of reagents and benzene.For the functional groups added, be sure to draw out all bonds, lone pairs, and formal charges. (Note: the short-cut for NO2 will not be accepted for this question) Did you draw just one compound in each box? Does the organic product contain all bonds, lone pairs and nonzero formal charges? Which electrophile is formed in each route?
Answers
Secondary amine is what it is. Option (B3-dimethylbutan-2-amine )'s is the primary organic product created during the following reaction. Thus, if more hydrogen is added to carbon, we will obtain the main product, according to the Markovnikov Rule.
As a result, the main product produced by adding hydrogen to carbon-1, which has a higher concentration of hydrogen, and adding bromine to carbon-2 is 2-bromopropane. When a reaction follows Markovnikov's rule, a chemical or product is said to be a major organic product. The tertiary alkyl iodide is the largest byproduct of the second process, which transforms alcohol into alkyl iodide, while the secondary alkyl iodide is the minor byproduct.
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When two balls collide, the momentum of the balls after the collision is explained by?
Answers
Answer:
(m1+m2)v
Explanation:
where m1 is the mass of the first body
m2 is the mass of the second body
v is the velocity
understand polarity and how it impacts bonding between water molecules in the liquid and solid.
T/F
Answers
True. Polarity impacts bonding between water molecules in both liquid and solid states. Polarity arises due to the unequal sharing of electrons between oxygen and hydrogen atoms in a water molecule, leading to partial positive and negative charges.
These charges cause water molecules to form hydrogen bonds, which give water its unique properties in liquid and solid states. Water molecules have a polar covalent bond due to the unequal sharing of electrons between the hydrogen and oxygen atoms. This polarity allows water molecules to form hydrogen bonds with each other. In the liquid state, water molecules are constantly moving and forming and breaking hydrogen bonds with each other. In the solid state, the water molecules are arranged in a crystal lattice structure where each molecule is bonded to four others through hydrogen bonds. This arrangement gives ice a lower density than liquid water and allows it to float. The polarity of water also makes it a good solvent for polar and charged substances.
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in the citric acid cycle, a double bond is introduced into a four-carbon compound containing the ch2-ch2-group, producing fumarate. show a similar reaction that occurs in the oxidation pathway
Answers
In the oxidation pathway, a similar reaction occurs in the β-oxidation of fatty acids. The double bond is introduced into a four-carbon compound with a CH₂-CH₂ group, producing trans-Δ²-enoyl-CoA.
This reaction involves the removal of two carbons through a series of enzymatic steps, leading to the formation of a double bond at the β-carbon position. In the β-oxidation of fatty acids, the fatty acid molecule is broken down in the mitochondrial matrix. The process involves four steps: oxidation, hydration, oxidation, and thiolysis. During the second oxidation step, a double bond is introduced into a four-carbon compound with a CH₂-CH₂ group, resulting in the formation of trans-Δ²-enoyl-CoA. This compound then undergoes further oxidation and cleavage, leading to the release of acetyl-CoA and the generation of NADH and FADH₂, which participate in the electron transport chain for ATP production. Overall, β-oxidation plays a crucial role in the energy metabolism of fatty acids.
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What is the major product of 2-methyl-2-pentene with HBr?
Answers
The major product of the reaction between 2-methyl-2-pentene and HBr is 2-bromo-2-methylpentane. When we have an unsymmetrical alkene, hydrogen it reacts with HBr to give two possible products depending on the regioselectivity of the reaction.
There are two possible pathways for the reaction to occur: Markovnikov addition, in which the hydrogen attaches to the carbon that has the highest number of hydrogen atoms and the halogen attaches to the carbon that has the lowest number of hydrogen atoms. Non-Markovnikov addition, in which the halogen attaches to the carbon that has the highest number of hydrogen atoms and the hydrogen attaches to the carbon that has the lowest number of hydrogen atoms.2-Methyl-2-pentene is an example of an unsymmetrical alkene, and it can react with HBr via both Markovnikov and non-Markovnikov pathways. The Markovnikov addition product, 2-bromo-3-methylpentane, can be formed as a minor product. However, the major product is 2-bromo-2-methylpentane, which is the non-Markovnikov addition product. The reason for this is that the reaction occurs through a radical mechanism. In the first step, the H-Br bond is cleaved heterolytically to produce a hydrogen atom and a bromide ion. In the second step, the hydrogen atom adds to the carbon that has the lowest number of hydrogen atoms to form a primary radical, and the bromide ion adds to the carbon that has the highest number of hydrogen atoms to form a tertiary radical. Finally, the two radicals combine to form the product.
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Draw the structure of the addition polymer made from styrene monomers
(show at least three repeating units in your structure).
Answers
Polystyrene is produced from by addition polymerization for styrene monomers as shown in the image attached to this answer.
What is a polymer?A polymer is a substance that is formed by the joining together of several smaller molecules. We know that polymers are composed of smaller molecules called the monomers. The monomers are the singe units that could be joined together when we are trying to obtain a polymer. Monomers could have a very short chain in themselves. The chemical composition of the monomer is what determines the sort of polymer that it could form.
We can see in the image attached, both the structure of the styrene monomer and that of the polystyrene polymer. Thee polymer if formed by addition and occurs by the mechanism of free radical polymerization. This means that the initiator of the polymerization must be a free radical.
Polystyrene is used in materials such as disposable cutlery , compact disk plates and plastic frames.
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molecules of a liquid can pass into the vapor phase only if the question 17 options: a) temperature of the liquid is near its boiling point. b) molecules have sufficient kinetic energy to overcome the intermolecular forces in the liquid. c) liquid has little surface tension. d) vapor pressure of the liquid is high.
Answers
Molecules have sufficient kinetic energy to overcome the intermolecular forces in the liquid. So option B is correct.
Molecules of a liquid can pass into the vapor phase provided that the molecules have adequate kinetic energy to beat the intermolecular powers in the fluid.
This happens when the temperature of the fluid is close to its edge of boiling point, and the vapor tension of the fluid is high. The surface pressure of the fluid affects the vaporization cycle.
So, the correct option is b) "molecules have sufficient kinetic energy to overcome the intermolecular forces in the liquid."
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A solution of NaCl was prepared in the following manner: 0.0842 g of NaCl is massed out on an analytical balance. The solid is transferred to a 25.00 mL volumetric flask. Deionized water is added to the flask such that the bottom of the meniscus is at the line. A 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask using a volumetric pipet and diluted to volume. 6. Calculate the concentration of NaCl in the resulting solution in mg/L NaCl. (answer = 67.4 mg/L) 7. Calculate the concentration of NaCl in the resulting solution using propagation of error through the calculation. Use the manufacturer's tolerance values as the absolute error. The tolerances can be found in Chapter 2 of the Harris text. Assume a Class 1 balance and Class A glassware. Treat the tolerances as random error. (answer = 67.4+0.4 mg/L) 8. Identify 2 possible sources of random (indeterminate) error. Identify 2 possible sourses of systematic (determinate) error.
Answers
Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl
To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7. Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.
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A 0.10 M solution of a weak monoprotic acid has a pH of 3.40 at 25°C. What is the acid-ionizationconstant, Ka, for this acid?A) 1.6 x 10-6B) 4.0 x 10-4C) 3.4 x 10-5D) 1.2 x 10-3E) 1.8 x 10-7
Answers
The acid-ionization constant, Ka, for this acid, is - 1..60 x 10⁻⁶, Option (A) is the correct answer.
According to the question,
A weak monoprotic acid has some dissociation equilibrium. At the beginning (t=0), the concentration of the ions H⁺ and A⁻ is zero (no dissociation) and the concentration of monoprotic acid (HA) is equal to 0.10 M.
HA(aq) ⇄ H⁺(aq) + A⁻(aq)
t=0 0.10 M 0 0
t -x +x +x
eq 0.10 M-x x x
Ka= \(\frac{x^{2} }{0.10 - x}\)
As the pH is 3.40, we calculate the concentration of both H⁺ and A⁻, as follows:
pH= - log (conctration H⁺)= -log x
⇒ x = = 3.98 x 10⁻⁴
Now we calculate Ka from the previous equation:
Ka= \(\frac{( 3. 98 * 10^{-4} )^{2} }{(0.10 - (3.98 * 10^{-4)} }\)
⇒Ka = 1.59 x 10⁻⁶ = 1.60 x 10⁻⁶
So, the acid-ionization constant, Ka, for this acid is - 1..60 x 10⁻⁶.
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In addition to the name of the chemical, and all special warnings, what else must be on the label of all stock solutions prepared in the lab?
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In addition to the name of the chemical and any special warnings, there are several other important pieces of information that should be included on the label of stock solutions prepared in the lab. These include:
1. Concentration: The concentration of the stock solution should be clearly indicated. This can be expressed as molarity (M), percentage (%), or other appropriate units.
2. Date of Preparation: It is important to include the date when the stock solution was prepared. This helps in tracking the age and shelf life of the solution.
3. Storage Conditions: The recommended storage conditions should be provided, such as temperature, light sensitivity, or any other specific requirements to maintain the stability and integrity of the solution.
4. Hazard Symbols or Codes: If the chemical is hazardous, it is important to include the appropriate hazard symbols or codes, such as GHS (Globally Harmonized System) pictograms, to indicate the potential risks associated with the solution.
5. Safety Precautions: Any necessary safety precautions or handling instructions should be clearly stated, including the use of personal protective equipment (PPE), ventilation requirements, and handling procedures.
6. Batch or Lot Number: If applicable, a batch or lot number can be included to help with traceability and quality control.
It is essential to ensure that all information on the label is accurate, up-to-date, and compliant with local regulations and safety standards. Properly labeled stock solutions help to minimize the risks associated with handling and using chemicals in the laboratory.
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6 spills and 100 squares
If each spill represents one year, what is the half-life of the square?
Answers
Answer:
hi
Explanation:
Which of the following is a way that groundwater depletion affects streams? a. Lower water level b. Loss of vegetation c. Wildlife disruption d. All of the above.
Answers
The affect of ground water depletion is Lower water level, Loss of vegetation and Wildlife disruption.
What is ground water?The amount of water that is present below the upper surface area of the land, which are not easily accessible is known as ground water.
And this ground water keeps the soil hydrated and responsible for good vegetation by providing many minerals through water, wildlife is also depends on the ground water as they provide survival for many species. If the ground water is deplected then it also affects the flow of streams and lower water level.
Hence option (d) is correct i.e. All of the above.
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Answer
D. All of the above
Explanation
12. What is the freezing point of a solution made by mixing 56.5 grams of NaCl and 615.0
grams of water? (Kr of water is 1.86 °C/m)
Answers
The freezing point of a solution made by mixing 56.5 grams of NaCl and 615.0 grams of water -5.84 °C.
What is the freezing point depression of the solution?The freezing point depression that occurs in water when mixing 56.5 grams of NaCl and 615.0 grams of water is determined using the freezing point depression formula as given below:
ΔTf = Kf * m * i
where;
ΔTf is the freezing point depression
Kf is a constant
m is the molality of the solution
i = constant
For the given solution;
Kf = 1.86
i = 2 (NaCl produces two ions)
Molality = moles of solute/mass of solvent in kg
Mass of solvent = 615.0 g or 0.615 kg
Moles of NaCl = mass / molar mass
Molar mass of NaCl = 58.5
Mass of NaCl = 56.5
Moles of NaCl = 56.5/58.5
Moles of NaCl = 0.966 moles
Molality = 0.966/0.615
Molality = 1.57 molal
ΔTf = 1.86 * 1.57 * 2
ΔTf = 5.84
The freezing point of solution = 0 - 5.84
The freezing point of solution = -5.84 °C
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According to the graph,
what part(s) of the
reaction are present at
the beginning of the
reaction?
Concentration (M)
Reaction: 2A A₂
A. only the reactant, A
B. only the product, A:
C. Both the reactant (A) and product (A:)
D. You cannot determine from the graph.
Time (sec)
4
Answers
According to the graph, only the reactant A was present at the beginning of the reaction.
What does the graph show?The graph shows the concentration for the reactant A and the product that is A2. In this graph, the concentration is displayed on the vertical axis, while the horizontal axis shows the time.
In general terms, it can be observed that at the beginning only the reactant A is present, but as the reaction occurs the concentration of this reactant decreases, while the concentration of the product A2 increases.
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Annalise observes a streak of light in the sky and says she is seeing a shooting star. What is she most likely observing?
a falling star
an asteroid
a meteor
a dwarf planet
Answers
Answer: A Meteor
Explanation:
A streak of light in the sky and says she is seeing a shooting star. She's most likely observing is a meteor. Therefore, option C is correct.
What is a meteor ?A meteor is an object from space or a meteoroid that touches down on Earth. The air on the space rock creates drag that causes it to become incredibly heated as it falls toward Earth.
When the earth travels through cometary debris during its orbit around the Sun, meteor showers will result. Although the Earth's orbit around the Sun is nearly round, the majority of comets have very elliptical orbits.
A meteoroid becomes a meteor, or a streak of light in the sky, if it gets close enough to Earth and enters its atmosphere. These light striations are sometimes referred to as "shooting stars" due to their appearance. However, stars are not what meteors are.
Thus, option C is correct.
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O.25 moles of SO₂ will contain
A.2.5055*10^23
B.1.5055*10^23
C.3.5055*10^23
D.4.5055*10^23
Answers
Explanation:
number of mole s of H
2
= 0.25 moles
number of molecules = moles * Avogadro’s Number
number of molecules = 0.25×(6.022×10
23
)
number of molecules = 1.505×10
23
single molecule of hydrogen contains two H-atoms. So,
number of atoms = 2×(1.505×10
23
) = 3.01×10
23
when magnesium loses electrons to become an ion, what does it become?
Answers
Answer:
It becomes an a positive ion (cation)
Explanation:
In order to become an ion, atoms should lose or gain electrons.
magnesium is losing 2 electrons which means that the ratio of protons is more than electrons. (proton-positive , electron-negative)
Magnesium has 12 electrons (electronic configuration: 2,8,2) which means it needs to lose 2 electrons. After it loses 2 electrons, there will be 12 protons and 10 electrons and since there is more protons it becomes positively charged.
Making it Mg²⁺
When magnesium loses two electrons, it becomes a magnesium ion with a 2+ charge, often denoted as Mg2+. The magnesium ion has a stable electron configuration and is attracted to negatively charged ions or molecules, such as chloride (Cl-) or oxygen (O2-).
Magnesium (Mg) is a metallic element that belongs to the second group of the periodic table. It is a highly reactive metal and easily loses two electrons to form an ion with a positive charge.
Magnesium ions are essential for many biological processes, including muscle contraction, nerve function, and the synthesis of DNA and RNA. They are also used in various industrial applications, such as the production of aluminum alloys and the purification of molten iron.
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Classify the following as acid-base reactions or oxidation-reduction reactions: (a) Na2S(aq)+2HCl(aq)⟶2NaCl(aq)+H2S(g) (b) 2Na(s)+2HCl(aq)⟶2NaCl(aq)+H2(g) (c) Mg(s)+Cl2(g)⟶MgCl2(s) (d) MgO(s)+2HCl(aq)⟶MgCl2(aq)+H2O(l) (e) K3P(s)+2O2(g)⟶K3PO4(s) (f) 3KOH(aq)+H3PO4(aq)⟶K3PO4(aq)+3H2O(l)
Answers
Answer a
acid-base
Answer b
oxidation-reduction: Na is oxidized, H+ is reduced
Answer c
oxidation-reduction: Mg is oxidized, Cl2 is reduced
Answer d
acid-base
Answer e
oxidation-reduction: P3− is oxidized, O2 is reduced
Answer f
acid-base
1. Consider a radio wave with a frequency of 95 x 106 s1. What is the wavelength, in meters of this wave? Your answer should have 2 significant figures.
2. What is the molarity of a solution that results from dissolving 0.44 mol of KBr in 1.12 liters
Answers
Answer:
a) 3.16 m
b) 0.39 M
Explanation:
a)
The wavelength of a radio wave with a frequency of 95 x 10^6 Hz can be calculated using the formula:
wavelength = speed of light / frequency
The speed of light is approximately 3 x 10^8 m/s. Substituting the given values:
wavelength = (3 x 10^8 m/s) / (95 x 10^6 Hz)
wavelength ≈ 3.16 m (rounded to 2 significant figures)
Therefore, the wavelength of the radio wave is approximately 3.16 meters.
b)
The molarity (M) of a solution can be calculated using the formula:
Molarity = moles of solute / liters of solution
Substituting the given values:
Molarity = 0.44 mol / 1.12 L
Molarity ≈ 0.39 M (rounded to 2 significant figures)
Therefore, the molarity of the solution is approximately 0.39 M.
A balloon contains a 10% glucose solution. The balloon is permeable to water but not to glucose. A beaker contains a 5% glucose solution. What will happen when the balloon is submerged in the beaker
Answers
The state of the balloon:
When the balloon is submerged in the beaker, the amount of water in the beaker will get reduced.
What is Osmosis:
Based on the concentration of solutes on both sides of the membrane, water will flow through a permeable membrane in a specific direction.
Hypertonic solution:
It means that there are more solutes present in the surrounding environment than in the cell itself.
Hypotonic solution:
In a hypotonic solution, the concentration of solutes inside the cell is higher than that outside the cell.
When comparing two solutions, the one with the larger solute concentration is hypertonic, and the one with the lower solute concentration is hypotonic. Isotonic solutions have an identical solute concentration.While the solution in the beaker is hypertonic, Meaning that will draw water molecules out of the cell. As water molecules move from a location of high water potential (dilute solution) to a region of reduced water potential (10% glucose solution), the water from the 5% glucose solution will flow into the 10% one (concentrated solution)This is the reason why the amount of water decreases when the balloon is submerged in the beaker.Learn more about the glucose solution and permeability here,
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How many dots would be drawn for the Lewis Dot Structure of gallium?
Answers
Answer:
To draw a Lewis dot structure for an atom, you must know how many valence electrons an atom possesses. The periodic table organizes the elements based on the similarity of their chemical properties.
Explanation:
MES (2-(N-Morpholino)ethanesulfonic acid) is a common buffer used in biochemistry labs to stabilize proteins. The pKa for MES is 6.09.
a. What is the pH of 1 liter of a 200 mM MES aqueous solution? Clue: you will need to solve a quadratic equation.
b. How much solid NaOH (in grams) needs to be added to the MES solution to make a buffer at pH 6.5?
Answers
Answer: a) The pH of the MES buffer prepared using 0.3616 g NaOH is 6.5. b) 0.3616 g NaOH is required to be added to the MES solution to make a buffer at pH 6.5
pH of 1 liter of a 200 mM MES aqueous solution can be obtained as follows: Let x be the quantity of NaOH in grams needed to be added to the MES solution to create a buffer at pH 6.5.The volume of the solution (assuming a density of 1 g/mL) can be determined as follows :
To prepare 1 L of the buffer, the total quantity of NaOH required will be:The final concentration of MES in the buffer can be calculated as follows:To calculate the pH of the buffer, we can make use of the Henderson-Hasselbalch equation. Hence, the pH of the MES buffer prepared using 0.3616 g NaOH is 6.5.
The mass of NaOH that needs to be added to prepare the MES buffer at pH 6.5 can be calculated as follows:To prepare a buffer with a pH of 6.5, 0.3616 g NaOH is required.
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What keeps mountains from being even taller than they
already are?
Answers
Answer:
Three main processes control mountain height: lateral support of mountains from tectonic forces, which stops mountains from collapsing under their own weight or pushes them up against gravity; climate-controlled erosion; and isostasy, which keeps mountains afloat on the hot and soft mantle material.
Explanation: