calculate the percent ionization in a 0.56 m aqueous solution of phenol (c6h5oh), if the ph is 5.07 at 25°c (ka = 1.3 x 10−10).
Answers
Phenol has the chemical formula C6H5OH. It is a weak acid and when dissolved in water it undergoes an ionization reaction as shown below C6H5OH(aq) + H2O(l) ⇌ H3O+(aq) + C6H5O-(aq).
K a = \[\frac{[H_3O^+][C_6H_5O^-]}{[C_6H_5OH]}\]The Ka for phenol is given as 1.3 × 10−10.Let x be the degree of dissociation of phenol.The initial concentration of phenol is 0.56 M.The concentration of the undissociated phenol is (0.56 - x) M.The concentrations of the H3O+ and C6H5O− ions are each x M. Applying the weak acid equilibrium reaction and Ka expression, we have;Ka = \[\frac{[H_3O^+][C_6H_5O^-]}{[C_6H_5OH]}\]1.3 × 10−10 = \[\frac{x^2}{0.56 - x}\]Since x is very small compared to 0.56,
We can safely assume that 0.56 - x ≈ 0.56.So, 1.3 × 10−10 = x2/0.56x = √(1.3 × 10−10 × 0.56)x = 1.129 × 10−6The percent ionization of phenol is given by;Percent ionization = \[\frac{x}{[C_6H_5OH]}\]Percent ionization = \[\frac{1.129 \times 10^{-6}}{0.56} \times 100\% = 0.000202 \times 100\% = 0.0202\%\]Therefore, the percent ionization of phenol in a 0.56 m aqueous solution is 0.0202%.
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Related Questions
What happens when a wave hits an object?
the wave is reflected
the wave continues on
the wave is interfered with
the wave stops
Answers
Answer:
the wave is reflected. it starts heading towards the other direction
Explanation:
When elodea leaves were placed in 10% nacl, what was the result?.
Answers
When Elodea leaves were placed in a 10% NaCl solution, the result was plasmolysis.
Plasmolysis is the process where plant cells lose water in a hypertonic solution, like 10% NaCl, causing the cell membrane to shrink away from the cell wall. In this case, Elodea leaves' cells lost water to the surrounding salt solution due to osmosis, leading to the collapse of the cells.
The placement of Elodea leaves in a 10% NaCl solution resulted in plasmolysis, negatively affecting the cells within the leaves.
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When elodea leaves were placed in 10% NaCl solution, the cells of the leaves shrunk due to osmosis.
Explanation:When elodea leaves were placed in 10% NaCl solution, the result was osmosis and cell shrinkage.
Elodea leaves are plant cells, and in a hypertonic solution like 10% NaCl, water moves out of the cells to balance the concentration of solutes outside the cell. This causes the cells to shrink due to the loss of water.
This experiment demonstrates the process of osmosis, the movement of water across a selectively permeable membrane, and the effect of different concentrations of solutes on cell behavior.
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A concentration cell is constructed using two NI electrodes with Ni2 concentration of 1. 0 m and 1. 0 x 10^-4 m in the two half-cells. Calculate the potential of the cell if the reaction is spontaneous
Answers
The potential of the concentration cell is 0.1182 V when the reaction is spontaneous.
What is Concentration Cell?An electrolytic cell that contains two half cells with the same electrodes but with different concentrations is known as a concentration cell.
What is Nernst Equation?Nernst Equation helps in determining the cell potential under the non-standard conditions that are at any known temperature, pressure, and concentration. It is given by
\(E = E^o - \frac{2.303RT}{F} log Q\)
At T = 298 K,
\(E = E^o - \frac{0.0591}{n} logQ\)
For Ni concentration cell, anode and cathode are the same and thus E° is zero
At anode,
\(Ni (s)\rightarrow Ni^2^+ + 2e^-\)
At Cathode,
\(Ni^2^+ + 2e^-\rightarrow Ni (s)\)
No of moles of electrons, n = 2
Then, the potential of the cell is given by
\(E=- \frac{0.0591}{n} logQ\)
\(Q = \frac{[diluted Ni]}{[concentrated Ni]}\)
diluted Ni = 1 x 10⁻⁴ M and concentrated Ni = 1 M
\(E = \frac{-0.059}{2} log\frac{ 10^-^4}{1}\\ = \frac{-0.059}{2} \times -4 log10\)
log(10) = 1
E = 0.1182 V
Hence, the potential of the cell is 0.1182 V.
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What are the correct coefficients when this chemical equation is
balanced? *
P4 + 02 P2O5
Answers
Answer:
What are the correct coefficients when this chemical equation is
balanced? *
P4 + 02 P2O5
1, 5, 2Explanation:
For this reaction we have a combination reaction. Balancing Strategies: This combination reaction is a lot easier to balance and if you can get an even number of oxygen atoms on the reactants side of the equation.
1. Approximately how much calcium would you ingest by drinking eight 8-oz glasses of your local water. 1 oz=29.57mL
2. Assume an average minimum daily requirement for calcium is 1150 mg. Calculate what percentage of your daily requirements could be met by drinking 1.0L of your local water.
**In my calculation I have determined that the concentration of Ca ions in my water is .0022mol/L and my water hardness is 221 ppm CaCo3
Answers
The amount of calcium ingested by drinking eight 8-oz glasses of local water is 0.0041655 mol. By drinking 1.0L of local water, approximately 166.85 mg of calcium is ingested, which is 14.5% of the daily requirement of calcium.
1. To calculate the amount of calcium ingested by drinking eight 8-oz glasses of local water, we need to know the volume of water and the concentration of calcium ions present in it.1 oz = 29.57mL
So, eight 8-oz glasses of water = 8 x 8 oz = 64 oz= 64 x 29.57 mL = 1892.48 mL1 L = 1000 mL
Therefore, the volume of water in liters = 1892.48/1000 = 1.8925 L
Concentration of Ca ions in water = 0.0022 mol/L
So, the amount of calcium ingested = concentration of calcium x volume of water= 0.0022 mol/L x 1.8925 L= 0.0041655 mol of calcium
2. To calculate the percentage of the daily requirement of calcium met by drinking 1.0L of local water, we need to convert the amount of calcium in moles to milligrams (mg). The molar mass of calcium is 40.08 g/mol.0.0041655 mol of calcium weighs = 0.0041655 mol x 40.08 g/mol = 0.16685464 g or 166.85 mg
The percentage of the daily requirement of calcium met by drinking 1.0L of local water is given by the formula:
Percentage of daily requirement met = (amount of calcium in water/daily requirement of calcium) x 100%Daily requirement of calcium = 1150 mg
Percentage of daily requirement met = (166.85 mg/1150 mg) x 100%≈ 14.5 %
Therefore, by drinking 1.0L of local water, approximately 166.85 mg of calcium is ingested, which is 14.5% of the daily requirement of calcium.
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1. Describe four ways in which enthalpy changes for a reaction may be represented.
2. Use the four methods to represent the dissolving of sodium chloride (Delta H sol = 3.9 kJ/mol).
Answers
We can apply the formula q=nH fusion, where q is the reaction's entire amount of energy! The conventional molar enthalpy of reaction is an additional option.
Enthalpy: What is it and how is it represented?Enthalpy Meaning. The following describes enthalpy: H = E + PV. The internal energy, stress, & volume are combined to produce the enthalpy.. A system's enthalpy cannot be measured, but enthalpy changes can be observed.
How do you calculate an experiment's enthalpy change?
Normally, to perform the calculation, you would only figure out how much heat was produced or absorbed in your specific reaction, and then scale it up to yield an enthalpy change per mole. Chapter 5 of my book on chemistry calculations contains examples of this.
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What is the difference betweeen enthalpy change of solution and enthalpy change of dissolution
Answers
Answer:
The enthalpy change of solution refers to the amount of heat that is released or absorbed during the dissolving process (at constant pressure). This enthalpy of solution ( ΔHsolution ) can either be positive (endothermic) or negative (exothermic).
WHILE The enthalpy of dissolution (ΔH) is the heat released or absorbed when a specified amount of a solute dissolves in a certain quantity of solvent at constant PRESSURE.
Enthalpy Change of Solution and Enthalpy change of dissolution can be said to be similar.Aqueous sodium hydroxide reacts with carbon dioxide gas to yield soluble sodium carbonate and liquid
water. What is the chemical equation?
Answers
Explanation:
i have done
see the picture
and please mark me brainiest
Calcium has the symbol Ca and its ions have a charge of +2. Chlorine has the symbol Cl and its ions have a charge of -1. In the ionic compound calcium chloride, how many chloride ions are there for each calcium ion?
Answers
Answer:
There are two chloride ions for each calcium ion
Explanation:
The compound has to have an overall neutral charge. Meaning that the positive charges from calcium have to be canceled out by the negative charges of chlorine.
If there are two chloride ions for each calcium ion, the charges would cancel themselves out (2 * -1 would cancel out with +2).
In the Ricardian model, comparative advantage is likely to be due to Group of answer choices home product taste bias. scale economies. labor productivity differences. political pressure. greater capital availability per worker.
Answers
Labor productivity differences are the reason of comparative advantage in the Ricardian model.
In the Ricardian model, comparative advantage is likely to be due to labor productivity differences. This means that a country can specialize in producing goods and services that they are more productive in, and then trade with other countries that specialize in other goods and services. This leads to greater efficiency and economic growth for all countries involved. Other factors such as home product taste bias, scale economies, political pressure, and greater capital availability per worker may also play a role, but they are not the main determinant of comparative advantage in the Ricardian model.
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what percentage of the total grams of carbohydrate in the cookie are sugars? what percentage of the total grams of carbohydrate in the cookie are sugars? 6% 10% 36% 55%
Answers
It depends on the specific cookie that you are referring to, as the percentage of total grams of carbohydrate that are sugars can vary from cookie to cookie.
The information you provided (6%, 10%, 36%, 55%) does not give enough information to determine the exact percentage of total grams of carbohydrate in the cookie that are sugars. To determine the exact percentage, you would need to consult the nutrition label or ingredient list for the specific cookie in question. The total grams of carbohydrate in a food item refers to the total amount of carbohydrates that are present in that food item. This can include various types of carbohydrates, such as sugars, starches, and fibers. The percentage of total grams of carbohydrate that are sugars specifically refers to the percentage of the total carbohydrates in the food item that are comprised of simple or complex sugars. In order to determine the exact percentage of total grams of carbohydrate in a cookie that are sugars, you would need to consult the nutrition label or ingredient list for that specific cookie. The nutrition label will typically provide information on the total grams of carbohydrate per serving, as well as the grams of sugar per serving. By dividing the grams of sugar by the total grams of carbohydrate, you can determine the percentage of total grams of carbohydrate that are sugars.
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most abn molecules can be derived from what number of basic geometric shapes?
Answers
Most ABn molecules can be derived from five basic geometric shapes.
These shapes are linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.
Each shape corresponds to a specific arrangement of the central atom (A) and its surrounding atoms (Bn), giving the molecules their unique molecular geometric shape.
The linear shape is when the central atom has two surrounding atoms arranged in a straight line with a bond angle of 180 degrees. The trigonal planar shape is when the central atom has three surrounding atoms arranged in a flat, triangular plane with a bond angle of 120 degrees. The tetrahedral shape is when the central atom has four surrounding atoms arranged in a tetrahedron with bond angles of approximately 109.5 degrees.The trigonal bipyramidal shape occurs when a central atom is surrounded by five atoms or groups, with three in a flat plane and two above and below the plane. The octahedral shape occurs when a central atom is surrounded by six atoms or groups, with four in a flat plane and two above and below the plane.Learn more about molecules : https://brainly.com/question/475709
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Look at the diagram below, which shows an atom of an element. How many valence electrons does it have? Based on this, would the atom be reactive or unreactive?
Answers
1. The number of valence electrons the atom have is seven (7).
2. The atom is reactive
1. How do i determine the number of valence electron in the atom?
Valence electron is simply defined as the number of electron(s) present in the outermost shell of an atom.
Considering the diagram given from the question, the number of electrons in the outermost shell is seven (7).
Thus, we can conclude that the valence electron the atom have is seven (7)
How do i know if the atom is reactive or not?From the diagram given, we determine that the number of valence electrons present is 7. This means that the atom required 1 more electron to complete its octet configuration.
Thus, the atom will be very reactive in order to quickly attain a stable configuration.
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Which of the following are equal to 32°F?
A. 0°C
B. 273 K
C. 100°C
D. 373 K
Answers
Answer:
A. 0°C............... sorry, the anwser has to be 20 characters long
How do the colors work?
Answers
Explanation:
red, blue, yellow, white, black,
these are the primary colors. when mixed together they create other colors.
30 point. What is formed when a hydroxyl group is substituted for a hydrogen?
Answers
Yeah it’s that
Answer:
alcohol
Explanation:
Which has the larger radius, F or F− ?
A. They have the same radius.
B. F
C. F−
D. It is impossible to tell.
Answers
Answer is B- F has a smaller radius than F− because an additional electron causes greater repulsion in F− is the correct choice and the nuclear charge the radius of the anion increases.
Explanation: I hoped that helped!
The one that have larger radius is F-. The correct option is C.
What is atomic radius?A chemical element's atomic radius is a measurement of the size of its atom, usually the mean or typical distance from the nucleus's center to the outermost isolated electron.
Because a boundary is not a well-defined physical entity, various non-equivalent definitions of atomic radius exist.
As the number of energy levels decreases down a group, the distance between the nucleus and the outermost orbital increases.
As a result, the atomic radius expands. The ionic radius is the distance between the nucleus and the ion's electron cloud's outer edge.
Because they have fewer shells, F and F- are both smaller than the rest. F- now has one more electron than F, causing the radius to increase.
Thus, the correct option is C.
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When 50.0 g of Fe was burned in the presence of excess oxygen, 65.0 g of Fe2O3 (FW =159.7 g/mol) was produced according to the balanced reaction below. What was the percent yeild? 4 Fe (s) + 3 O2 (g) -> 2 FeO3 (s) Answer Choices: 76.9% 90.0% 69.9% 81.4%
Answers
The percent yield in this reaction is approximately 81.4%.
To calculate the percent yield, we need to compare the actual yield (65.0 g of Fe₂O₃) to the theoretical yield, which can be calculated based on the balanced equation and the amount of Fe used.
First, we need to determine the number of moles of Fe used. Given that the molar mass of Fe is 55.8 g/mol, we have:
moles of Fe = mass of Fe / molar mass of Fe
moles of Fe = 50.0 g / 55.8 g/mol
moles of Fe ≈ 0.895 mol
Using the stoichiometry of the balanced equation, we can calculate the theoretical yield of Fe₂O₃:
moles of Fe₂O₃ (theoretical) = (moles of Fe) / 4 * (molar ratio of Fe₂O₃/Fe)
moles of Fe₂O₃ (theoretical) = 0.895 mol / 4 * (2/4)
moles of Fe₂O₃ (theoretical) = 0.4475 mol
Now, we can calculate the theoretical yield in grams:
theoretical yield = moles of Fe₂O₃ (theoretical) * molar mass of Fe₂O₃
theoretical yield = 0.4475 mol * 159.7 g/mol
theoretical yield ≈ 71.4 g
Finally, we can calculate the percent yield:
percent yield = (actual yield / theoretical yield) * 100%
percent yield = (65.0 g / 71.4 g) * 100%
percent yield ≈ 81.4%
Therefore, the percent yield in this reaction is approximately 81.4%, which corresponds to the provided answer choice.
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A sealed piston holds 22.4 L of gas at 2.50 atm, 0.0°C. If the piston is allowed to expand to 44.8 L what is
the final pressure assuming the final temperature is 273°C?
Answers
The final pressure assuming the final temperature is 273°C is 5.00 atm.
To find out the final pressure when a sealed piston holding 22.4L of gas is allowed to expand to 44.8L with a final temperature of 273°C, we will have to apply the combined gas law.
The combined gas law is a gas law that combines Charles's law, Boyle's law, and Gay-Lussac's law. It states that:
\($$\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}$$\)
Where, P₁ is the initial pressure of the gas
V₁ is the initial volume of the gas
T₁ is the initial temperature of the gas
P₂ is the final pressure of the gas
V₂ is the final volume of the gas
T₂ is the final temperature of the gas
We know that:
P₁ = 2.50 atm V₁ = 22.4 L T₁
= 0°C + 273°C = 273 K P₂ = ?
V₂ = 44.8 L T₂
= 273°C + 273°C = 546 K
Substitute the values into the combined gas law equation.
\($$\frac{(2.50\text{ atm})(22.4\text{ L})}{273\text{ K}} = \frac{P_2(44.8\text{ L})}{546\text{ K}}$$Multiply both sides by 546 K to solve for P₂. $$P_2 = \frac{(2.50\text{ atm})(22.4\text{ L})(546\text{ K})}{(273\text{ K})(44.8\text{ L})}$$Simplify. $$P_2 = 5.00\text{ atm}$$.\)
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An all-terrain vehicle drove through a 200-meter mountain trail in 16 seconds. What was its average speed? please explain
Answers
According to the given conditions, the average speed of vehicle is 12.5 meters/second.
What is average speed?The average speed is the total distance traveled by the object in a particular time interval. The average speed is a scalar quantity. It is represented by the magnitude and does not have direction.
The formula for average speed is found by calculating the ratio of the total distance traveled by the body to the time taken to cover that distance.
The average speed equation is articulated as:Total Distance traveled/Total Time taken which on substitution gives 200/1=12.5 meter/seconds.
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is it possible that all element of an ecosystem stay in balance with each other? if yes,what do we call such an ecosystem∵
Answers
When all of the elements of an ecosystem are in harmony with one another, the ecosystem is said to be in equilibrium. whenever an ecosystem undergoes changes.
What makes it an ecosystem?A population of living things (plants, animals, and bacteria) in a specific location is called an ecosystem. Eco refers to a region of the planet, while system refers to the organizing elements.
Are ecosystem and environment the same thing?Environment is the context in which anything happens, whereas ecosystem is the relationship here between environment and social things. The environment is the space in which living things exist. The community where biotic and abiotic factors interact is known as an ecosystem.
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Ca(OH)2 is an Arrhenius ______________ and increases the concentration of __________ when added to water
Answers
What is the volume (in mL) of a 2.00 M solution that contains 10.0 gram of KCl?
Answers
Answer:
0.067L
Explanation:
Molarity of a solution, which refers to the molar concentration of that solution can be calculated thus:
Molarity = number of moles (mol) /volume (L)
According to the information given in this question, V = ?, Molarity = 2.00M, mass of KCl = 10grams.
Using mole = mass/molar mass
Molar Mass of KCl = 39 + 35.5
= 74.5g/mol
Mole = 10/74.5
Mole = 0.134mol
Using Molarity = number of moles (mol) /volume (L)
2 = 0.134/V
Cross multiply
V = 0.134/2
V = 0.067L
what is the maximum amount of flammable liquids that can be stored outside of a rated flammable cabinet in a laboratory?
Answers
The maximum amount of flammable liquids that can be stored outside of a rated flammable cabinet in a laboratory is 25 number of gallons.
To make certain flammable drinks are remoted from incompatible substances, they need to simplest be saved in a flammable cupboard this is used simplest for the garage of Class three Flammable Liquids. Extra care should be taken now no longer to take flammable drinks into regions of the laboratory which are the usage of incompatible substances.
The most quantity of flammable drinks that you could save in a single flammable cupboard is primarily based totally at the chemical's Flash Point and Boiling Point. No extra than 60 gallons of a Category 1, 2 or three flammable liquid or a hundred and twenty gallons of a Category four flammable liquid can be saved in a Flammable Safety Cabinet.No extra than 25 gallons of flammable drinks will be saved in a room outdoor of an permitted garage cupboard.
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The speed limit on a certain highway is 80 kilometers per hour. What is this speed in centimeters per second?
Answers
The speed : 2222.2 cm/s
Further explanationVelocity has magnitude and direction
Can be formulated :
\(\tt \boxed{\bold{v=\dfrac{d}{t}}}\)v= velocity, m/s
d=distance=m
t=time,s
convert from km/h to cm/s :
\(\tt =80\dfrac{km}{h}\times \dfrac{10^5~cm}{1~km}\times \dfrac{1~h}{3600~s}\\\\=2222.2~\dfrac{cm}{s}\)four solutions are made by dissolving a certain amount of each of the four substances in 450. g water. if the freezing point of each aqueous solution is the same, which substance is added to water in the greatest amount, in grams? assume all ionic compounds dissociate 100% to form ions in solution.
Answers
Four solutions are made by dissolving a certain amount of each of the four substances in 450. g water. The substance that is added to water in the greatest amount is the one with the lowest molar mass.
The freezing point is the temperature at which the vapor pressure of a liquid equals the atmospheric pressure exerted on the liquid. This temperature represents the point at which the liquid turns into a solid.
Ionic compounds dissolve in water and dissociate into cations and anions. Therefore, they are able to change the freezing point of the solvent. The freezing point depression can be calculated using the following equation:
ΔT = Kf·m
where ΔT is the freezing point depression, Kf is the freezing point depression constant for the solvent (water in this case), and m is the molality of the solution.
The molality of a solution is defined as the number of moles of solute per kilogram of solvent. The amount of solute that is added to the solution can be calculated using the following formula:
m = n / (m solvent · w solvent)
where m is the molality of the solution, n is the number of moles of solute, m solvent is the molar mass of the solvent, and w solvent is the mass of the solvent in kilograms.
The four solutions have the same freezing point, which means that they have the same molality.
Therefore, the amount of solute that is added to the solution can be calculated using the following formula:
m = n / (m solvent · w solvent)
where m is the molality of the solution, n is the number of moles of solute, m solvent is the molar mass of the solvent, and w solvent is the mass of the solvent in kilograms.
The molality of the solution is the same for all four solutions, so the amount of solute added to the solution is inversely proportional to the molar mass of the solute.
Therefore, the substance that is added to water in the greatest amount is the one with the lowest molar mass.
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A certain first-order reaction has a rate constant of 2. 65×10−2s−1 at 16 ∘C. What is the value of k at 63 ∘C if Ea = 88. 5 kJ/mol ?
Answers
To determine the value of the rate constant (k) at 63 °C given the rate constant (k) at 16 °C and the activation energy (Ea), we can use the Arrhenius equation:
k2 = k1 * exp((Ea/R) * ((1/T2) - (1/T1)))
Where:
k1 = rate constant at temperature T1
k2 = rate constant at temperature T2
Ea = activation energy (in J/mol)
R = gas constant (8.314 J/(mol·K))
T1 = initial temperature (in Kelvin)
T2 = final temperature (in Kelvin)
First, we need to convert the temperatures from Celsius to Kelvin:
T1 = 16 + 273.15 = 289.15 K
T2 = 63 + 273.15 = 336.15 K
Now we can plug in the values into the Arrhenius equation:
k2 = (2.65×10^(-2) s^(-1)) * exp((88.5 * 10^3 J/mol) / (8.314 J/(mol·K)) * ((1/336.15 K) - (1/289.15 K)))
Simplifying the equation and calculating the value of k2 will give you the rate constant at 63 °C.
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Which statement about plant and animal cells is true? A. Plant cells have a nucleus and a cell wall; animal cells do not have either of these structures. B. Plant cells have a cell wall and chloroplasts; animal cells do not have either of these structures. C. Plant cells have a cell wall and a cell membrane; animal cells have a cell wall but not a cell membrane. D. Plant cells have chloroplasts and mitochondria; animal cells have chloroplasts but do not have mitochondria.
Answers
Answer:
B. Plant cells have a cell wall and chloroplasts; animal cells do not have either of these structures.
Explanation:
A major difference between a plant cell and an animal cell is presence of chloroplasts in plant cells. Another key difference between plant and animal cells is the presence of a cell wall in plant cells. Both structures are absent in an animal cells.
The cell wall surrounds the plasma membrane of plant cells. This helps to provide the required tensile strength and protection against mechanical and osmotic stress.
Cell walls also help plants to maintain shape and rigidity.
The plant cell has a cell wall and chloroplast, while the animal cell lacks both of them. Thus, option B is correct.
The cell has been the smallest unit of life that has been performing varying functions with the help of different organelles.
The plant cell has been exposed to harsh environmental conditions, thus has been consisting of the cell wall along with the cell membrane. However, animal cell lacks a cell wall.
The food has been processed in the plant cells with the help of photosynthesis that required chlorophyll. The chlorophyll has been consisted in the chloroplast. Thus plants cell have consisted of chloroplast, however, animal cells lack chlorophyll as well as chloroplasts.
Thus, the plant cell has a cell wall and chloroplast, while the animal cell lacks both of them. Thus, option B is correct.
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3.0 mol Na reacts with 1.4 mol
F2 according to the equation below:
2Na+ F₂ → 2NaF
How many moles of NaF form
from 3.0 mol Na?
Answers
The number of moles of NaF that will be produced from 3moles of Na is 3 moles.
How to calculate number of moles?Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
According to this question, sodium reacts with fluorine as follows:
2Na+ F₂ → 2NaF
Based on the above equation, 2 moles of Na will produce 2 moles of NaF
This means that 3 moles of Na will produce 3 moles of NaF.
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The side of the ladder are made up of alternating ____ and ____ molecules the steps of the ladder are made up of _____ held together by hydrogrn
Answers
The side of the ladder are made up of alternating sugar and phosphate molecules the steps of the ladder are made up of bases held together by hydrogen bonds.
The fundamental unit of DNA is referred to as a nucleotide. One sugar molecule, one phosphate molecule, and one of the four bases make up a nucleotide. DNA's nucleotides align to form two lengthy backbones that resemble a ladder's handrails in the shape of sugar and phosphate molecules. Between the sugar molecules on the two handrails, two bases combine to form the ladder's rungs. The "rungs" between the phosphate molecules are absent. This was significant to Watson and Crick since it enabled them to understand the formation of the double helix.
James Watson and Francis Crick discovered the DNA structure in 1953. A double helix, often known as a twisted ladder, is the structure. Sugar and phosphate molecules alternately make up the sides of the ladder. Hydrogen bonds serve as a flimsy means of holding the two sides of the DNA ladder together.
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